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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q
(Mark One)
☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31, 2024
or
☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from _______ to_______

Commission File Number 001-33166
algtheaderq417a17.jpg
Allegiant Travel Company
(Exact Name of Registrant as Specified in Its Charter)
Nevada20-4745737
(State or Other Jurisdiction of Incorporation or Organization)(IRS Employer Identification No.)
1201 North Town Center Drive
Las Vegas,Nevada89144
(Address of Principal Executive Offices)(Zip Code)
Registrant’s Telephone Number, Including Area Code: (702) 851-7300

Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading SymbolName of each exchange on which registered
Common stock, par value $0.001ALGTNASDAQ Global Select Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):
Large accelerated filer☒Accelerated filer☐
Non-accelerated filer☐Smaller reporting company☐
Emerging growth company☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of April 29, 2024, the registrant had 18,232,284 shares of common stock, $0.001 par value per share, outstanding.


ALLEGIANT TRAVEL COMPANY
FORM 10-Q
TABLE OF CONTENTS
2

PART I. FINANCIAL INFORMATION

Item 1. Consolidated Financial Statements

ALLEGIANT TRAVEL COMPANY
CONSOLIDATED BALANCE SHEETS
(in thousands)
March 31, 2024December 31, 2023
(unaudited)
CURRENT ASSETS 
Cash and cash equivalents$193,414 $143,259 
Restricted cash16,859 16,325 
Short-term investments616,461 671,414 
Accounts receivable72,494 70,743 
Expendable parts, supplies and fuel, net35,806 36,335 
Prepaid expenses and other current assets72,072 63,054 
TOTAL CURRENT ASSETS1,007,106 1,001,130 
Property and equipment, net3,523,343 3,447,111 
Long-term investments43,799 56,004 
Deferred major maintenance, net165,701 165,767 
Operating lease right-of-use assets, net97,046 100,707 
Deposits and other assets98,136 98,691 
TOTAL ASSETS:$4,935,131 $4,869,410 
CURRENT LIABILITIES
Accounts payable69,486 54,484 
Accrued liabilities297,329 305,078 
Current operating lease liabilities21,944 20,873 
Air traffic liability432,561 353,488 
Current loyalty program liability40,182 38,447 
Current maturities of long-term debt and finance lease obligations, net of related costs459,171 439,937 
TOTAL CURRENT LIABILITIES1,320,673 1,212,307 
Long-term debt and finance lease obligations, net of current maturities and related costs1,789,577 1,819,717 
Deferred income taxes384,036 384,602 
Noncurrent operating lease liabilities77,519 82,410 
Noncurrent loyalty program liability31,283 32,366 
Other noncurrent liabilities9,887 9,448 
TOTAL LIABILITIES:$3,612,975 $3,540,850 
SHAREHOLDERS' EQUITY
Common stock, par value $0.001
26 26 
Treasury shares(682,075)(681,932)
Additional paid in capital747,873 741,055 
Accumulated other comprehensive income, net2,783 3,991 
Retained earnings1,253,549 1,265,420 
TOTAL EQUITY:1,322,156 $1,328,560 
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY:$4,935,131 $4,869,410 
 
The accompanying notes are an integral part of these consolidated financial statements.
3

ALLEGIANT TRAVEL COMPANY
CONSOLIDATED STATEMENTS OF INCOME
(in thousands, except per share amounts)
 (unaudited)
 Three Months Ended March 31,
 20242023
OPERATING REVENUES:
Passenger$579,936 $609,277 
Third party products33,399 26,037 
Fixed fee contracts18,861 14,117 
Resort and other24,210 256 
Total operating revenues656,406 649,687 
OPERATING EXPENSES:
Salaries and benefits213,327 159,623 
Aircraft fuel170,087 189,546 
Station operations66,468 61,520 
Depreciation and amortization63,844 54,680 
Sales and marketing30,419 26,928 
Maintenance and repairs30,278 26,442 
Aircraft lease rentals5,985 7,092 
Other47,451 30,643 
Special charges, net of recoveries13,099 (1,612)
Total operating expenses640,958 554,862 
OPERATING INCOME15,448 94,825 
OTHER (INCOME) EXPENSES:
Interest income(12,241)(10,128)
Interest expense40,160 35,708 
Capitalized interest(11,185)(5,180)
Other, net51 7 
Total other expenses16,785 20,407 
INCOME (LOSS) BEFORE INCOME TAXES(1,337)74,418 
INCOME TAX PROVISION (BENEFIT)(418)18,269 
NET INCOME (LOSS)$(919)$56,149 
Earnings (loss) per share to common shareholders:
Basic$(0.07)$3.09 
Diluted$(0.07)$3.09 
Shares used for computation:
Basic17,664 17,766 
Diluted17,664 17,769 
Cash dividends declared per share:$0.60 $— 

The accompanying notes are an integral part of these consolidated financial statements.
4

ALLEGIANT TRAVEL COMPANY
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(in thousands)
(unaudited)
 
 Three Months Ended March 31,
 20242023
NET INCOME (LOSS)$(919)$56,149 
Other comprehensive income:  
Change in available for sale securities, net of tax(1,208)1,985 
TOTAL COMPREHENSIVE INCOME (LOSS)$(2,127)$58,134 

The accompanying notes are an integral part of these consolidated financial statements.
5

ALLEGIANT TRAVEL COMPANY
CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY
(in thousands)
(unaudited)
Three Months Ended March 31, 2024
Common stock outstandingPar valueAdditional paid-in capitalAccumulated other comprehensive incomeRetained earningsTreasury sharesTotal shareholders' equity
Balance at December 31, 202318,269 $26 $741,055 $3,991 $1,265,420 $(681,932)$1,328,560 
Share-based compensation15 — 6,818 — — — 6,818 
Shares repurchased by the Company and held as treasury shares(2)— — — — (143)(143)
Cash dividends, $0.60 per share
— — — — (10,952)— (10,952)
Other comprehensive loss— — — (1,208)— — (1,208)
Net loss— — — — (919)— (919)
Balance at March 31, 202418,282 $26 $747,873 $2,783 $1,253,549 $(682,075)$1,322,156 

Three Months Ended March 31, 2023
Common stock outstandingPar valueAdditional paid-in capitalAccumulated other comprehensive incomeRetained earningsTreasury sharesTotal shareholders' equity
Balance at December 31, 202218,128 $25 $709,471 $1,257 $1,169,968 $(660,023)$1,220,698 
Share-based compensation(5)— 5,035 — — — 5,035 
Shares repurchased by the Company and held as treasury shares(125)— — — — (12,470)(12,470)
Other comprehensive income— — — 1,985 — — 1,985 
Net income— — — — 56,149 — 56,149 
Balance at March 31, 202317,998 $25 $714,506 $3,242 $1,226,117 $(672,493)$1,271,397 

6

ALLEGIANT TRAVEL COMPANY
CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)
(unaudited)
 Three Months Ended March 31,
 20242023
Cash flows from operating activities:
Net income (loss)$(919)$56,149 
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization63,844 54,680 
Special charges, net of recoveries12,858 (1,835)
Other adjustments2,893 1,592 
Changes in certain assets and liabilities:
Air traffic liability79,072 100,071 
Other - net10,057 4,743 
Net cash provided by operating activities167,805 215,400 
Cash flows from investing activities:
Purchase of investment securities (176,119)(251,937)
Proceeds from maturities of investment securities 246,663 288,591 
Aircraft pre-delivery deposits(35,053)(33,516)
Purchase of property and equipment(131,862)(129,883)
Other investing activities2,787 12,506 
Net cash used in investing activities(93,584)(114,239)
Cash flows from financing activities:
Cash dividends paid to shareholders(10,952)— 
Proceeds from the issuance of debt and finance lease obligations18,755 59,516 
Repurchase of common stock(143)(12,470)
Principal payments on debt and finance lease obligations(31,512)(51,492)
Debt issuance costs— (877)
Other financing activities320 (6,554)
Net cash used in financing activities(23,532)(11,877)
NET CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH50,689 89,284 
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD159,584 245,446 
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD$210,273 $334,730 
CASH PAYMENTS FOR:
Interest paid, net of amount capitalized$31,971 $41,645 
Income tax payments32 14 
SUPPLEMENTAL DISCLOSURE OF NONCASH TRANSACTIONS:
Right-of-use (ROU) assets acquired$1,379 $— 
Purchases of property and equipment in accrued liabilities40,935 69,240 

The accompanying notes are an integral part of these consolidated financial statements.
7

ALLEGIANT TRAVEL COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(unaudited)

Note 1 — Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited consolidated financial statements include the accounts of Allegiant Travel Company (the “Company”) and its majority-owned operating subsidiaries. The Company's investments in unconsolidated affiliates, which are 50 percent or less owned, are accounted for under the equity or cost method, and are insignificant to the consolidated financial statements. All intercompany balances and transactions have been eliminated.

These unaudited consolidated financial statements reflect all normal recurring adjustments which management believes are necessary to present fairly the financial position, results of operations, and cash flows of the Company for the respective periods presented. Certain information and footnote disclosures normally included in the annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") have been omitted pursuant to the rules and regulations of the Securities and Exchange Commission for Form 10-Q. These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements of the Company and notes thereto included in the annual report of the Company on Form 10-K for the year ended December 31, 2023 and filed with the Securities and Exchange Commission.

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities, at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from these estimates.

The Company has reclassified certain prior period amounts to conform to the current period presentation.


Note 2 — Special Charges

As a result of Hurricane Ian's direct hit on the southwest coast of Florida on September 28, 2022, the construction site of Sunseeker Resort at Charlotte Harbor (the "Resort" or "Sunseeker Resort") was damaged. There was a subsequent weather-related event and a fire that caused additional damage in fourth quarter 2022. In addition, during third quarter 2023, the Sunseeker Resort construction site sustained additional damages related to Hurricane Idalia. The Company recorded estimated losses in 2022 and 2023 based on its assessment of these damages and the anticipated future restoration cost. The estimated losses were recorded to special charges and are offset by insurance recoveries in the period they are approved. To date, the Company has recorded $78.2 million in losses and $52.5 million in insurance recoveries. The Company has submitted additional insurance claims that remain outstanding at the date of this report.

Due to the heavy maintenance needs on certain aging Airbus airframes and capacity constraints at the maintenance, repair, and overhaul contractors, the Company reevaluated its fleet plan and identified 21 airframes for early retirement to coincide with 737 MAX aircraft deliveries as scheduled under an amendment to the Company's agreement with The Boeing Company signed in September 2023. Two airframes were retired in 2023 and two airframes were retired in first quarter 2024. The remaining airframes are to be retired between May 2024 and September 2025. The accelerated depreciation on these airframes resulting from a change in the estimated useful life is recorded as a special charge.

Special Charges

The table below summarizes special charges recorded during the three months ended March 31, 2024, and 2023.
Three Months Ended March 31,
(in thousands)20242023
Sunseeker weather and related events$100 $200 
Sunseeker weather and related events, insurance recoveries(1)
(1,916)(1,826)
Accelerated depreciation on airframes identified for early retirement14,915 14 
Total special charges$13,099 $(1,612)

(1) Includes $0.7 million of business interruption insurance recoveries for the three months ended March 31, 2024. No business interruption insurance recoveries were recorded during the three months ended March 31, 2023.
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Note 3 — Revenue Recognition

Passenger Revenue

Passenger revenue is the most significant category in the Company's reported operating revenues, as outlined below:
Three Months Ended March 31,
(in thousands)20242023
Scheduled service$289,879 $311,728 
Ancillary air-related charges274,793 283,902 
Loyalty redemptions15,264 13,647 
Total passenger revenue$579,936 $609,277 

Sales of passenger tickets not yet flown are recorded in air traffic liability. Passenger revenue is recognized when the underlying service is provided. As of March 31, 2024, the air traffic liability balance was $432.6 million, of which approximately $377.6 million was related to forward bookings, with the remaining $55.0 million related to credit vouchers for future travel.

The normal contract term of passenger tickets is 12 months and passenger revenue associated with future travel will principally be recognized within this time frame. Of the $353.5 million that was recorded in the air traffic liability balance as of December 31, 2023, approximately 72.7 percent was recognized into passenger revenue during the three months ended March 31, 2024.

The Company periodically evaluates the estimated amount of credit vouchers expected to expire unused and any adjustment is removed from air traffic liability and included in passenger revenue in the period in which the evaluation is complete. Estimates of passenger revenue to be recognized from air traffic liability for credit voucher breakage may be subject to variability and differ from historical experience due to the change in contract duration (which applied for vouchers issued in 2020 and in the first half of 2021) and uncertainty regarding demand for future air travel.

Resort Revenue

The Company's resort revenues for the three months ended March 31, 2024 are set forth in the table below:

Three Months Ended March 31,
(in thousands)20242023
Food and beverage10,772 — 
Rooms$9,957 $— 
Other3,158 5 
Total resort revenue$23,887 $5 

Revenue from banquets, golf, retail and spa services are included in other resort revenue. Resort revenue is recognized as the underlying services or goods have been provided. There is typically little to no lag between when the services are performed and when payment is remitted. Large group reservations, conventions, and other event bookings require advance deposits which are recorded as accrued liabilities in the Company's balance sheet until the related services and goods are provided. Guest receivables are recorded in accounts receivable on the Company's balance sheet for room nights stayed prior to payment at checkout. The amounts of advance deposit liabilities and guest ledger receivables were not material at March 31, 2024 and December 31, 2023.

Loyalty redemptions

In relation to the travel component of the Allways Rewards® co-brand credit card contract, the Company has a performance obligation to provide cardholders with points to be used for future travel award redemptions at the airline and resort. Therefore, consideration received related to the travel component is deferred based on its relative selling price and is recognized into passenger revenue and resort revenue when the points are redeemed and the underlying service is provided. Similarly, in relation to the Allways Rewards loyalty program, points earned through the program are deferred based on the stand-alone selling price and recognized into passenger revenue when the points are redeemed and the underlying service is provided.


