ZNH China Southern Airlines Co Ltd

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

September 18, 2023

CHINA SOUTHERN AIRLINES COMPANY LIMITED

68 Qi Xin Road

Guangzhou, 510403

People’s Republic of China

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F  ☒            Form 40-F  ☐

China Southern Airlines Company Limited (the “Company”) published the following announcement on September 15, 2023 on the Hong Kong Stock Exchange’s website at:

https://www1.hkexnews.hk/listedco/listconews/sehk/2023/0915/2023091500782.pdf, in relation to the key operating data of the Company and its subsidiaries for August 2023.

The announcement in English is included as an exhibit to this Form 6-K.

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.

Date: September 18, 2023

Exhibit 99.1

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

(a joint stock limited company incorporated in the People’s Republic of China with limited liability)

(Stock Code: 1055)

ANNOUNCEMENT ON KEY OPERATING DATA

This announcement is made based on the operating data for August 2023 of China Southern Airlines Company Limited (the “Company”) and its subsidiaries (collectively, the “Group”) to be published on the Shanghai Stock Exchange, and pursuant to Rules 13.09 and 13.10B of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (the “Listing Rules”) and the Inside Information Provisions (as defined in the Listing Rules) under Part XIVA of the Securities and Futures Ordinance (Chapter 571 of the Laws of Hong Kong).

In August 2023, passenger capacity (measured by available seat kilometres (“ASK”)) of the Group increased by 71.42% as compared with the same period last year (a year-on-year (“YoY”) basis), of which, passenger capacity for domestic routes, regional routes and international routes increased by 48.56%, 805.68% and 612.97%, respectively, as compared with the same period last year. Compared with the same period last year, passenger traffic (measured by revenue passenger kilometres (“RPK”)) increased by 101.19%, of which, passenger traffic for domestic routes, regional routes and international routes increased by 71.96%, 1254.59% and 834.45%, respectively, as compared with the same period last year. The passenger load factor was 80.89%, representing an increase of 11.97 percentage points as compared with the same period last year, of which, the passenger load factor for domestic routes, regional routes and international routes increased by 10.88, 27.83 and 20.26 percentage points, respectively, as compared with the same period last year.

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In terms of cargo operations, in August 2023, cargo capacity (measured by available tonne kilometers (“ATK”) - Cargo and Mail) increased by 33.42% as compared with the same period last year. Cargo and mail traffic (measured by revenue tonne kilometres (“RTK”) - Cargo and Mail) increased by 8.20% as compared with the same period last year. The cargo and mail load factor was 46.55%, representing a decrease of 10.85 percentage points as compared with the same period last year.

In August 2023, the Group has newly launched the following major route: Guangzhou – Kashgar – Guangzhou (being three flights a week).

In August 2023, the Group introduced five aircrafts (including one A320NEO aircraft, two A321NEO aircrafts and two ARJ21 aircrafts), and disposed of one A330-200 aircraft. As of the end of August 2023, the Group operated a fleet of 901 commercial aircrafts as set out below:

KEY OPERATING DATA OF AUGUST 2023

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Notes:

The key operating data above was calculated based on the internal preliminary statistics of the Group, which may be subsequently adjusted or differ from the data disclosed in the relevant periodic reports. Investors are hereby reminded of the risks which may result from inappropriate reliance upon or utilization of the information given above.

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Guangzhou, the People’s Republic of China

15 September 2023

As at the date of this announcement, the Directors include Ma Xu Lun, Han Wen Sheng and Luo Lai Jun as executive Directors; and Pansy Catilina Chiu King Ho, Gu Hui Zhong, Guo Wei and Cai Hong Ping as independent non-executive Directors.

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