Alternative TitleCrossair, Business Flyers Basel AG, Swiss International Air LinesDate Established1975SubjectAirlinesDescriptionCrossair Ltd. Co. for Regional European Air Transport, commonly seen as Crossair, was a Swiss regional airline headquartered on the grounds of EuroAirport Basel-Mulhouse-Freiburg in Saint-Louis, Haut-Rhin, France, near Basel, Switzerland. Established in 1975 as Business Flyers Basel AG, it rebranded in 2002 to become Swiss International Air Lines after taking over most of the assets of Swissair.