9

The following table presents the activity of the point liability for the periods indicated:
Three Months Ended March 31,
(in thousands)20242023
Points balance at January 1$70,813 $56,500 
Points awarded (deferral of revenue)15,923 16,780 
Points redeemed (recognition of revenue)(15,271)(13,647)
Points balance at March 31$71,465 $59,633 

The current portion of the loyalty program liability represents the estimate of revenue to be recognized in the next 12 months based on historical trends, with the remaining balance reflected in noncurrent liabilities expected to be recognized into revenue in periods thereafter.


Note 4 — Property and Equipment

The following table summarizes the Company's property and equipment as of the dates indicated:
(in thousands)March 31, 2024December 31, 2023
Airline
Flight equipment$3,427,671 $3,346,216 
Computer hardware and software293,403 274,927 
Land and buildings/leasehold improvements64,242 63,863 
Other property and equipment111,077 109,727 
Sunseeker Resort
Land and buildings/leasehold improvements571,002 559,112 
Other property and equipment56,650 53,743 
Construction in progress3,596 4,389 
Total property and equipment4,527,641 4,411,977 
Less accumulated depreciation and amortization(1,004,298)(964,866)
Property and equipment, net$3,523,343 $3,447,111 

As of March 31, 2024, the Company had firm commitments to purchase 50 aircraft which are expected to begin delivering in 2024.

Accrued capital expenditures as of March 31, 2024 and December 31, 2023 were $40.9 million and $71.7 million,respectively.


Note 5 — Long-Term Debt

The following table summarizes the Company's long-term debt and finance lease obligations, net of related costs, as of the dates indicated:
(in thousands)March 31, 2024December 31, 2023
Fixed-rate debt and finance lease obligations due through 2032$1,811,098 $1,834,754 
Variable-rate debt due through 2029437,650 424,900 
Total long-term debt and finance lease obligations, net of related costs2,248,748 2,259,654 
Less current maturities, net of related costs459,171 439,937 
Long-term debt and finance lease obligations, net of current maturities and related costs$1,789,577 $1,819,717 
Weighted average fixed-interest rate on debt6.3%6.3%
Weighted average variable-interest rate on debt7.9%7.9%

10

Interest Rate(s) Per Annum atBalance as of
(dollars in thousands)Maturity DatesMarch 31, 2024March 31, 2024December 31, 2023
Senior secured notes20277.25%$550,000 $550,000 
Consolidated variable interest entities2024-20292.92%-5.19%126,762 130,650 
Revolving credit facilities2024-20277.92%200,000 200,000 
Debt secured by aircraft, engines, other equipment and real estate2025-20311.87%-8.25%593,606 596,271 
Finance leases2028-20324.44%-7.01%449,044 455,248 
Construction loan agreement20285.75%350,000 350,000 
Total debt$2,269,412 $2,282,169 
Related costs(20,664)(22,515)
Total debt net of related costs$2,248,748 $2,259,654 

Maturities of long term debt as of March 31, 2024, for the next five years and thereafter, in the aggregate, are:

(in thousands)As of March 31, 2024
Remaining in 2024$429,032 
2025180,611 
2026176,151 
2027709,354 
2028328,569 
2029142,531 
Thereafter282,500 
Total debt and finance lease obligations, net of related costs$2,248,748 

Debt Secured by Aircraft

During the three months ended March 31, 2024, the Company received $18.8 million in advances on a pre-delivery payment (PDP) credit facility secured by certain of the Company's Boeing aircraft purchase rights. The notes under the facility bear interest at a floating interest rate based on SOFR and mature on June 30, 2025 or upon delivery of the applicable aircraft.

Other Secured Debt

In March 2024, the Company entered into credit agreements for up to $218.5 million which will be collateralized by new aircraft upon delivery. The loans will bear interest at a variable rate based on 3-month SOFR and are payable in quarterly installments for a term of 12 years. No draws have been made on these financing commitments to date.


Note 6 — Income Taxes

The Company recorded a $0.4 million income tax benefit at a 31.3 percent effective tax rate and an $18.3 million income tax provision at a 24.5 percent effective tax rate for the three months ended March 31, 2024 and 2023, respectively. The effective tax rate for the three months ended March 31, 2024 differed from the statutory federal income tax rate of 21.0 percent primarily due to state income taxes, permanent tax differences, and discrete items. During the quarter, the Company recognized a $0.2 million income tax benefit for discrete items which were related to share based compensation and to an immaterial adjustment to a prior year uncertain tax benefit.

While the Company expects its effective tax rate to be fairly consistent in the near term, it will vary depending on recurring items such as the amount of income earned in each state and the state tax rate applicable to such income. Discrete items during interim periods may also affect the Company's tax rates.


Note 7 — Fair Value Measurements

The Company utilizes the market approach to measure the fair value of its financial assets. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets. The assets classified as Level 2 primarily utilize quoted market prices or alternative pricing sources including transactions involving identical or
11

comparable assets and models utilizing market observable inputs for valuation of these securities. No changes in valuation techniques or inputs occurred during the three months ended March 31, 2024.

Financial instruments measured at fair value on a recurring basis:
As of March 31, 2024As of December 31, 2023
(in thousands)TotalLevel 1Level 2TotalLevel 1Level 2
Cash equivalents   
Commercial paper$45,906 $— $45,906 $19,575 $— $19,575 
Money market funds31,427 31,427 — 33,613 33,613 — 
US Treasury bonds24,746 — 24,746 2,000 — 2,000 
Municipal debt securities20,004 — 20,004 7,848 — 7,848 
Federal agency debt securities12,077 — 12,077 8,201 — 8,201 
Total cash equivalents134,160 31,427 102,733 71,237 33,613 37,624 
Short-term     
Corporate debt securities225,735 — 225,735 210,982 — 210,982 
Commercial paper221,827 — 221,827 237,870 — 237,870 
Federal agency debt securities140,588 — 140,588 194,522 — 194,522 
Municipal debt securities14,013 — 14,013 13,914 — 13,914 
US Treasury Bonds7,298 — 7,298 14,126 — 14,126 
Certificate of deposit7,000 — 7,000 — — — 
Total short-term616,461 — 616,461 671,414 — 671,414 
Long-term      
Corporate debt securities39,054 — 39,054 43,869 — 43,869 
Federal agency debt securities4,745 — 4,745 12,135 — 12,135 
Total long-term43,799 — 43,799 56,004 — 56,004 
Total financial instruments$794,420 $31,427 $762,993 $798,655 $33,613 $765,042 

None of the Company's debt is publicly held and as a result, the Company has determined the estimated fair value of these notes to be Level 3. Certain inputs used to determine fair value are unobservable and, therefore, could be sensitive to changes in inputs. The Company utilizes the discounted cash flow method to estimate the fair value of Level 3 debt.

The carrying value and estimated fair value of long-term debt, excluding finance leases, including current maturities and without reduction for related costs, are as follows:
As of March 31, 2024As of December 31, 2023
(in thousands)Carrying ValueEstimated Fair ValueCarrying ValueEstimated Fair ValueHierarchy Level
Fair Value of Notes Payable$1,820,368 $1,815,856 $1,826,921 $1,815,351 3

Due to their short-term nature, the carrying amounts of cash, restricted cash, accounts receivable and accounts payable approximate fair value.


Note 8 — Earnings (Loss) per Share

Basic and diluted earnings (loss) per share are computed pursuant to the two-class method. Under this method, the Company attributes net income (loss) to two classes: common stock and unvested restricted stock. Unvested restricted stock awards granted to employees under the Company’s Long-Term Incentive Plan are considered participating securities as they receive non-forfeitable rights to cash dividends at the same rate as common stock.

Diluted net income per share is calculated using the more dilutive of the two methods. Under both methods, the exercise of employee stock options is assumed using the treasury stock method. The assumption of vesting of restricted stock, however, differs:

1.Assume vesting of restricted stock using the treasury stock method.

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2.Assume unvested restricted stock awards are not vested, and allocate earnings to common shares and unvested restricted stock awards using the two-class method.

For the three months ended March 31, 2024, basic and diluted loss per share are the same because of the loss position.

The following table sets forth the computation of net income (loss) per share, on a basic and diluted basis, for the periods indicated (share count and dollar amounts other than per-share amounts in the table are in thousands):
Three Months Ended March 31,
20242023
Basic:  
Net income (loss)$(919)$56,149 
Less income allocated to participating securities(354)(1,254)
Net income (loss) attributable to common stock$(1,273)$54,895 
Earnings (loss) per share, basic$(0.07)$3.09 
Weighted-average shares outstanding17,664 17,766 
Diluted:  
Net income (loss)$(919)$56,149 
Less income allocated to participating securities(354)(1,254)
Net income (loss) attributable to common stock$(1,273)$54,895 
Earnings (loss) per share, diluted$(0.07)$3.09 
Weighted-average shares outstanding17,664 17,766 
Dilutive effect of restricted stock— 104 
Adjusted weighted-average shares outstanding under treasury stock method17,664 17,870 
Participating securities excluded under two-class method— (101)
Adjusted weighted-average shares outstanding under two-class method17,664 17,769 


Note 9 — Contingencies

The Company is subject to certain legal and administrative actions it considers routine to its business activities. The Company believes the ultimate outcome of any potential and pending legal or administrative matters will not have a material adverse impact on its financial position, liquidity or results of operations.


Note 10 — Segments

Operating segments are components of a company for which separate financial and operating information is regularly evaluated and reported to the Chief Operating Decision Maker ("CODM"), and is used to allocate resources and analyze performance. The Company's CODM is the executive leadership team, which reviews information about the Company's two operating segments: Airline and Sunseeker Resort.

Airline Segment

The Airline segment operates as a single business unit and includes all scheduled service air transportation, ancillary air-related products and services, third party products and services, fixed fee contract air transportation and other airline-related revenue. The CODM evaluation includes, but is not limited to, route and flight profitability data, ancillary and third party product and service offering statistics, and fixed fee contract information when making resource allocation decisions with the goal of optimizing consolidated financial results.

Sunseeker Resort Segment

The Sunseeker Resort segment operates as a single business unit and includes hotel rooms and suites for occupancy, group meeting facilities, food and beverage options, the Aileron Golf Course and other Resort amenities. The CODM evaluation includes, but is not limited to, demand for hospitality offerings, occupancy rates, room pricing, food and beverage offerings, other charge points at the Resort and competitive information when making resource allocation decisions with the goal of optimizing consolidated financial results.

13

Selected information for the Company's segments and the reconciliation to the consolidated financial statement amounts are as follows:
 Three Months Ended March 31, 2024Three Months Ended March 31, 2023
 AirlineSunseekerConsolidatedAirlineSunseekerConsolidated
OPERATING REVENUES:  
Passenger$579,936 $— $579,936 $609,277 $— $609,277 
Third party products33,399 — 33,399 26,037 — 26,037 
Fixed fee contracts18,861 — 18,861 14,117 — 14,117 
Resort and other323 23,887 24,210 251 5 256 
Total operating revenues632,519 23,887 656,406 649,682 5 649,687 
OPERATING EXPENSES:
Salaries and benefits199,508 13,819 213,327 157,521 2,102 159,623 
Aircraft fuel170,087 — 170,087 189,546 — 189,546 
Station operations66,468 — 66,468 61,520 — 61,520 
Depreciation and amortization57,868 5,976 63,844 54,622 58 54,680 
Sales and marketing28,878 1,541 30,419 26,640 288 26,928 
Maintenance and repairs30,278 — 30,278 26,442 — 26,442 
Aircraft lease rentals5,985 — 5,985 7,092 — 7,092 
Other34,315 13,136 47,451 28,711 1,932 30,643 
Special charges, net of recoveries14,915 (1,816)13,099 14 (1,626)(1,612)
Total operating expenses608,302 32,656 640,958 552,108 2,754 554,862 
OPERATING INCOME (LOSS)24,217 (8,769)15,448 97,574 (2,749)94,825 
Interest income(12,241)— (12,241)(10,128)— (10,128)
Interest expense34,737 5,423 40,160 30,343 5,365 35,708 
Capitalized interest(10,859)(326)(11,185)(1,510)(3,670)(5,180)
Capital expenditures122,175 14,004 136,179 92,432 85,620 178,052 

Total assets were as follows as of the dates indicated:
(in thousands)As of March 31, 2024As of December 31, 2023
Airline$4,265,765 $4,213,288 
Sunseeker Resort669,366 656,122 
Consolidated$4,935,131 $4,869,410 


Note 11 — Subsequent Events

On April 15, 2024, the Company and the Transport Workers Union of America, AFL-CIO Local 577, representing the Company's flight attendants, ratified a new five-year agreement which includes immediate wage increases ranging from 20 to 41.2 percent. In addition to pay increases, the new agreement includes a greater "duty rig," which will increase the amount of time Flight Attendants are paid for being on duty, an improved 401(k) match, and a cap on healthcare cost share increases. The Company will also pay a one-time $10.0 million lump sum signing bonus on May 8, 2024.
14

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis presents factors that had a material effect on our results of operations during the three months ended March 31, 2024 and 2023. Also discussed is our financial position as of March 31, 2024 and December 31, 2023. You should read this discussion in conjunction with our unaudited consolidated financial statements, including the notes thereto, appearing elsewhere in this Form 10-Q and our consolidated financial statements appearing in our annual report on Form 10-K for the year ended December 31, 2023. This discussion and analysis contains forward-looking statements. Please refer to the section below entitled “Cautionary Note Regarding Forward-Looking Statements” for a discussion of the uncertainties, risks and assumptions associated with these statements.

