6-K

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON D.C. 20549

FORM 6-K

Report ofForeign Private Issuer

Pursuant to Rule 13a-16 or15d-16

of the Securities Exchange Act of 1934

September 13, 2022

CHINASOUTHERN 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  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes  ☐            No  ☒

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): N/A

China Southern Airlines Company Limited (the “Company”) published the following announcement on September 9, 2022 on the Hong Kong Stock Exchange’s website at:

https://www1.hkexnews.hk/listedco/listconews/sehk/2022/0909/2022090900809.pdf, in relation to the waiver from strict compliance with Rule 14.66(10) and Appendix 1B paragraph 43(2)(c) to the Listing Rules.

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.

CHINA SOUTHERN AIRLINES COMPANY LIMITED

Date: September 13, 2022

EX-99.1

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 norepresentation 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 limitedliability)

(Stock Code: 1055)

ANNOUNCEMENT

WAIVERFROM STRICT COMPLIANCE WITH RULE 14.66(10)

AND

APPENDIX 1B PARAGRAPH 43(2)(c) TO THE LISTING RULES

Reference is made to the circular (the “Circular”) of China Southern Airlines Company Limited (the “Company”) dated 25 August 2022 in relation to the major transaction in relation to purchase of aircraft by the Company (the “Transaction”). Unless otherwise defined, capitalized terms shall have the same meaning as those defined in the Circular.

As disclosed in the Circular, the Company has applied to the Stock Exchange for a waiver from strict compliance with Rule 14.66(10) and Appendix 1B paragraph 43(2)(c) to the Listing Rules (the “Waiver”), so that only the redacted version of the Agreement will be published on the websites of the Stock Exchange and the Company for a reasonable period of time (not less than 14 days). The Stock Exchange has recently granted the Waiver to the Company to allow the Company to redact certain confidential materials contained in the Agreement pursuant to a request for confidential treatment by Airbus S.A.S., including information relating to the actual consideration for the Purchase, specification of the aircraft purchased, delivery details, training services and maintenance support arrangement details, contact details of the parties to the Agreement and other confidential commercial arrangements (the “Redacted Information”). The Redacted Information is either of minor importance for the Transaction or commercial sensitive information strictly personal and exclusive to each party to the Agreement and generally recognized as customized and confidential information in the aviation industry, the disclosure of which will be competitively harmful to the Company. The material terms stipulated under the Agreement have been summarized and disclosed in the Circular, from which the Shareholders and the investing public will be able to have sufficient information about the Transaction and assess the impact of the Transaction so that the Shareholders and the investing public would make an informed voting decision on the Transaction. In addition, the Shareholders and the investing public are provided with sufficient information regarding the reasons for and benefits of the Transaction.

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Therefore, the redacted version of the Agreement is not likely to mislead the Shareholders and the investing public with regard to the facts and circumstances, knowledge of which is essential for the informed assessment of the Transaction. Accordingly, only the redacted version of the Agreement will be available on the websites of the Stock Exchange and the Company as a document on display, which has been published by the Company on 9 September 2022 on display for a period of 14 days.

Guangzhou, the People’s Republic of China

9 September 2022

As at the date of this announcement, theDirectors include Ma Xu Lun and Han Wen Sheng as executive Directors; and Liu Chang Le, Gu Hui Zhong, Guo Wei and Yan Andrew Y as independent non-executive Directors.

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