Air Inter (Lignes Aériennes Intérieures) was a semi-public French domestic airline. Before its merger with Air France, the airline was headquartered in Paray-Vieille-Poste, Essonne. Earlier in its life, it was headquartered in the 1st arrondissement of Paris.Air Inter was incorporated on 12 November 1954. It operated its first commercial flight between Paris and Strasbourg on 16 March 1958.