First Quarter 2024 Review

First quarter 2024 highlights include:

•Total operating revenue of $656.4 million, up 1.0 percent over first quarter 2023
•Total fixed fee contracts revenue of $18.9 million, up 33.6 percent year-over-year
•Controllable completion factor of 99.7 percent
•Operating income of $15.4 million, yielding an operating margin of 2.4 percent
•Airline operating income of $24.2 million, yielding an airline-only operating margin of 3.8 percent
•Airline special charges of $14.9 million from accelerated depreciation due to aircraft retirement plan
•Enrolled approximately 540,000 new Allways Rewards members during the first quarter 2024 bringing total members to 17.9 million
•$34.7 million in total cobrand credit card remuneration in first quarter 2024, up 23.7 percent from first quarter 2023
•Airline-only operating CASM excluding fuel and special charges of 8.87 ¢, up 14.5 percent year-over-year
•Includes $20.4 million in incremental cost related to accrual of pilot retention bonuses
•After the end of the quarter, ratified a new five-year agreement with the Transport Workers Union of America, representing Allegiant's flight attendants
•Agreement includes immediate wage increases as well as certain quality-of-life improvements


AIRCRAFT

The following table sets forth the aircraft in service and operated by us as of the dates indicated:
March 31, 2024December 31, 2023
A320(1)(2)
91 92 
A319(3)
34 34 
Total125 126 
(1)Does not include one aircraft of which we have taken delivery as of March 31, 2024 and December 31, 2023 and which was not in service as of that date.
(2)Includes 23 aircraft under finance lease and 13 aircraft under operating lease as of March 31, 2024, and December 31, 2023.
(3)Includes four aircraft under operating lease as of March 31, 2024, and December 31, 2023.

As of March 31, 2024, we are a party to forward purchase agreements for 50 aircraft with six deliveries currently expected in 2024, and the remaining 44 aircraft are expected to be delivered in 2025 or later years. The timing of these deliveries is based on management's best estimates and differs from the contract in place. The delivery schedule has been and will continue to be impacted by delay notices from Boeing and continuing regulatory reviews of Boeing.

Due to the heavy maintenance needs on certain aging Airbus airframes and capacity constraints at the maintenance, repair, and overhaul contractors, we reevaluated our fleet plan and identified 21 aging airframes for early retirement to coincide with the delivery schedule for our 737 MAX aircraft provided in an amendment to our Boeing purchase agreement signed on September 29, 2023. Two airframes were retired in 2023 and two airframes were retired in first quarter 2024. The remaining airframes are to be retired between May 2024 and September 2025. The retirements were coordinated with the revised delivery schedule for the 737 MAX aircraft to provide us with opportunities for fleet renewal and replacement. The accelerated depreciation on these airframes resulting from a change in the estimated useful life is recorded as a special charge of $14.9 million during first quarter 2024. We plan to retain the engines associated with these airframes in our spare engine pool and use the substantial remaining life on these engines to offset future overhaul costs.

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NETWORK

As of March 31, 2024, we were selling 565 routes versus 574 as of the same date in 2023. Growth of our network has been impacted by challenges created by delayed aircraft deliveries, the uncertainty of our pilot staffing levels and other factors. We have identified as many as 1,400 incremental domestic nonstop routes as opportunities for future network growth, of which over 77 percent currently have no current non-stop service. Our total active number of origination cities and leisure destinations were 90 and 33, respectively, as of March 31, 2024.

Our unique model is predicated around expanding and contracting capacity to meet seasonal leisure travel demands.

TRENDS

Aircraft Fuel
The cost of fuel is volatile, as it is subject to many economic and geopolitical factors we can neither control nor predict. Significant increases in fuel costs could materially affect our operating results and profitability. We have not sought to use financial derivative products to hedge our exposure to fuel price volatility, nor do we have any plans to do so in the future.

The cost per gallon of fuel began to increase significantly in 2021, and the increases were exacerbated by the geopolitical impact of the war in Ukraine. Increases in refinery costs also added to our fuel cost. Although the average fuel cost per gallon declined in first quarter 2024 when compared to the same period in 2023, the average fuel cost per gallon in the first quarter 2024 remained 62.9 percent higher than in first quarter 2021. Despite an 11.4 percent decrease in fuel cost per gallon during the first quarter 2024 compared to the same period in 2023, we expect high fuel costs will continue to impact our total costs and operating results.

Boeing Agreement

We have signed an agreement and amendments with The Boeing Company to purchase 50 newly manufactured 737 MAX aircraft with options to purchase up to an additional 80 737 MAX aircraft. We believe this new aircraft purchase is complementary with our low cost strategy based on our intent to retain ownership of the aircraft, the longer useful life for depreciation purposes, and expected fuel savings and operational reliability from the use of these new aircraft.

In the interest of increased quality control at Boeing and its suppliers, the FAA has indicated aircraft production rates will be capped until they are fully satisfied with Boeing's quality practices. These factors and other Boeing delays in obtaining needed regulatory approvals could delay deliveries to us even further than management's current expectations.

Capacity Growth

Delays for new Boeing aircraft deliveries, aircraft in heavy maintenance, uncertainty as to pilot staffing levels and airport construction disruption continue to impact our ability to schedule network growth. As a result, we have pulled back some of our capacity growth in 2024. We believe these issues are not unique to Allegiant.

Union Negotiations

The collective bargaining agreement with our pilots is currently amendable. We and the International Brotherhood of Teamsters ("IBT”) jointly requested the mediation services of the National Mediation Board ("NMB") in January 2023 to assist with the negotiations. The mediation process with the NMB is continuing with new union negotiators and leadership, with dates for negotiation sessions currently scheduled through June 2024.

Separately from the ongoing collective bargaining agreement negotiations, to address retention and pilot pay issues and increase pilot staffing levels, effective in May 2023, we began recognizing a retention bonus for pilots who continue employment with us until a new labor agreement is approved. The amount is 35 percent of current hourly pay rates, except for the first year first officers for whom the percentage is 82 percent, calculated at a minimum of 85 pay credit hours per month. The IBT concurred with this approach. Our implementation of the retention bonus has contributed to our ability to add pilots through hiring and slower attrition.

For the three months ended March 31, 2024, we recorded estimated pilot retention bonus accruals of $20.4 million bringing the total accrual to $70.6 million at period end. The bonus will be paid to all pilots remaining employed with us upon ratification of a new collective bargaining agreement.

On April 15, 2024, our flight attendants ratified a new five-year agreement we negotiated with the Transportation Workers Union (TWU). The new contract provides for immediate wage increases, improved pay overrides, an increased 401(k) match and the payment of a $10.0 million ratification bonus in May 2024. The agreement provides us with increased flexibility in scheduling flight attendants during irregular operations, which should increase productivity and reduce operational disruptions.


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Establishment of ESG Goals

We have established ESG goals in the areas of environmental, social and governance. We will report on our progress toward meeting those goals within our annual sustainability reports.

VivaAerobus Alliance

In December 2021, we announced plans for a fully-integrated commercial alliance agreement with VivaAerobus, designed to expand options for nonstop leisure air travel between our markets in the United States and Mexico. We and VivaAerobus have submitted a joint application to the DOT requesting approval of and antitrust immunity for the alliance. Although the DOT process has progressed substantially, their review of our application is currently suspended pending the outcome of diplomatic engagement on broader treaty issues and, as a result, the timing of commencement of this service is uncertain as it will depend on when or if the DOT will ultimately approve the grant of antitrust immunity.

Sunseeker Resort

Sunseeker Resort at Charlotte Harbor opened in December 2023. While the Resort is in the early stages of financial maturity, food and beverage revenues have exceeded our initial expectations and have accounted for nearly half of the Resort's first quarter revenue. As with any new hotel or resort, we expect occupancy and operating performance to build in the coming years.
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RESULTS OF OPERATIONS

Comparison of three months ended March 31, 2024 to three months ended March 31, 2023

Operating Revenue

Passenger revenue. First quarter 2024 passenger revenue decreased slightly compared to the same period in 2023 on relatively flat capacity. The decrease in passenger revenue was driven by lower average scheduled service base fare and lower average ancillary fare, which decreased 5.0 percent and 2.0 percent respectively, coupled with a 1.3 percent decrease in passengers flown, compared to first quarter 2023. The lower base fare is attributable to weaker demand in off-peak periods. The lower ancillary fare is due, in part, to issues faced in transitioning to the Navitaire system.

Third party products revenue. Third party products revenue for first quarter 2024 increased 28.3 percent compared to first quarter 2023. The increase from 2023 is primarily the result of a 34.8 percent increase in the marketing component of co-brand credit card revenues.

Fixed fee contract revenue. Fixed fee contract revenue for first quarter 2024 increased 33.6 percent compared to the same period in 2023 on a 48.3 percent increase in fixed fee departures as the result of strong performance during March Madness and growth in corporate charters and other sports flying.

Operating Expenses

We primarily evaluate our expense management by comparing our costs per available seat mile (ASM) across different periods, which enables us to assess trends in each expense category. The following table presents unit costs on a per ASM basis, or CASM, for the indicated periods. Excluding fuel on a per ASM basis provides management and investors the ability to measure and monitor our cost performance absent fuel price volatility. Both the cost and availability of fuel are subject to many economic and political factors beyond our control. Excluding special charges and Sunseeker operating costs allows management and investors to better compare our airline unit costs with those of other airlines.
 Three Months Ended March 31,Percent Change
Unitized costs (in cents)20242023YoY
Salaries and benefits*4.47  ¢3.41  ¢31.1 %
Aircraft fuel3.56 4.05 (12.1)
Station operations1.39 1.32 5.3 
Depreciation and amortization*1.34 1.17 14.5 
Sales and marketing*0.64 0.58 10.3 
Maintenance and repairs0.63 0.57 10.5 
Aircraft lease rentals0.13 0.15 (13.3)
Other*1.00 0.64 56.3 
Special charges, net of insurance recoveries*0.27 (0.03)NM
CASM13.43  ¢11.86  ¢13.2 
Operating CASM, excluding fuel but including Sunseeker Resort9.87  ¢7.81  ¢26.4
Airline special charges CASM0.31 — NM
Sunseeker Resort CASM0.69 0.06 NM
Airline operating CASM, excluding fuel, special charges and Sunseeker Resort activity8.87  ¢7.75  ¢14.5 
* These expense line items include Sunseeker Resort activity
NM Not Meaningful

Operating CASM, excluding fuel, airline special charges, and Sunseeker Resort activity. Operating CASM, excluding fuel, airline special charges and Sunseeker Resort activity, increased by 14.5 percent to 8.87 ¢ for first quarter 2024 from 7.75 ¢ in first quarter 2023. The CASM-ex increase is primarily attributable to a 26.7 percent or $42.0 million increase in airline salaries and benefits expense in first quarter 2024 over first quarter 2023 (for the reasons described in the expense line item discussion below). This increase was on a relatively flat, approximately 2.0 percent, increase in capacity as we continue to manage capacity to meet demand.

Salaries and benefits expense. Salaries and benefits expense increased $53.7 million, or 33.6 percent, in first quarter 2024 compared to first quarter 2023. Higher salaries and benefits expense was primarily driven by an 11.9 percent increase in airline full time equivalent employees (including an 18.9 percent increase in the number of pilots employed since March 31, 2023) and increased crew pay, including the impact of a $20.4 million accrual for pilot retention bonuses during first quarter 2024. The accrued pilot retention bonus is payable after completion of a new collective bargaining agreement with this work group. The grand opening of Sunseeker Resort in December 2023 further drove the increase by adding nearly 1,000 Resort team members and an increase of $11.7 million in salaries and benefits expense in first quarter 2024.

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Aircraft fuel expense. Aircraft fuel expense decreased $19.5 million, or 10.3 percent, for first quarter 2024 compared to first quarter 2023. This is primarily due to an 11.4 percent decrease in average fuel cost per gallon, offset by a 1.4 percent increase in fuel gallons consumed.

Station operations expense. Station operations expense for first quarter 2024 increased $4.9 million, or 8.0 percent compared to first quarter 2023 due to increased costs associated with airport fees, landing fees, and other stations-related expense.

Depreciation and amortization expense. Depreciation and amortization expense for first quarter 2024 increased by 16.8 percent compared to first quarter 2023 due to a $2.1 million increase in heavy maintenance amortization, $6.0 million of depreciation expense related to the Sunseeker Resort, and other assets placed into service since first quarter 2023.

Maintenance and repairs expense. Maintenance and repairs expense for first quarter 2024 increased $3.8 million, or 14.5 percent, compared to first quarter 2023, as the result of a 2.5 percent increase in the average number of aircraft in service and a $3.7 million increase in non-capitalized repair costs.

Sales and marketing expense. Sales and marketing expense for first quarter 2024 increased by 13.0 percent compared to the same period in 2023, primarily due to increased costs associated with advertising campaigns for our co-brand credit card and for Sunseeker.

Other operating expense. Other operating expense increased $16.8 million or 54.9 percent in first quarter 2024 compared to first quarter 2023. The increase is primarily attributable to $13.1 million in Sunseeker Resort operating expenses consisting of $3.6 million cost of sales, $2.1 million insurance, $0.9 million property taxes, and other general and administrative expenses. Incremental increases in crew travel, training, and outside labor expense also contributed to the increase in other operating expense.

Special charges. During first quarter 2024, we recorded $13.1 million of special charges including $14.9 million of accelerated depreciation from the early retirement of 21 airframes from 2023 through 2025 pursuant to a revised fleet plan, which was offset by net insurance recoveries related to Sunseeker Resort hurricane damages.

Interest Expense and Income

Interest expense, net for the quarter ended March 31, 2024 decreased by $3.7 million, or 18.0 percent over first quarter 2023. The decrease is primarily attributable to a $6.0 million increase in capitalized interest (which consists of a $9.3 million increase in capitalized interest related to Boeing PDP deposits offset by a $3.3 million decrease in capitalized interest related to the Sunseeker Resort) and a $2.1 million increase in interest income due to higher yields on investments in debt securities. These amounts were offset by an increase of $4.4 million in interest expense due to a year-over-year increase of $142.9 million of debt outstanding.

