Western Airlines (IATA: WA, ICAO: WAL, Callsign: Western) was a large airline based in California, with operations throughout the Western United States, and hubs at Los Angeles International Airport, Salt Lake City International Airport, and the former Stapleton International Airport in Denver. Before it ceased operations it was headquartered by Los Angeles International Airport in Los Angeles. On 9 September 1986 Western Airlines was purchased by Delta Air Lines, and was fully merged into that airline on 1 April 1987.