Airlines disestablished in 1991

1927–2025 airline in the United States, former primary international carrier

Interflug GmbH (; ) was the national airline of East Germany (officially the “German Democratic Republic”) from 1963 to 1991. Based in East Berlin, it operated scheduled and chartered flights to European and intercontinental destinations out of its hub at Berlin Schönefeld Airport, focusing on Comecon countries. Interflug also had significant crop dusting operations. Following German reunification, the company was liquidated.

1926–1991 American airline

Defunct flag carrier of Somalia, 1964-1991

former Belgian airline

1978–1991 British airline

right|250px|thumb|Alisarda 1973 logo

Jagson international ltd

defunct Chicago-based passenger airline, from 1976 to 1991

NetherLines B.V. was a commuter airline that was a subsidiary of Nedlloyd. It merged with NLM CityHopper in 1991 to form KLM Cityhopper.

Defunct Dutch commuter airline

Turkish airline