Income Tax Expense

We recorded a $0.4 million income tax benefit at an effective tax rate of 31.3 percent and an $18.3 million provision for income tax at a 24.5 percent effective tax rate for the three months ended March 31, 2024 and 2023, respectively. The effective tax rate for the three months ended March 31, 2024 differed from the statutory federal income tax rate of 21.0 percent primarily due to state income taxes, permanent tax differences, and discrete items. During the quarter, we recognized a $0.2 million income tax benefit for discrete items which were related to share based compensation and to an immaterial adjustment to a prior year uncertain tax benefit.
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Comparative Airline-Only Operating Statistics

The following tables set forth our airline operating statistics for the periods indicated:
Three Months Ended March 31,
Percent Change (1)
20242023YoY
Airline operating statistics (unaudited):  
Total system statistics:  
Passengers 4,104,8604,148,453 (1.1)%
Available seat miles (ASMs) (thousands)4,771,9714,677,622 2.0 
Airline operating expense per ASM (CASM) (cents)
12.75  ¢11.80  ¢8.1 
Fuel expense per ASM (cents)3.56  ¢4.05  ¢(12.1)
Airline special charges per ASM (cents)0.31  ¢—  ¢NM
Airline operating CASM, excluding fuel and special charges (cents)
8.87  ¢7.75  ¢14.5 
Departures29,22529,145 0.3 
Block hours72,63271,790 1.2 
Average stage length (miles)919908 1.2 
Average number of operating aircraft during period125.8122.7 2.5 
Average block hours per aircraft per day6.36.5 (3.1)
Full-time equivalent employees at end of period 5,9515,318 11.9 
Fuel gallons consumed (thousands)56,22455,434 1.4 
ASMs per gallon of fuel84.984.4 0.6 
Average fuel cost per gallon$3.03$3.42 (11.4)
Scheduled service statistics:  
Passengers 4,069,519 4,122,196 (1.3)
Revenue passenger miles (RPMs) (thousands)3,883,8103,925,362 (1.1)
Available seat miles (ASMs) (thousands)4,636,922 4,573,766 1.4
Load factor83.8 %85.8 %(2.0)
Departures28,177 28,273 (0.3)
Block hours70,365 70,009 0.5
Average seats per departure177.5 176.0 0.9
Yield (cents) (2)
7.86  ¢8.29  ¢(5.2)
Total passenger revenue per ASM (TRASM) (cents)(3)
13.23  ¢13.89  ¢(4.8)
Average fare - scheduled service(4)
$74.98 $78.93 (5.0)
Average fare - air-related charges(4)
$67.52 $68.87 (2.0)
Average fare - third party products$8.21 $6.32 29.9
Average fare - total$150.71 $154.12 (2.2)
Average stage length (miles)926 915 1.2
Fuel gallons consumed (thousands)54,566 54,145 0.8
Average fuel cost per gallon$3.01 $3.42 (12.0)
Percent of sales through website during period96.5 %95.6 %0.9
Other data:
Rental car days sold357,944 354,426 1.0
Hotel room nights sold61,294 68,939 (11.1)
(1)Except load factor and percent of sales through website during period, which are presented as a percentage point change.
(2)Defined as scheduled service revenue divided by revenue passenger miles.
(3)Various components of this measure do not have a direct correlation to ASMs. This measure is provided on a per ASM basis so as to facilitate comparison with airlines reporting revenues on a per ASM basis.
(4)Reflects division of passenger revenue between scheduled service (base fare) and air-related charges in our booking path.
NM Not Meaningful
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LIQUIDITY AND CAPITAL RESOURCES

Current liquidity

Cash, cash equivalents and investment securities (short-term and long-term) decreased slightly to $853.7 million at March 31, 2024, from $870.7 million at December 31, 2023. Investment securities represent highly liquid marketable securities which are available-for-sale.

Restricted cash represents escrowed funds under fixed fee contracts and cash collateral against letters of credit required by hotel properties for guaranteed room availability, airports and certain other parties. Under our fixed fee flying contracts, we require our customers to prepay for flights to be provided by us. The prepayments are escrowed until the flight is completed and are recorded as restricted cash with a corresponding amount reflected as air traffic liability.

Our operating cash flows and long-term debt borrowings have allowed us to invest in our fleet renewal. Future capital needs are primarily for the acquisition of additional aircraft, including our existing aircraft commitments.

We believe we have more than adequate liquidity resources through our cash balances, operating cash flows, availability under revolving credit facilities, PDP facilities, and borrowings to meet our future contractual obligations. We have also entered into several financing commitments that will fund upon delivery of our new Boeing aircraft. We will continue to consider raising funds through debt financing as needed to fund capital expenditures.

Our current share repurchase authority is $75.7 million. We have not repurchased shares on the open market since December 2023.

Debt

Our debt and finance lease obligations balance, without reduction for related issuance costs, decreased slightly from $2.28 billion as of December 31, 2023 to $2.27 billion as of March 31, 2024. Net debt (total debt less unrestricted cash, cash equivalents, and investments) as of March 31, 2024 was $1.40 billion, an increase of $6.1 million from December 31, 2023.

During the three months ended March 31, 2024, we entered into credit agreements for up to $218.5 million which will be collateralized by new aircraft deliveries. These commitments, along with commitments existing prior to first quarter 2024, are expected to refinance on a long term basis $121.0 million of our PDP loan balances which are presently classified as current maturities of long term debt. No draws have been made on these financing commitments to date as they will be funded when the aircraft to be pledged are delivered to us.

As of March 31, 2024, approximately 80.5 percent of our debt and finance lease obligations are fixed-rate.

Sources and Uses of Cash

Operating Activities. Operating cash inflows are primarily derived from providing air transportation and related ancillary products and services to customers. During the three months ended March 31, 2024, our operating activities provided $167.8 million of cash compared to $215.4 million during the same period 2023. This change is primarily attributable to a $57.1 million decrease in net income compared to first quarter 2023.

Investing Activities. Cash used for investing activities was $93.6 million during the three months ended March 31, 2024 compared to $114.2 million during the same period in 2023. The change is primarily attributable to a $33.9 million increase of proceeds from maturities of investment securities, net of purchases, offset by $10.8 million lower Sunseeker insurance proceeds during the quarter (included in the other investing activities line item) and a $3.5 million increase in purchase of property and equipment, including aircraft PDPs.

Financing Activities. Cash used in financing activities for the three months ended March 31, 2024 was $23.5 million, compared to $11.9 million of cash used in the same period in 2023. The change was primarily driven by a $40.8 million decrease in proceeds from issuance of debt, offset by a $20.0 million decrease in principal repayments on long term debt and finance lease obligations and a $6.9 million decrease in other financing activities primarily related to the disbursement of funds related to the Sunseeker construction loan. We also paid $11.0 million in cash dividends during the quarter, compared to $12.3 million cash used for repurchases of common stock in the same period of 2023.
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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

We have made forward-looking statements in this quarterly report on Form 10-Q, and in the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” that are based on our management’s beliefs and assumptions, and on information currently available to our management. Forward-looking statements include our statements regarding the number of contracted aircraft to be placed in service in the future, the timing of aircraft deliveries and retirements, the number of possible future markets that may be served, the implementation of a joint alliance with VivaAerobus, the operations of our Sunseeker Resort, as well as other information concerning future results of operations, business strategies, financing plans, competitive position, industry environment, potential growth opportunities, the effects of future regulation and the effects of competition. Forward-looking statements include all statements that are not historical facts and can be identified by the use of forward-looking terminology such as the words "believe," "expect," "anticipate," "intend," "plan," "estimate," “project,” “hope” or similar expressions.


Forward-looking statements involve risks, uncertainties and assumptions. Actual results may differ materially from those expressed in the forward-looking statements. Important risk factors that could cause our results to differ materially from those expressed in the forward-looking statements may be found in our periodic reports filed with the Securities and Exchange Commission at www.sec.gov. These risk factors include, without limitation, the impact of regulatory reviews of Boeing on its aircraft delivery schedule, an accident involving, or problems with, our aircraft, public perception of our safety, our reliance on our automated systems, our reliance on Boeing and other third parties to deliver aircraft under contract to us on a timely basis, risk of breach of security of personal data, volatility of fuel costs, labor issues and costs, the ability to obtain regulatory approvals as needed, the effect of economic conditions on leisure travel, debt covenants and balances, the impact of government regulations on the airline industry, the ability to finance aircraft to be acquired, the ability to obtain necessary government approvals to implement the announced alliance with VivaAerobus and to otherwise prepare to offer international service, terrorist attacks, risks inherent to airlines, our competitive environment, our reliance on third parties who provide facilities or services to us, the impact of management changes and the possible loss of key personnel, economic and other conditions in markets in which we operate, the ability to successfully operate Sunseeker Resort at Charlotte Harbor, increases in maintenance costs and the availability of outside maintenance contractors to perform needed work on our aircraft on a timely basis and at acceptable rates, cyclical and seasonal fluctuations in our operating results and the perceived acceptability of our environmental, social, and governance efforts.

Any forward-looking statements are based on information available to us today and we undertake no obligation to publicly update any forward-looking statements, whether as a result of future events, new information or otherwise.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

There have been no material changes to our critical accounting estimates during the three months ended March 31, 2024. For information regarding our critical accounting policies and estimates, see disclosures in the Consolidated Financial Statements and accompanying notes contained in our 2023 Form 10-K, and in Note 1 of Notes to Consolidated Financial Statements (unaudited).
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Item 3. Quantitative and Qualitative Disclosures About Market Risk

We are subject to certain market risks, including commodity prices (specifically aircraft fuel). The adverse effects of changes in these markets could pose potential losses as discussed below. The sensitivity analysis provided does not consider the effects that such adverse changes may have on overall economic activity, nor does it consider additional actions we may take to mitigate our exposure to such changes. Actual results may differ.

Aircraft Fuel

Our results of operations can be significantly impacted by changes in the price and availability of aircraft fuel. Aircraft fuel expense for the three months ended March 31, 2024 represented 26.5 percent of our total operating expenses. Increases in fuel prices, or a shortage of supply, could have a material impact on our operations and operating results. Based on our fuel consumption for the three months ended March 31, 2024, a hypothetical ten percent increase in the average price per gallon of fuel would have increased fuel expense by approximately $17.1 million. We do not hedge fuel price risk.

Interest Rates

As of March 31, 2024, we had $441.6 million of variable-rate debt, including current maturities, and without reduction for $4.0 million in related costs. A hypothetical 100 basis point change in interest rates would have affected interest expense on variable rate debt by approximately $1.1 million for the three months ended March 31, 2024.

Item 4. Controls and Procedures

As of March 31, 2024, under the supervision and with the participation of our management, including our chief executive officer ("CEO") and chief financial officer (“CFO”), we evaluated the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended, or the “Exchange Act”) as of the end of the period covered by this report. Based on that evaluation, management, including our CEO and CFO, has concluded that our disclosure controls and procedures are designed, and are effective, to give reasonable assurance that the information we are required to disclose is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and is accumulated and communicated to the Company’s management, including the CEO and the CFO, as appropriate to allow timely decisions regarding required disclosure.

Except as set forth below, there were no changes in our internal control over financial reporting that occurred during the quarter ending March 31, 2024, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

The Sunseeker Resort opened on December 15, 2023, and first quarter 2024 was the Resort’s first full quarter of operations. Management has implemented internal controls over financial reporting related to Resort activities and continues to evaluate those controls and procedures.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

We are subject to certain legal and administrative actions we consider routine to our business activities. We believe the ultimate outcome of any pending legal or administrative matters will not have a material adverse impact on our financial position, liquidity or results of operations.

Item 1A. Risk Factors

We have evaluated our risk factors and determined there are no changes to those set forth in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2023 and filed with the Commission on February 29, 2024.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Our Repurchases of Equity Securities

The following table reflects the repurchases of our common stock during first quarter 2024:
Period
Total Number of Shares Purchased (1)
Average Price Paid per ShareTotal Number of Shares Purchased as Part of our Publicly Announced Plan
Approximate Dollar Value of Shares that May yet be Purchased Under the Plans or Programs (in thousands) (2)
January1,148 $79.91 None
February32 $75.74 None
March688 $72.40 None
Total1,868 $77.07 — $75,697 

(1)Represents shares repurchased from employees who vested a portion of their restricted stock grants. These share repurchases were made at the election of each employee pursuant to an offer to repurchase by us. In each case, the shares repurchased constituted a portion of vested shares necessary to satisfy income tax withholding requirements.
(2)Represents the remaining dollar amount of open market purchases of our common stock which has been authorized by our board under a share repurchase program.

Item 3. Defaults Upon Senior Securities

None

Item 4. Mine Safety Disclosures

Not applicable

Item 5. Other Information

Securities Trading Plans of Directors and Executive Officers

During the three months ended March 31, 2024, none of our directors or executive officers adopted or terminated any contract, instruction or written plan for the purchase or sale of the Company's securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any “non-Rule 10b5-1 trading arrangement.”
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Item 6. Exhibits
101.SCHXBRL Taxonomy Extension Schema Document
101.CALXBRL Taxonomy Extension Calculation Linkbase Document
101.DEFXBRL Taxonomy Extension Definition Linkbase Document
101.LABXBRL Taxonomy Extension Labels Linkbase Document
101.PREXBRL Taxonomy Extension Presentation Linkbase Document

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

ALLEGIANT TRAVEL COMPANY
Date: May 9, 2024By:/s/ Robert J. Neal
Robert J. Neal, as duly authorized officer of the Company (Senior Vice President and Chief Financial Officer) and as Principal Financial Officer
26

Exhibit 31.1
Certifications
I, Maurice J. Gallagher, Jr., certify that:

1.I have reviewed this quarterly report on Form 10-Q of Allegiant Travel Company;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.


Date: May 9, 2024/s/ Maurice J. Gallagher, Jr.
 Title: Principal Executive Officer



Exhibit 31.2
Certifications
I, Robert Neal, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Allegiant Travel Company;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.


