Proteus Airlines was a French regional airline with its head offices in Saint-Apollinaire, Côte-d'Or, France,[1] near Dijon, and in Saint-Étienne.[2]
The airline was originally known as Proteus Air System. In May 1996 it began scheduled services under its new name. In August 1997 the airline signed a franchise agreement with Air France. In October 1999 Proteus acquired another regional airline, Flandre Air.[3] On 30 March 2001 Proteus, Flandre, and Regional Airlines merged into Régional Compagnie Aérienne Européenne.[2]