Hainan Airlines Company Limited is an airline based in Haikou, Hainan, People's Republic of China. It is a privately-owned air group and the fourth-largest airline of China in terms of fleet size. It operates scheduled domestic and international services on 500 routes from Hainan and nine locations on the mainland, as well as charter services. Its main base is Haikou Meilan International Airport, with hubs at Beijing Capital International Airport, Xi'an Xianyang International Airport, Taiyuan Wusu Airport and Urumqi Diwopu International Airport.