Date: May 9, 2024/s/ Robert J. Neal
 Title: Principal Financial Officer



Exhibit 32

Allegiant Travel Company Certification under Section 906 of the Sarbanes/Oxley Act - filed as an exhibit to Form 10-Q for the Quarter Ended March 31, 2024

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report of Allegiant Travel Company (the “Company”) on Form 10-Q for the period ended March 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Maurice J. Gallagher, Jr., Chief Executive Officer of the Company, and Robert Neal, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to the best of our knowledge:

1.The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Maurice J. Gallagher, Jr. /s/ Robert J. Neal
Maurice J. Gallagher, Jr. Robert J. Neal
Principal Executive Officer Principal Financial Officer
May 9, 2024 May 9, 2024

The foregoing Certification shall not be deemed incorporated by reference by any general statement incorporating by reference this report into any filing under the Securities Act of 1933 or under the Securities Exchange Act of 1934, except to the extent that we specifically incorporate this information by reference, and shall not otherwise be deemed filed under such Acts.


v3.24.1.u1
Cover Page - shares
 3 Months Ended
Mar. 31, 2024
Apr. 29, 2024
Document and Entity Information [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2024  
Document Transition Report false  
Entity File Number 001-33166  
Entity Registrant Name Allegiant Travel Co  
Entity Incorporation, State or Country Code NV  
Entity Tax Identification Number 20-4745737  
Entity Address, Address Line One 1201 North Town Center Drive  
Entity Address, City or Town Las Vegas,  
Entity Address, State or Province NV  
Entity Address, Postal Zip Code 89144  
City Area Code 702  
Local Phone Number 851-7300  
Title of 12(b) Security Common stock, par value $0.001  
Trading Symbol ALGT  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   18,232,284
Current Fiscal Year End Date --12-31  
Amendment Flag false  
Entity Central Index Key 0001362468  
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus Q1  
v3.24.1.u1
CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
CURRENT ASSETS    
Cash and cash equivalents $ 193,414 $ 143,259
Restricted cash 16,859 16,325
Short-term investments 616,461 671,414
Accounts receivable 72,494 70,743
Expendable parts, supplies and fuel, net 35,806 36,335
Prepaid expenses and other current assets 72,072 63,054
TOTAL CURRENT ASSETS 1,007,106 1,001,130
Property and equipment, net 3,523,343 3,447,111
Long-term investments 43,799 56,004
Deferred major maintenance, net 165,701 165,767
Operating lease right-of-use assets, net 97,046 100,707
Deposits and other assets 98,136 98,691
TOTAL ASSETS: 4,935,131 4,869,410
TOTAL ASSETS:    
Accounts payable 69,486 54,484
Accrued liabilities 297,329 305,078
Current operating lease liabilities 21,944 20,873
Air traffic liability 432,561 353,488
Current loyalty program liability 40,182 38,447
Current maturities of long-term debt and finance lease obligations, net of related costs 459,171 439,937
TOTAL CURRENT LIABILITIES 1,320,673 1,212,307
Long-term debt and finance lease obligations, net of current maturities and related costs 1,789,577 1,819,717
Deferred income taxes 384,036 384,602
Noncurrent operating lease liabilities 77,519 82,410
Noncurrent loyalty program liability 31,283 32,366
Other noncurrent liabilities 9,887 9,448
TOTAL LIABILITIES: 3,612,975 3,540,850
TOTAL LIABILITIES:    
Common stock, par value $0.001 26 26
Treasury shares (682,075) (681,932)
Additional paid in capital 747,873 741,055
Accumulated other comprehensive income, net 2,783 3,991
Retained earnings 1,253,549 1,265,420
TOTAL EQUITY: 1,322,156 1,328,560
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY: $ 4,935,131 $ 4,869,410
v3.24.1.u1
CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - $ / shares
Mar. 31, 2024
Dec. 31, 2023
Statement of Financial Position [Abstract]    
Common Stock, Par or Stated Value Per Share (in dollars per share) $ 0.001 $ 0.001
v3.24.1.u1
CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
OPERATING REVENUES:    
Passenger $ 579,936 $ 609,277
Third party products 33,399 26,037
Fixed fee contracts 18,861 14,117
Resort and other 24,210 256
Total operating revenues 656,406 649,687
OPERATING EXPENSES:    
Salaries and benefits 213,327 159,623
Aircraft fuel 170,087 189,546
Station operations 66,468 61,520
Depreciation and amortization 63,844 54,680
Sales and marketing 30,419 26,928
Maintenance and repairs 30,278 26,442
Aircraft lease rentals 5,985 7,092
Other 47,451 30,643
Special charges, net of recoveries 13,099 (1,612)
Total operating expenses 640,958 554,862
OPERATING INCOME 15,448 94,825
OTHER (INCOME) EXPENSES:    
Interest expense 40,160 35,708
Capitalized interest (11,185) (5,180)
Interest income (12,241) (10,128)
Other, net 51 7
Total other expenses 16,785 20,407
INCOME (LOSS) BEFORE INCOME TAXES (1,337) 74,418
INCOME TAX PROVISION (BENEFIT) (418) 18,269
NET INCOME (LOSS) $ (919) $ 56,149
Earnings (loss) per share to common shareholders:    
Basic (in dollars per share) $ (0.07) $ 3.09
Diluted (in dollars per share) $ (0.07) $ 3.09
Shares used for computation:    
Basic (in shares) 17,664 17,766
Diluted (in shares) 17,664 17,769
Cash dividends declared per share (in dollars per share) $ 0.60 $ 0
v3.24.1.u1
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Statement of Comprehensive Income [Abstract]    
NET INCOME (LOSS) $ (919) $ 56,149
Other comprehensive income:    
Change in available for sale securities, net of tax (1,208) 1,985
TOTAL COMPREHENSIVE INCOME (LOSS) $ (2,127) $ 58,134
v3.24.1.u1
CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (unaudited) - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Additional Paid-in Capital
AOCI Attributable to Parent
Retained Earnings
Treasury shares
Parent
Beginning balance (in shares) at Dec. 31, 2022   18,128          
Par value, beginning balance at Dec. 31, 2022   $ 25          
Beginning balance at Dec. 31, 2022 $ 1,220,698   $ 709,471 $ 1,257 $ 1,169,968 $ (660,023)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation (in shares)   (5)          
Share-based compensation     5,035       $ 5,035
Shares repurchased by the Company and held as treasury shares (in shares)   (125)          
Shares repurchased by the Company and held as treasury shares           (12,470) (12,470)
Other comprehensive income (loss)       1,985     1,985
Net income (loss)         56,149   56,149
Ending balance (in shares) at Mar. 31, 2023   17,998          
Par value, ending balance at Mar. 31, 2023   $ 25          
Ending balance at Mar. 31, 2023 1,271,397   714,506 3,242 1,226,117 (672,493)  
Beginning balance (in shares) at Dec. 31, 2023   18,269          
Par value, beginning balance at Dec. 31, 2023 26 $ 26          
Beginning balance at Dec. 31, 2023 1,328,560   741,055 3,991 1,265,420 (681,932)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation (in shares)   15          
Share-based compensation     6,818       6,818
Shares repurchased by the Company and held as treasury shares (in shares)   (2)          
Shares repurchased by the Company and held as treasury shares           (143) (143)
Cash dividends         (10,952)   (10,952)
Other comprehensive income (loss)       (1,208)     (1,208)
Net income (loss)         (919)   $ (919)
Ending balance (in shares) at Mar. 31, 2024   18,282          
Par value, ending balance at Mar. 31, 2024 26 $ 26          
Ending balance at Mar. 31, 2024 $ 1,322,156   $ 747,873 $ 2,783 $ 1,253,549 $ (682,075)  
v3.24.1.u1
CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (unaudited) (Parenthetical)
 3 Months Ended
Mar. 31, 2024
$ / shares
Statement of Stockholders' Equity [Abstract]  
Common stock, dividends, per share, cash paid (in dollars per share) $ 0.60
v3.24.1.u1
Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Statement of Cash Flows [Abstract]    
NET INCOME (LOSS) $ (919) $ 56,149
Depreciation and amortization 63,844 54,680
Special charges, net of recoveries 12,858 (1,835)
Other adjustments 2,893 1,592
Air traffic liability 79,072 100,071
Other - net 10,057 4,743
Net cash provided by operating activities 167,805 215,400
Cash flows from investing activities:    
Purchase of investment securities (176,119) (251,937)
Proceeds from maturities of investment securities 246,663 288,591
Aircraft pre-delivery deposits (35,053) (33,516)
Purchase of property and equipment (131,862) (129,883)
Other investing activities 2,787 12,506
Net cash used in investing activities (93,584) (114,239)
Cash flows from financing activities:    
Cash dividends paid to shareholders (10,952) 0
Proceeds from the issuance of debt and finance lease obligations 18,755 59,516
Repurchase of common stock (143) (12,470)
Principal payments on debt and finance lease obligations (31,512) (51,492)
Debt issuance costs 0 (877)
Other financing activities 320 (6,554)
Net cash used in financing activities (23,532) (11,877)
NET CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH 50,689 89,284
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD 159,584 245,446
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD 210,273 334,730
CASH PAYMENTS FOR:    
Interest paid, net of amount capitalized 31,971 41,645
Income tax payments 32 14
SUPPLEMENTAL DISCLOSURE OF NONCASH TRANSACTIONS:    
Right-of-use (ROU) assets acquired 1,379 0
Purchases of property and equipment in accrued liabilities $ 40,935 $ 69,240
v3.24.1.u1
Summary of Significant Accounting Policies
 3 Months Ended
Mar. 31, 2024
Accounting Policies [Abstract]  
Summary of Significant Accounting Policies Summary of Significant Accounting Policies
Basis of Presentation

The accompanying unaudited consolidated financial statements include the accounts of Allegiant Travel Company (the “Company”) and its majority-owned operating subsidiaries. The Company's investments in unconsolidated affiliates, which are 50 percent or less owned, are accounted for under the equity or cost method, and are insignificant to the consolidated financial statements. All intercompany balances and transactions have been eliminated.

These unaudited consolidated financial statements reflect all normal recurring adjustments which management believes are necessary to present fairly the financial position, results of operations, and cash flows of the Company for the respective periods presented. Certain information and footnote disclosures normally included in the annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") have been omitted pursuant to the rules and regulations of the Securities and Exchange Commission for Form 10-Q. These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements of the Company and notes thereto included in the annual report of the Company on Form 10-K for the year ended December 31, 2023 and filed with the Securities and Exchange Commission.

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities, at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from these estimates.

The Company has reclassified certain prior period amounts to conform to the current period presentation.
v3.24.1.u1
Special Charges
 3 Months Ended
Mar. 31, 2024
Unusual or Infrequent Items, or Both [Abstract]  
Special Charges Special Charges
As a result of Hurricane Ian's direct hit on the southwest coast of Florida on September 28, 2022, the construction site of Sunseeker Resort at Charlotte Harbor (the "Resort" or "Sunseeker Resort") was damaged. There was a subsequent weather-related event and a fire that caused additional damage in fourth quarter 2022. In addition, during third quarter 2023, the Sunseeker Resort construction site sustained additional damages related to Hurricane Idalia. The Company recorded estimated losses in 2022 and 2023 based on its assessment of these damages and the anticipated future restoration cost. The estimated losses were recorded to special charges and are offset by insurance recoveries in the period they are approved. To date, the Company has recorded $78.2 million in losses and $52.5 million in insurance recoveries. The Company has submitted additional insurance claims that remain outstanding at the date of this report.

Due to the heavy maintenance needs on certain aging Airbus airframes and capacity constraints at the maintenance, repair, and overhaul contractors, the Company reevaluated its fleet plan and identified 21 airframes for early retirement to coincide with 737 MAX aircraft deliveries as scheduled under an amendment to the Company's agreement with The Boeing Company signed in September 2023. Two airframes were retired in 2023 and two airframes were retired in first quarter 2024. The remaining airframes are to be retired between May 2024 and September 2025. The accelerated depreciation on these airframes resulting from a change in the estimated useful life is recorded as a special charge.
Special Charges

The table below summarizes special charges recorded during the three months ended March 31, 2024, and 2023.
Three Months Ended March 31,
(in thousands)20242023
Sunseeker weather and related events$100 $200 
Sunseeker weather and related events, insurance recoveries(1)
(1,916)(1,826)
Accelerated depreciation on airframes identified for early retirement14,915 14 
Total special charges$13,099 $(1,612)

(1) Includes $0.7 million of business interruption insurance recoveries for the three months ended March 31, 2024. No business interruption insurance recoveries were recorded during the three months ended March 31, 2023.
v3.24.1.u1
Revenue Recognition
 3 Months Ended
Mar. 31, 2024
Revenue Recognition [Abstract]  
Revenue Recognition Revenue Recognition
Passenger Revenue

Passenger revenue is the most significant category in the Company's reported operating revenues, as outlined below:
Three Months Ended March 31,
(in thousands)20242023
Scheduled service$289,879 $311,728 
Ancillary air-related charges274,793 283,902 
Loyalty redemptions15,264 13,647 
Total passenger revenue$579,936 $609,277 

Sales of passenger tickets not yet flown are recorded in air traffic liability. Passenger revenue is recognized when the underlying service is provided. As of March 31, 2024, the air traffic liability balance was $432.6 million, of which approximately $377.6 million was related to forward bookings, with the remaining $55.0 million related to credit vouchers for future travel.

The normal contract term of passenger tickets is 12 months and passenger revenue associated with future travel will principally be recognized within this time frame. Of the $353.5 million that was recorded in the air traffic liability balance as of December 31, 2023, approximately 72.7 percent was recognized into passenger revenue during the three months ended March 31, 2024.

The Company periodically evaluates the estimated amount of credit vouchers expected to expire unused and any adjustment is removed from air traffic liability and included in passenger revenue in the period in which the evaluation is complete. Estimates of passenger revenue to be recognized from air traffic liability for credit voucher breakage may be subject to variability and differ from historical experience due to the change in contract duration (which applied for vouchers issued in 2020 and in the first half of 2021) and uncertainty regarding demand for future air travel.

Resort Revenue

The Company's resort revenues for the three months ended March 31, 2024 are set forth in the table below:

Three Months Ended March 31,
(in thousands)20242023
Food and beverage10,772 — 
Rooms$9,957 $— 
Other3,158 5 
Total resort revenue$23,887 $5 

Revenue from banquets, golf, retail and spa services are included in other resort revenue. Resort revenue is recognized as the underlying services or goods have been provided. There is typically little to no lag between when the services are performed and when payment is remitted. Large group reservations, conventions, and other event bookings require advance deposits which are recorded as accrued liabilities in the Company's balance sheet until the related services and goods are provided. Guest receivables are recorded in accounts receivable on the Company's balance sheet for room nights stayed prior to payment at checkout. The amounts of advance deposit liabilities and guest ledger receivables were not material at March 31, 2024 and December 31, 2023.

