This is a list of airlines by foundation date, founded before December 31, 1930.

The date of the first airline service may differ from the foundation date. Bold names indicate that the airline is still in operation.

Airline	Established	Ceased operations	Notes
DELAG	November 16, 1909	March 21, 1935	The world's first airline in revenue service. Operated Zeppelin airships. Merged with Deutsche Zeppelin Reederei (DZR) in 1935, which continued transatlantic flights until the Hindenburg disaster in 1937. Company dissolved in 1940.
Aero Rt.	December 22, 1910	1920	Merged with Magyar Aeroforgalmi Rt (MAEFORT)
St. Petersburg-Tampa Airboat Line	1913	May 5, 1914	First winged airline. See Thomas Reilly, Jannus: An American Flyer
Aircraft Transport and Travel	October 5, 1916	1921	Services started 25 August 1919; first scheduled daily international commercial air service, London to Paris. A subsidiary of Airco, its assets were used to create Daimler Airway. Despite numerous takeovers and mergers, British Airways can trace part of its legacy back to Aircraft Transport and Travel.
Chalk's Ocean Airways	1917	2007	Started scheduled service between Florida and the Bahamas in February 1919; Became Chalk's International Airlines.
Deutsche Luft-Reederei	December 1917	1923	Services started February 5, 1919. Became part of Deutscher Aero Lloyd in 1923, merged into Deutsche Luft Hansa in 1926. Founding member of International Air Traffic Association in 1919.
Det Norske Luftfartsrederi	1918	1921	Founding member of IATA
Det Danske Luftfartselskab	October 29, 1918	1951	Services started August 7, 1920. Part of SAS since 1946.
Category: Airlines by year of establishment References