China Northwest Airlines (WH) was an airline based in China. It was a subsidiary of China Eastern Airlines and operated flights primarily in Northwestern China. The airline was established in 1949 and ceased operations in 2002 when it merged with China Eastern Airlines. China Northwest Airlines operated domestic and international flights, serving destinations such as Beijing, Xi'an, Urumqi, and Hong Kong. The airline had a fleet of various aircraft types, including Boeing 737 and McDonnell Douglas MD-82.