Loyalty redemptions

In relation to the travel component of the Allways Rewards® co-brand credit card contract, the Company has a performance obligation to provide cardholders with points to be used for future travel award redemptions at the airline and resort. Therefore, consideration received related to the travel component is deferred based on its relative selling price and is recognized into passenger revenue and resort revenue when the points are redeemed and the underlying service is provided. Similarly, in relation to the Allways Rewards loyalty program, points earned through the program are deferred based on the stand-alone selling price and recognized into passenger revenue when the points are redeemed and the underlying service is provided.
The following table presents the activity of the point liability for the periods indicated:
Three Months Ended March 31,
(in thousands)20242023
Points balance at January 1$70,813 $56,500 
Points awarded (deferral of revenue)15,923 16,780 
Points redeemed (recognition of revenue)(15,271)(13,647)
Points balance at March 31$71,465 $59,633 
The current portion of the loyalty program liability represents the estimate of revenue to be recognized in the next 12 months based on historical trends, with the remaining balance reflected in noncurrent liabilities expected to be recognized into revenue in periods thereafter.
v3.24.1.u1
Property and Equipment
 3 Months Ended
Mar. 31, 2024
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and Equipment
The following table summarizes the Company's property and equipment as of the dates indicated:
(in thousands)March 31, 2024December 31, 2023
Airline
Flight equipment$3,427,671 $3,346,216 
Computer hardware and software293,403 274,927 
Land and buildings/leasehold improvements64,242 63,863 
Other property and equipment111,077 109,727 
Sunseeker Resort
Land and buildings/leasehold improvements571,002 559,112 
Other property and equipment56,650 53,743 
Construction in progress3,596 4,389 
Total property and equipment4,527,641 4,411,977 
Less accumulated depreciation and amortization(1,004,298)(964,866)
Property and equipment, net$3,523,343 $3,447,111 

As of March 31, 2024, the Company had firm commitments to purchase 50 aircraft which are expected to begin delivering in 2024.

Accrued capital expenditures as of March 31, 2024 and December 31, 2023 were $40.9 million and $71.7 million,respectively.
v3.24.1.u1
Long-Term Debt
 3 Months Ended
Mar. 31, 2024
Debt Disclosure [Abstract]  
Long-Term Debt Long-Term Debt
The following table summarizes the Company's long-term debt and finance lease obligations, net of related costs, as of the dates indicated:
(in thousands)March 31, 2024December 31, 2023
Fixed-rate debt and finance lease obligations due through 2032$1,811,098 $1,834,754 
Variable-rate debt due through 2029437,650 424,900 
Total long-term debt and finance lease obligations, net of related costs2,248,748 2,259,654 
Less current maturities, net of related costs459,171 439,937 
Long-term debt and finance lease obligations, net of current maturities and related costs$1,789,577 $1,819,717 
Weighted average fixed-interest rate on debt6.3%6.3%
Weighted average variable-interest rate on debt7.9%7.9%
Interest Rate(s) Per Annum atBalance as of
(dollars in thousands)Maturity DatesMarch 31, 2024March 31, 2024December 31, 2023
Senior secured notes20277.25%$550,000 $550,000 
Consolidated variable interest entities2024-20292.92%-5.19%126,762 130,650 
Revolving credit facilities2024-20277.92%200,000 200,000 
Debt secured by aircraft, engines, other equipment and real estate2025-20311.87%-8.25%593,606 596,271 
Finance leases2028-20324.44%-7.01%449,044 455,248 
Construction loan agreement20285.75%350,000 350,000 
Total debt$2,269,412 $2,282,169 
Related costs(20,664)(22,515)
Total debt net of related costs$2,248,748 $2,259,654 

Maturities of long term debt as of March 31, 2024, for the next five years and thereafter, in the aggregate, are:

(in thousands)As of March 31, 2024
Remaining in 2024$429,032 
2025180,611 
2026176,151 
2027709,354 
2028328,569 
2029142,531 
Thereafter282,500 
Total debt and finance lease obligations, net of related costs$2,248,748 

Debt Secured by Aircraft

During the three months ended March 31, 2024, the Company received $18.8 million in advances on a pre-delivery payment (PDP) credit facility secured by certain of the Company's Boeing aircraft purchase rights. The notes under the facility bear interest at a floating interest rate based on SOFR and mature on June 30, 2025 or upon delivery of the applicable aircraft.

Other Secured Debt
In March 2024, the Company entered into credit agreements for up to $218.5 million which will be collateralized by new aircraft upon delivery. The loans will bear interest at a variable rate based on 3-month SOFR and are payable in quarterly installments for a term of 12 years. No draws have been made on these financing commitments to date.
v3.24.1.u1
Income Taxes (Notes)
 3 Months Ended
Mar. 31, 2024
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The Company recorded a $0.4 million income tax benefit at a 31.3 percent effective tax rate and an $18.3 million income tax provision at a 24.5 percent effective tax rate for the three months ended March 31, 2024 and 2023, respectively. The effective tax rate for the three months ended March 31, 2024 differed from the statutory federal income tax rate of 21.0 percent primarily due to state income taxes, permanent tax differences, and discrete items. During the quarter, the Company recognized a $0.2 million income tax benefit for discrete items which were related to share based compensation and to an immaterial adjustment to a prior year uncertain tax benefit.

While the Company expects its effective tax rate to be fairly consistent in the near term, it will vary depending on recurring items such as the amount of income earned in each state and the state tax rate applicable to such income. Discrete items during interim periods may also affect the Company's tax rates.
v3.24.1.u1
Fair Value Measurements
 3 Months Ended
Mar. 31, 2024
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
The Company utilizes the market approach to measure the fair value of its financial assets. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets. The assets classified as Level 2 primarily utilize quoted market prices or alternative pricing sources including transactions involving identical or
comparable assets and models utilizing market observable inputs for valuation of these securities. No changes in valuation techniques or inputs occurred during the three months ended March 31, 2024.

Financial instruments measured at fair value on a recurring basis:
As of March 31, 2024As of December 31, 2023
(in thousands)TotalLevel 1Level 2TotalLevel 1Level 2
Cash equivalents   
Commercial paper$45,906 $— $45,906 $19,575 $— $19,575 
Money market funds31,427 31,427 — 33,613 33,613 — 
US Treasury bonds24,746 — 24,746 2,000 — 2,000 
Municipal debt securities20,004 — 20,004 7,848 — 7,848 
Federal agency debt securities12,077 — 12,077 8,201 — 8,201 
Total cash equivalents134,160 31,427 102,733 71,237 33,613 37,624 
Short-term     
Corporate debt securities225,735 — 225,735 210,982 — 210,982 
Commercial paper221,827 — 221,827 237,870 — 237,870 
Federal agency debt securities140,588 — 140,588 194,522 — 194,522 
Municipal debt securities14,013 — 14,013 13,914 — 13,914 
US Treasury Bonds7,298 — 7,298 14,126 — 14,126 
Certificate of deposit7,000 — 7,000 — — — 
Total short-term616,461 — 616,461 671,414 — 671,414 
Long-term      
Corporate debt securities39,054 — 39,054 43,869 — 43,869 
Federal agency debt securities4,745 — 4,745 12,135 — 12,135 
Total long-term43,799 — 43,799 56,004 — 56,004 
Total financial instruments$794,420 $31,427 $762,993 $798,655 $33,613 $765,042 

None of the Company's debt is publicly held and as a result, the Company has determined the estimated fair value of these notes to be Level 3. Certain inputs used to determine fair value are unobservable and, therefore, could be sensitive to changes in inputs. The Company utilizes the discounted cash flow method to estimate the fair value of Level 3 debt.

The carrying value and estimated fair value of long-term debt, excluding finance leases, including current maturities and without reduction for related costs, are as follows:
As of March 31, 2024As of December 31, 2023
(in thousands)Carrying ValueEstimated Fair ValueCarrying ValueEstimated Fair ValueHierarchy Level
Fair Value of Notes Payable$1,820,368 $1,815,856 $1,826,921 $1,815,351 3

Due to their short-term nature, the carrying amounts of cash, restricted cash, accounts receivable and accounts payable approximate fair value.
v3.24.1.u1
Earnings (Loss) per Share
 3 Months Ended
Mar. 31, 2024
Earnings Per Share [Abstract]  
Earnings (Loss) per Share Earnings (Loss) per Share
Basic and diluted earnings (loss) per share are computed pursuant to the two-class method. Under this method, the Company attributes net income (loss) to two classes: common stock and unvested restricted stock. Unvested restricted stock awards granted to employees under the Company’s Long-Term Incentive Plan are considered participating securities as they receive non-forfeitable rights to cash dividends at the same rate as common stock.

Diluted net income per share is calculated using the more dilutive of the two methods. Under both methods, the exercise of employee stock options is assumed using the treasury stock method. The assumption of vesting of restricted stock, however, differs:

1.Assume vesting of restricted stock using the treasury stock method.
2.Assume unvested restricted stock awards are not vested, and allocate earnings to common shares and unvested restricted stock awards using the two-class method.

For the three months ended March 31, 2024, basic and diluted loss per share are the same because of the loss position.

The following table sets forth the computation of net income (loss) per share, on a basic and diluted basis, for the periods indicated (share count and dollar amounts other than per-share amounts in the table are in thousands):
Three Months Ended March 31,
20242023
Basic:  
Net income (loss)$(919)$56,149 
Less income allocated to participating securities(354)(1,254)
Net income (loss) attributable to common stock$(1,273)$54,895 
Earnings (loss) per share, basic$(0.07)$3.09 
Weighted-average shares outstanding17,664 17,766 
Diluted:  
Net income (loss)$(919)$56,149 
Less income allocated to participating securities(354)(1,254)
Net income (loss) attributable to common stock$(1,273)$54,895 
Earnings (loss) per share, diluted$(0.07)$3.09 
Weighted-average shares outstanding17,664 17,766 
Dilutive effect of restricted stock— 104 
Adjusted weighted-average shares outstanding under treasury stock method17,664 17,870 
Participating securities excluded under two-class method— (101)
Adjusted weighted-average shares outstanding under two-class method17,664 17,769 
v3.24.1.u1
Contingencies
 3 Months Ended
Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]  
Contingencies Contingencies
The Company is subject to certain legal and administrative actions it considers routine to its business activities. The Company believes the ultimate outcome of any potential and pending legal or administrative matters will not have a material adverse impact on its financial position, liquidity or results of operations.
v3.24.1.u1
Segments
 3 Months Ended
Mar. 31, 2024
Segment Reporting [Abstract]  
Segments Segments
Operating segments are components of a company for which separate financial and operating information is regularly evaluated and reported to the Chief Operating Decision Maker ("CODM"), and is used to allocate resources and analyze performance. The Company's CODM is the executive leadership team, which reviews information about the Company's two operating segments: Airline and Sunseeker Resort.

Airline Segment

The Airline segment operates as a single business unit and includes all scheduled service air transportation, ancillary air-related products and services, third party products and services, fixed fee contract air transportation and other airline-related revenue. The CODM evaluation includes, but is not limited to, route and flight profitability data, ancillary and third party product and service offering statistics, and fixed fee contract information when making resource allocation decisions with the goal of optimizing consolidated financial results.

Sunseeker Resort Segment

The Sunseeker Resort segment operates as a single business unit and includes hotel rooms and suites for occupancy, group meeting facilities, food and beverage options, the Aileron Golf Course and other Resort amenities. The CODM evaluation includes, but is not limited to, demand for hospitality offerings, occupancy rates, room pricing, food and beverage offerings, other charge points at the Resort and competitive information when making resource allocation decisions with the goal of optimizing consolidated financial results.
Selected information for the Company's segments and the reconciliation to the consolidated financial statement amounts are as follows:
 Three Months Ended March 31, 2024Three Months Ended March 31, 2023
 AirlineSunseekerConsolidatedAirlineSunseekerConsolidated
OPERATING REVENUES:  
Passenger$579,936 $— $579,936 $609,277 $— $609,277 
Third party products33,399 — 33,399 26,037 — 26,037 
Fixed fee contracts18,861 — 18,861 14,117 — 14,117 
Resort and other323 23,887 24,210 251 5 256 
Total operating revenues632,519 23,887 656,406 649,682 5 649,687 
OPERATING EXPENSES:
Salaries and benefits199,508 13,819 213,327 157,521 2,102 159,623 
Aircraft fuel170,087 — 170,087 189,546 — 189,546 
Station operations66,468 — 66,468 61,520 — 61,520 
Depreciation and amortization57,868 5,976 63,844 54,622 58 54,680 
Sales and marketing28,878 1,541 30,419 26,640 288 26,928 
Maintenance and repairs30,278 — 30,278 26,442 — 26,442 
Aircraft lease rentals5,985 — 5,985 7,092 — 7,092 
Other34,315 13,136 47,451 28,711 1,932 30,643 
Special charges, net of recoveries14,915 (1,816)13,099 14 (1,626)(1,612)
Total operating expenses608,302 32,656 640,958 552,108 2,754 554,862 
OPERATING INCOME (LOSS)24,217 (8,769)15,448 97,574 (2,749)94,825 
Interest income(12,241)— (12,241)(10,128)— (10,128)
Interest expense34,737 5,423 40,160 30,343 5,365 35,708 
Capitalized interest(10,859)(326)(11,185)(1,510)(3,670)(5,180)
Capital expenditures122,175 14,004 136,179 92,432 85,620 178,052 
Total assets were as follows as of the dates indicated:
(in thousands)As of March 31, 2024As of December 31, 2023
Airline$4,265,765 $4,213,288 
Sunseeker Resort669,366 656,122 
Consolidated$4,935,131 $4,869,410 
v3.24.1.u1
Subsequent Events
 3 Months Ended
Mar. 31, 2024
Subsequent Events [Abstract]  
Subsequent Events Subsequent EventsOn April 15, 2024, the Company and the Transport Workers Union of America, AFL-CIO Local 577, representing the Company's flight attendants, ratified a new five-year agreement which includes immediate wage increases ranging from 20 to 41.2 percent. In addition to pay increases, the new agreement includes a greater "duty rig," which will increase the amount of time Flight Attendants are paid for being on duty, an improved 401(k) match, and a cap on healthcare cost share increases. The Company will also pay a one-time $10.0 million lump sum signing bonus on May 8, 2024.
v3.24.1.u1
Pay vs Performance Disclosure - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Pay vs Performance Disclosure    
NET INCOME (LOSS) $ (919) $ 56,149
v3.24.1.u1
Insider Trading Arrangements
 3 Months Ended
Mar. 31, 2024
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.24.1.u1
Summary of Significant Accounting Policies - (Policies)
 3 Months Ended
Mar. 31, 2024
Accounting Policies [Abstract]  
Basis of Presentation
Basis of Presentation

The accompanying unaudited consolidated financial statements include the accounts of Allegiant Travel Company (the “Company”) and its majority-owned operating subsidiaries. The Company's investments in unconsolidated affiliates, which are 50 percent or less owned, are accounted for under the equity or cost method, and are insignificant to the consolidated financial statements. All intercompany balances and transactions have been eliminated.

