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

December 14, 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 December 13, 2022 on the Hong Kong Stock Exchange’s website at:

https://www1.hkexnews.hk/listedco/listconews/sehk/2022/1213/2022121300479.pdf, in relation to the second notice of the extraordinary general meeting.

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: December 14, 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 notice, 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 notice.

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

(Stock Code: 1055)

SECOND NOTICE OF THE EXTRAORDINARY GENERAL MEETING

References are made to the notice of China Southern Airlines Company Limited (the “Company”) dated 11 November 2022 and the supplemental notice of the Company dated 1 December 2022 in relation to the 2022 First Extraordinary General Meeting (the “EGM”) to be held on Wednesday, 28 December 2022. Unless otherwise indicated, capitalised terms used in this notice have the same meanings as those defined in the circular of the Company dated 1 December 2022.

Pursuant to the relevant provisions of the Mandatory Provisions for Articles of Association of Companies to be Listed Overseas and the Articles of Association, since the number of the Shares with voting rights represented by the Shareholders who intend to attend the EGM does not reach half of the total number of the Shares with voting rights of the Company as at 8 December 2022, the Company hereby re-announces to the Shareholders that the EGM will be held at No. 3301 Conference Room, 33/F, China Southern Air Building, No. 68 Qixin Road, Baiyun District, Guangzhou, Guangdong Province, the PRC at 2:00 p.m. on Wednesday, 28 December 2022 for the following purposes.

AS SPECIAL RESOLUTIONS

To consider and, if thought fit, to approve the following resolutions as special resolutions:

1. The resolution regarding the purchase of 96 Airbus A320NEO family aircraft by the Company from 2024 to 2027.

2. The resolution regarding the purchase of 40 Airbus A320NEO family aircraft by Xiamen Airlines Company Limited.

AS ORDINARY RESOLUTIONS

To consider and, if thought fit, approve the following resolutions as ordinary resolutions:

3. The resolution regarding the renewal of finance and lease service framework agreement entered into between the Company and China Southern Air Leasing Company Limited.

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4. The resolution regarding the renewal of financial services framework agreement entered into between the Company and China Southern Airlines Group Finance Company Limited.

5.00 The resolution regarding the election of executive Directors for the 9th session of the Board of the Company:

5.01 The resolution regarding the election of Mr. Luo Lai Jun as an executive Director for the 9th session of the Board of the Company; and

6.00 The resolution regarding the election of independent non-executive Directors for the 9th session of the Board of the Company:

6.01 The resolution regarding the election of Mr. Cai Hong Ping as an independent non-executive Director for the 9th session of the Board of the Company.

(“Accumulative voting” willbe used in respect of all the sub-resolutions of Resolutions No. 5.00 and No. 6.00.)

In the case that the holders of H Shares or their proxies choose to attend the meeting in person, they must comply with the policies and requirements regarding the containment of COVID-19 pandemic and adopt proper personal preventive measures.

Guangzhou, the People’s Republic of China

13 December 2022

As at the date of this notice, thedirectors include Ma Xu Lun and Han Wen Sheng as executive directors; and Liu Chang Le, Gu Hui Zhong and Guo Wei as independent non-executive directors.

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