The Boeing 707 is an American, long-range, narrow-body airliner, the first jetliner developed and produced by Boeing Commercial Airplanes.Developed from the Boeing 367-80 prototype first flown in 1954, the initial 707-120 first flew on December 20, 1957.Pan American World Airways began regular 707 service on October 26, 1958.With versions produced until 1979, the 707 was a swept wing, quadjet with podded engines. Its larger fuselage cross-section allowed six-abreast economy seating, retained in the later 720, 727, 737, and 757 models.