These unaudited consolidated financial statements reflect all normal recurring adjustments which management believes are necessary to present fairly the financial position, results of operations, and cash flows of the Company for the respective periods presented. Certain information and footnote disclosures normally included in the annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") have been omitted pursuant to the rules and regulations of the Securities and Exchange Commission for Form 10-Q. These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements of the Company and notes thereto included in the annual report of the Company on Form 10-K for the year ended December 31, 2023 and filed with the Securities and Exchange Commission.

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities, at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from these estimates.

The Company has reclassified certain prior period amounts to conform to the current period presentation.
v3.24.1.u1
Special Charges (Tables)
 3 Months Ended
Mar. 31, 2024
Unusual or Infrequent Items, or Both [Abstract]  
Summary of Special Charges
The table below summarizes special charges recorded during the three months ended March 31, 2024, and 2023.
Three Months Ended March 31,
(in thousands)20242023
Sunseeker weather and related events$100 $200 
Sunseeker weather and related events, insurance recoveries(1)
(1,916)(1,826)
Accelerated depreciation on airframes identified for early retirement14,915 14 
Total special charges$13,099 $(1,612)

(1) Includes $0.7 million of business interruption insurance recoveries for the three months ended March 31, 2024. No business interruption insurance recoveries were recorded during the three months ended March 31, 2023.
v3.24.1.u1
Revenue Recognition (Tables)
 3 Months Ended
Mar. 31, 2024
Revenue Recognition [Abstract]  
Disaggregation of Revenue
Passenger revenue is the most significant category in the Company's reported operating revenues, as outlined below:
Three Months Ended March 31,
(in thousands)20242023
Scheduled service$289,879 $311,728 
Ancillary air-related charges274,793 283,902 
Loyalty redemptions15,264 13,647 
Total passenger revenue$579,936 $609,277 
The Company's resort revenues for the three months ended March 31, 2024 are set forth in the table below:

Three Months Ended March 31,
(in thousands)20242023
Food and beverage10,772 — 
Rooms$9,957 $— 
Other3,158 5 
Total resort revenue$23,887 $5 
Contract with Customer, Contract Asset, Contract Liability, and Receivable
The following table presents the activity of the point liability for the periods indicated:
Three Months Ended March 31,
(in thousands)20242023
Points balance at January 1$70,813 $56,500 
Points awarded (deferral of revenue)15,923 16,780 
Points redeemed (recognition of revenue)(15,271)(13,647)
Points balance at March 31$71,465 $59,633 
v3.24.1.u1
Property and Equipment (Tables)
 3 Months Ended
Mar. 31, 2024
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
The following table summarizes the Company's property and equipment as of the dates indicated:
(in thousands)March 31, 2024December 31, 2023
Airline
Flight equipment$3,427,671 $3,346,216 
Computer hardware and software293,403 274,927 
Land and buildings/leasehold improvements64,242 63,863 
Other property and equipment111,077 109,727 
Sunseeker Resort
Land and buildings/leasehold improvements571,002 559,112 
Other property and equipment56,650 53,743 
Construction in progress3,596 4,389 
Total property and equipment4,527,641 4,411,977 
Less accumulated depreciation and amortization(1,004,298)(964,866)
Property and equipment, net$3,523,343 $3,447,111 
v3.24.1.u1
Long-Term Debt (Tables)
 3 Months Ended
Mar. 31, 2024
Debt Disclosure [Abstract]  
Summary of Long-Term Debt
The following table summarizes the Company's long-term debt and finance lease obligations, net of related costs, as of the dates indicated:
(in thousands)March 31, 2024December 31, 2023
Fixed-rate debt and finance lease obligations due through 2032$1,811,098 $1,834,754 
Variable-rate debt due through 2029437,650 424,900 
Total long-term debt and finance lease obligations, net of related costs2,248,748 2,259,654 
Less current maturities, net of related costs459,171 439,937 
Long-term debt and finance lease obligations, net of current maturities and related costs$1,789,577 $1,819,717 
Weighted average fixed-interest rate on debt6.3%6.3%
Weighted average variable-interest rate on debt7.9%7.9%
Interest Rate(s) Per Annum atBalance as of
(dollars in thousands)Maturity DatesMarch 31, 2024March 31, 2024December 31, 2023
Senior secured notes20277.25%$550,000 $550,000 
Consolidated variable interest entities2024-20292.92%-5.19%126,762 130,650 
Revolving credit facilities2024-20277.92%200,000 200,000 
Debt secured by aircraft, engines, other equipment and real estate2025-20311.87%-8.25%593,606 596,271 
Finance leases2028-20324.44%-7.01%449,044 455,248 
Construction loan agreement20285.75%350,000 350,000 
Total debt$2,269,412 $2,282,169 
Related costs(20,664)(22,515)
Total debt net of related costs$2,248,748 $2,259,654 
Schedule of Maturities of Long-Term Debt
Maturities of long term debt as of March 31, 2024, for the next five years and thereafter, in the aggregate, are:

