Avianca Costa Rica on 17 October 1945 by Pan American World Airways, the Costa Rican government and Costa Rican private interests. It started operations on 1 June 1946 and was designated the national carrier in 1949. Its domestic network was transferred to its wholly owned subsidiary Sansa in September 1959. LACSA operated the Douglas DC-6B four-engined piston airliner from 1960 until 1976 on their regular passenger, and eventually freight, scheduled flights to Miami International Airport. The airline introduced the first of their British Aircraft Corporation BAC One-Eleven twin-engined jet airliners onto their Caribbean passenger route network in April 1967. The airline also operated
Darwin Airline company. In early 2014, Etihad Regional leased four ATR 72-500s from Nordic Aviation Capital to expand routes from Geneva. From the end of March 2014, the airline withdrew its Ancona-Roma Fiumicino and Trapani-Roma Fiumicino routes, as a result of cabotage restrictions, which prevent Swiss aviation companies from operating domestic flights in the European Union. It was previously possible for Darwin Airline to fly these routes thanks to a derogation from the Italian Civil Aviation Authority, however, this was not renewed. In January 2014, Darwin Airline cancelled its Aosta-Roma Fiumicino route before it had commenced; a result of the same cabotage