China United Airlines (KN) is a low-cost carrier headquartered in Beijing. It uses Beijing Nanyuan Airport (NAY) as its hub, and is the airport's sole passenger airline. China United offers scheduled passenger flights to 20 domestic destinations. These include Chengdu Shuangliu International Airport (CTU), Guangzhou Baiyun International Airport (CAN) and Shanghai Hongqiao International Airport (SHA). The airline's fleet of 36 aircraft includes Airbus A319-100, Boeing 737-700, Boeing 737-800 and Tupolev Tu-154M planes.