(in thousands)As of March 31, 2024
Remaining in 2024$429,032 
2025180,611 
2026176,151 
2027709,354 
2028328,569 
2029142,531 
Thereafter282,500 
Total debt and finance lease obligations, net of related costs$2,248,748 
v3.24.1.u1
Fair Value Measurements (Tables)
 3 Months Ended
Mar. 31, 2024
Fair Value Disclosures [Abstract]  
Assets Measured at Fair Value On a Recurring Basis
Financial instruments measured at fair value on a recurring basis:
As of March 31, 2024As of December 31, 2023
(in thousands)TotalLevel 1Level 2TotalLevel 1Level 2
Cash equivalents   
Commercial paper$45,906 $— $45,906 $19,575 $— $19,575 
Money market funds31,427 31,427 — 33,613 33,613 — 
US Treasury bonds24,746 — 24,746 2,000 — 2,000 
Municipal debt securities20,004 — 20,004 7,848 — 7,848 
Federal agency debt securities12,077 — 12,077 8,201 — 8,201 
Total cash equivalents134,160 31,427 102,733 71,237 33,613 37,624 
Short-term     
Corporate debt securities225,735 — 225,735 210,982 — 210,982 
Commercial paper221,827 — 221,827 237,870 — 237,870 
Federal agency debt securities140,588 — 140,588 194,522 — 194,522 
Municipal debt securities14,013 — 14,013 13,914 — 13,914 
US Treasury Bonds7,298 — 7,298 14,126 — 14,126 
Certificate of deposit7,000 — 7,000 — — — 
Total short-term616,461 — 616,461 671,414 — 671,414 
Long-term      
Corporate debt securities39,054 — 39,054 43,869 — 43,869 
Federal agency debt securities4,745 — 4,745 12,135 — 12,135 
Total long-term43,799 — 43,799 56,004 — 56,004 
Total financial instruments$794,420 $31,427 $762,993 $798,655 $33,613 $765,042 
Fair Value, Liabilities Measured on Recurring Basis
The carrying value and estimated fair value of long-term debt, excluding finance leases, including current maturities and without reduction for related costs, are as follows:
As of March 31, 2024As of December 31, 2023
(in thousands)Carrying ValueEstimated Fair ValueCarrying ValueEstimated Fair ValueHierarchy Level
Fair Value of Notes Payable$1,820,368 $1,815,856 $1,826,921 $1,815,351 3
v3.24.1.u1
Earnings per Share (Tables)
 3 Months Ended
Mar. 31, 2024
Earnings Per Share [Abstract]  
Computation of Net Income Per Share, Basic and Diluted
The following table sets forth the computation of net income (loss) per share, on a basic and diluted basis, for the periods indicated (share count and dollar amounts other than per-share amounts in the table are in thousands):
Three Months Ended March 31,
20242023
Basic:  
Net income (loss)$(919)$56,149 
Less income allocated to participating securities(354)(1,254)
Net income (loss) attributable to common stock$(1,273)$54,895 
Earnings (loss) per share, basic$(0.07)$3.09 
Weighted-average shares outstanding17,664 17,766 
Diluted:  
Net income (loss)$(919)$56,149 
Less income allocated to participating securities(354)(1,254)
Net income (loss) attributable to common stock$(1,273)$54,895 
Earnings (loss) per share, diluted$(0.07)$3.09 
Weighted-average shares outstanding17,664 17,766 
Dilutive effect of restricted stock— 104 
Adjusted weighted-average shares outstanding under treasury stock method17,664 17,870 
Participating securities excluded under two-class method— (101)
Adjusted weighted-average shares outstanding under two-class method17,664 17,769 
v3.24.1.u1
Segments (Tables)
 3 Months Ended
Mar. 31, 2024
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment
Selected information for the Company's segments and the reconciliation to the consolidated financial statement amounts are as follows:
 Three Months Ended March 31, 2024Three Months Ended March 31, 2023
 AirlineSunseekerConsolidatedAirlineSunseekerConsolidated
OPERATING REVENUES:  
Passenger$579,936 $— $579,936 $609,277 $— $609,277 
Third party products33,399 — 33,399 26,037 — 26,037 
Fixed fee contracts18,861 — 18,861 14,117 — 14,117 
Resort and other323 23,887 24,210 251 5 256 
Total operating revenues632,519 23,887 656,406 649,682 5 649,687 
OPERATING EXPENSES:
Salaries and benefits199,508 13,819 213,327 157,521 2,102 159,623 
Aircraft fuel170,087 — 170,087 189,546 — 189,546 
Station operations66,468 — 66,468 61,520 — 61,520 
Depreciation and amortization57,868 5,976 63,844 54,622 58 54,680 
Sales and marketing28,878 1,541 30,419 26,640 288 26,928 
Maintenance and repairs30,278 — 30,278 26,442 — 26,442 
Aircraft lease rentals5,985 — 5,985 7,092 — 7,092 
Other34,315 13,136 47,451 28,711 1,932 30,643 
Special charges, net of recoveries14,915 (1,816)13,099 14 (1,626)(1,612)
Total operating expenses608,302 32,656 640,958 552,108 2,754 554,862 
OPERATING INCOME (LOSS)24,217 (8,769)15,448 97,574 (2,749)94,825 
Interest income(12,241)— (12,241)(10,128)— (10,128)
Interest expense34,737 5,423 40,160 30,343 5,365 35,708 
Capitalized interest(10,859)(326)(11,185)(1,510)(3,670)(5,180)
Capital expenditures122,175 14,004 136,179 92,432 85,620 178,052 
Total assets were as follows as of the dates indicated:
(in thousands)As of March 31, 2024As of December 31, 2023
Airline$4,265,765 $4,213,288 
Sunseeker Resort669,366 656,122 
Consolidated$4,935,131 $4,869,410 
v3.24.1.u1
Special Charges - Narrative (Details)
$ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Sep. 30, 2023
Aircraft
Mar. 31, 2024
USD ($)
Aircraft
Dec. 31, 2023
Aircraft
Unusual or Infrequent Item, or Both [Line Items]      
Number of aircraft retired | Aircraft 21 2 2
Hurricane Ian      
Unusual or Infrequent Item, or Both [Line Items]      
Unusual or infrequent item, or both, loss, gross   $ 78.2  
Unusual or infrequent item, or both, insurance proceeds   $ 52.5  
v3.24.1.u1
Special Charges - Summary of Special Charges (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Unusual or Infrequent Items, or Both [Abstract]    
Sunseeker weather and related events $ 100 $ 200
Sunseeker weather and related events, insurance recoveries(1) (1,916) (1,826)
Accelerated depreciation on airframes identified for early retirement 14,915 14
Total special charges 13,099 $ (1,612)
Proceeds from business interruption insurance $ 700  
v3.24.1.u1
Revenue Recognition - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Disaggregation of Revenue [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax $ 579,936 $ 609,277
Passenger Revenue    
Disaggregation of Revenue [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax 579,936 609,277
Resort Revenue    
Disaggregation of Revenue [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax 23,887 5
Scheduled service | Passenger Revenue    
Disaggregation of Revenue [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax 289,879 311,728
Ancillary air-related charges | Passenger Revenue    
Disaggregation of Revenue [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax 274,793 283,902
Loyalty redemptions | Passenger Revenue    
Disaggregation of Revenue [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax 15,264 13,647
Rooms | Resort Revenue    
Disaggregation of Revenue [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax 9,957 0
Food and beverage | Resort Revenue    
Disaggregation of Revenue [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax 10,772 0
Total resort revenue | Resort Revenue    
Disaggregation of Revenue [Line Items]    
Revenue from Contract with Customer, Excluding Assessed Tax $ 3,158 $ 5
v3.24.1.u1
Revenue Recognition - Narrative (Details) - USD ($)
$ in Thousands, number in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Revenue Recognition [Abstract]    
Contract with Customer, Liability, Current $ 432,561 $ 353,488
Contract with Customer, Liability, Forward Bookings 37760.00%  
Contract with Customer, Liability, Credit Voucher Bookings 5500.00%  
Revenue, Performance Obligation, Description of Timing 12 months  
Air Traffic Liability, Recognized   $ 353,500
v3.24.1.u1
Revenue Recognition - Contract with Customer, Contract Asset, Contract Liability, and Receivable (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Revenue Recognition [Abstract]    
Points balance at January 1 $ 70,813 $ 56,500
Points awarded (deferral of revenue) 15,923 16,780
Points redeemed (recognition of revenue) (15,271) (13,647)
Points balance at March 31 $ 71,465 $ 59,633
v3.24.1.u1
Property and Equipment (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2024
USD ($)
Aircraft
Dec. 31, 2023
USD ($)
Property, Plant and Equipment [Line Items]    
Flight equipment $ 3,427,671 $ 3,346,216
Computer hardware and software 293,403 274,927
Land and buildings/leasehold improvements 64,242 63,863
Other property and equipment 111,077 109,727
Total property and equipment 4,527,641 4,411,977
Less accumulated depreciation and amortization 1,004,298 964,866
Property and equipment, net $ 3,523,343 3,447,111
Number Of Aircraft Committed To Purchase | Aircraft 50  
Capital Expenditures Incurred but Not yet Paid $ 40,900 71,700
Sunseeker Resort    
Property, Plant and Equipment [Line Items]    
Land and buildings/leasehold improvements 571,002 559,112
Other property and equipment 56,650 53,743
Construction in progress $ 3,596 $ 4,389
v3.24.1.u1
Long-Term Debt - Components of Long-Term Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Debt Instrument [Line Items]    
Secured Long-term Debt, Noncurrent $ 2,248,748 $ 2,259,654
Less current maturities 459,171 439,937
Long-term debt and capital leases, net of current maturities and related costs 1,789,577 1,819,717
Finance Lease, Liability 449,044 455,248
Debt and Lease Obligation (20,664) (22,515)
Debt Issuance Costs, Net $ 2,248,748 2,259,654
Minimum [Member]    
Debt Instrument [Line Items]    
Debt instrument, interest rate, stated percentage 4.44%  
Maximum [Member]    
Debt Instrument [Line Items]    
Debt instrument, interest rate, stated percentage 7.01%  
Weighted average fixed-interest rate on debt    
Debt Instrument [Line Items]    
Notes Payable $ 1,811,098 $ 1,834,754
Long-term Debt, Weighted Average Interest Rate, at Point in Time 6.30% 6.30%
Weighted average variable-interest rate on debt    
Debt Instrument [Line Items]    
Notes Payable $ 437,650 $ 424,900
Long-term Debt, Weighted Average Interest Rate, at Point in Time 7.90% 7.90%
Construction Loan Agreement Due 2032    
Debt Instrument [Line Items]    
Long-term debt and capital leases, net of current maturities and related costs $ 350,000 $ 350,000
Debt instrument, interest rate, stated percentage 5.75%  
Revolving Credit Facilities Due 2027 | Revolving Credit Facility    
Debt Instrument [Line Items]    
Long-term debt and capital leases, net of current maturities and related costs $ 200,000 200,000
Debt instrument, interest rate, stated percentage 7.92%  
Senior Secured Notes Due 2027 | Senior Notes    
Debt Instrument [Line Items]    
Long-term debt and capital leases, net of current maturities and related costs $ 550,000 550,000
Senior Secured Notes Due 2027 | Senior Notes | Maximum [Member]    
Debt Instrument [Line Items]    
Debt instrument, interest rate, stated percentage 7.25%  
Consolidated Variable Interest Entities Due 2029    
Debt Instrument [Line Items]    
Long-term debt and capital leases, net of current maturities and related costs $ 126,762 130,650
Consolidated Variable Interest Entities Due 2029 | Minimum [Member]    
Debt Instrument [Line Items]    
Debt instrument, interest rate, stated percentage 2.92%  
Consolidated Variable Interest Entities Due 2029 | Maximum [Member]    
Debt Instrument [Line Items]    
Debt instrument, interest rate, stated percentage 5.19%  
Secured Debt By Aircraft, Engines, Other Equipment And Real Estate | Secured Debt    
Debt Instrument [Line Items]    
Long-term debt and capital leases, net of current maturities and related costs $ 593,606 596,271
Secured Debt By Aircraft, Engines, Other Equipment And Real Estate | Secured Debt | Minimum [Member]    
Debt Instrument [Line Items]    
Debt instrument, interest rate, stated percentage 1.87%  
Secured Debt By Aircraft, Engines, Other Equipment And Real Estate | Secured Debt | Maximum [Member]    
Debt Instrument [Line Items]    
Debt instrument, interest rate, stated percentage 8.25%  
Long-term Debt [Member] | Unsecured Debt [Member]    
Debt Instrument [Line Items]    
Long-term debt and capital leases, net of current maturities and related costs $ 2,269,412 $ 2,282,169
v3.24.1.u1
Long-Term Debt - Summary of Maturities of Long-Term Debt (Details)
$ in Thousands
Mar. 31, 2024
USD ($)
Schedule of Maturities of Long-Term Debt [Abstract]  
Remaining in 2024 $ 429,032
2025 180,611
2026 176,151
2027 709,354
2028 328,569
2029 142,531
Thereafter 282,500
Total debt and finance lease obligations, net of related costs $ 2,248,748
v3.24.1.u1
Long-Term Debt - Narrative (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended
Mar. 31, 2024
Mar. 31, 2024
May 31, 2023
Revolving Credit Facility      
Debt Instrument [Line Items]      
Proceeds from lines of credit   $ 18.8  
Line of Credit | Secured Debt      
Debt Instrument [Line Items]      
Line of credit facility, maximum borrowing capacity     $ 218.5
Long-Term Debt, Term 12 years 12 years  
Line of Credit | Secured Debt | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Term 3 months    
v3.24.1.u1
Income Taxes (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Income Tax Disclosure [Abstract]    
Income Tax Expense (Benefit) $ (418) $ 18,269
Effective Income Tax Rate Reconciliation, Percent 31.30% 24.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00%  
Income Tax Expense (Benefit), Discrete Items $ 200  
v3.24.1.u1
Fair Value Measurements (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale $ 794,420 $ 798,655
Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 31,427 33,613
Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 762,993 765,042
Cash Equivalents    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 134,160 71,237
Cash Equivalents | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 31,427 33,613
Cash Equivalents | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 102,733 37,624
Short-Term Investments    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 616,461 671,414
Short-Term Investments | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 0 0
Short-Term Investments | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 616,461 671,414
Long Term Investments    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 43,799 56,004
Long Term Investments | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 0 0
Long Term Investments | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 43,799 56,004
Money market funds | Cash Equivalents    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 31,427 33,613
Money market funds | Cash Equivalents | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 31,427 33,613
Money market funds | Cash Equivalents | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 0 0
Commercial paper | Cash Equivalents    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 45,906 19,575
Commercial paper | Cash Equivalents | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 0 0
Commercial paper | Cash Equivalents | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 45,906 19,575
Commercial paper | Short-Term Investments    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 221,827 237,870
Commercial paper | Short-Term Investments | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 0 0
Commercial paper | Short-Term Investments | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 221,827 237,870
Municipal debt securities | Cash Equivalents    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 20,004 7,848
Municipal debt securities | Cash Equivalents | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 0 0
Municipal debt securities | Cash Equivalents | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 20,004 7,848
Municipal debt securities | Short-Term Investments    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 14,013 13,914
Municipal debt securities | Short-Term Investments | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 0 0
Municipal debt securities | Short-Term Investments | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 14,013 13,914
US Treasury Bonds    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 7,298 14,126
US Treasury Bonds | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 0 0
US Treasury Bonds | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 7,298 14,126
US Treasury Bonds | Cash Equivalents    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 24,746 2,000
US Treasury Bonds | Cash Equivalents | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 0 0
US Treasury Bonds | Cash Equivalents | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 24,746 2,000
Corporate debt securities    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 39,054 43,869
Corporate debt securities | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 0 0
Corporate debt securities | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 39,054 43,869
Corporate debt securities | Short-Term Investments    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 225,735 210,982
Corporate debt securities | Short-Term Investments | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 0 0
Corporate debt securities | Short-Term Investments | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 225,735 210,982
Federal agency debt securities    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 12,077 8,201
Debt Securities, Available-for-Sale 4,745 12,135
Federal agency debt securities | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 0 0
Debt Securities, Available-for-Sale 0 0
Federal agency debt securities | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Cash Equivalents 12,077 8,201
Debt Securities, Available-for-Sale 4,745 12,135
Federal agency debt securities | Short-Term Investments    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 140,588 194,522
Federal agency debt securities | Short-Term Investments | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 0 0
Federal agency debt securities | Short-Term Investments | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 140,588 194,522
Certificates of Deposit    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 7,000 0
Certificates of Deposit | Fair Value, Inputs, Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale 0 0
Certificates of Deposit | Fair Value, Inputs, Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Securities, Available-for-Sale $ 7,000 $ 0
v3.24.1.u1
Fair Value Measurements Estimated Fair Value of Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Secured Long-term Debt, Noncurrent $ 2,248,748 $ 2,259,654
Non-Publicly Held Debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Secured Long-term Debt, Noncurrent 1,820,368 1,826,921
Non-Publicly Held Debt | Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt, Fair Value $ 1,815,856 $ 1,815,351
v3.24.1.u1
Earnings (Loss) per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Basic:    
Net income (loss) $ (919) $ 56,149
Less income allocated to participating securities (354) (1,254)
Net income (loss) attributable to common stock $ (1,273) $ 54,895
Net income per share, basic (in dollars per share) $ (0.07) $ 3.09
Weighted-average shares outstanding (in shares) 17,664 17,766
Diluted:    
Net income (loss) $ (919) $ 56,149
Less income allocated to participating securities (354) (1,254)
Net income (loss) attributable to common stock $ (1,273) $ 54,895
Earnings (loss) per share, diluted (in dollars per share) $ (0.07) $ 3.09
Weighted-average shares outstanding ( in shares) 17,664 17,766
Dilutive effect of stock options and restricted stock (in shares) 0 104
Adjusted weighted-average shares outstanding under treasury stock method (in shares) 17,664 17,870
Participating securities excluded under two-class method (in shares) 0 (101)
Adjusted weighted-average shares outstanding under two-class method (in shares) 17,664 17,769
v3.24.1.u1
Segments - Narrative (Details)
 3 Months Ended
Mar. 31, 2024
segment
Segment Reporting [Abstract]  
Number of Operating Segments 2
v3.24.1.u1
Segments - Schedule of Segment Reporting Information, by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Segment Reporting Information [Line Items]      
Passenger $ 579,936 $ 609,277  
Third party products 33,399 26,037  
Fixed fee contracts 18,861 14,117  
Resort and other 24,210 256  
Total operating revenues 656,406 649,687  
Salaries and benefits 213,327 159,623  
Aircraft fuel 170,087 189,546  
Station operations 66,468 61,520  
Depreciation and amortization 63,844 54,680  
Selling and Marketing Expense 30,419 26,928  
Maintenance and repairs 30,278 26,442  
Aircraft lease rentals 5,985 7,092  
Other 47,451 30,643  
Special charges, net of recoveries 13,099 (1,612)  
Total operating expenses 640,958 554,862  
OPERATING INCOME 15,448 94,825  
Interest (income) (12,241) (10,128)  
Interest expense 40,160 35,708  
Capitalized interest (11,185) (5,180)  
Capital expenditures 136,179 178,052  
Assets 4,935,131   $ 4,869,410
Airline      
Segment Reporting Information [Line Items]      
Passenger 579,936 609,277  
Third party products 33,399 26,037  
Fixed fee contracts 18,861 14,117  
Resort and other 323 251  
Total operating revenues 632,519 649,682  
Salaries and benefits 199,508 157,521  
Aircraft fuel 170,087 189,546  
Station operations 66,468 61,520  
Depreciation and amortization 57,868 54,622  
Selling and Marketing Expense 28,878 26,640  
Maintenance and repairs 30,278 26,442  
Aircraft lease rentals 5,985 7,092  
Other 34,315 28,711  
Special charges, net of recoveries 14,915 14  
Total operating expenses 608,302 552,108  
OPERATING INCOME 24,217 97,574  
Interest (income) (12,241) (10,128)  
Interest expense 34,737 30,343  
Capitalized interest (10,859) (1,510)  
Capital expenditures 122,175 92,432  
Assets 4,265,765   4,213,288
Sunseeker Resort      
Segment Reporting Information [Line Items]      
Passenger 0 0  
Third party products 0 0  
Fixed fee contracts 0 0  
Resort and other 23,887 5  
Total operating revenues 23,887 5  
Salaries and benefits 13,819 2,102  
Aircraft fuel 0 0  
Station operations 0 0  
Depreciation and amortization 5,976 58  
Selling and Marketing Expense 1,541 288  
Maintenance and repairs 0 0  
Aircraft lease rentals 0 0  
Other 13,136 1,932  
Special charges, net of recoveries (1,816) (1,626)  
Total operating expenses 32,656 2,754  
OPERATING INCOME (8,769) (2,749)  
Interest (income) 0 0  
Interest expense 5,423 5,365  
Capitalized interest (326) (3,670)  
Capital expenditures 14,004 $ 85,620  
Assets $ 669,366   $ 656,122
v3.24.1.u1
Subsequent Events (Details) - USD ($)
$ in Millions
Apr. 15, 2024
Mar. 31, 2024
Minimum [Member]    
Subsequent Event [Line Items]    
Salary And Wages, Increase Wage Percentage   20.00%
Subsequent Event    
Subsequent Event [Line Items]    
Salary And Wage, Wage Increase Agreement Term 5 years  
Salary And Wages, Increase Wage Percentage 41.20%  
Salary And Wages, Lump Sum Bonus Payment $ 10  
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