Date Established1954SubjectAirlinesDescriptionBonanza Air Lines was a United States airline based primarily on the West Coast. It was established in 1945 with headquarters initially in Las Vegas, Nevada. In 1966, the company headquarters relocated to Phoenix, Arizona. In 1968, Bonanza effectively ceased to exist when it merged with Pacific Air Lines and West Coast Airlines to form Air West which became Hughes Airwest in 1970.