廈門航空
Following two years of negotiations which had started in August 2004, China Southern in late June 2006 signed an agreement with SkyTeam, one of the three global airline alliances, formally pledging itself to the improvement of standards with the aim of its eventual joining. According to the agreement, the airline committed to the upgrade of handling services, facilities and training of at least 75% of its staff to SkyTeam's standards. On 15 November 2007, China Southern officially joined SkyTeam, becoming the eleventh carrier to join the grouping and the first mainland Chinese carrier to join an airline alliance. The welcoming ceremony was attended by high-ranking Chinese government and SkyTeam corporate officials and was held at the Great Hall of the People. The carrier's integration with the alliance continued with its entry into SkyTeam Cargo in November 2010, and its joint-venture carrier Xiamen Airlines' formal joining in November 2012. With China Eastern's ascension in June 2011, SkyTeam furthered its leading presence on the mainland Chinese market; the remaining Big Three carrier, Air China, is a member of Star Alliance.