Finnair has entered into a codeshare agreement with China Southern starting on 1 June.
The cooperation will include the Finnair route between Guangzhou and Helsinki, and selected China Southern destinations in China.
The new codeshare partnership adds five new destinations to Finnair's network in China, and customers will be able to connect with China Southern from Guangzhou to destinations such as Changsha, Chongqing and Hangzhou.
In addition, China Southern code will be added to Finnair flights from Helsinki to several popular destinations in Europe such as Amsterdam, Copenhagen and Stockholm.
This move marks Finnair's third agreement with Chinese airlines after its deals with Air China and Shanghai-based Juneyao Air.
Finnair also recently introduced a year-round service to Ghanzhou - a route which started off only in seasonal periods.