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
Jazz (airline) jackets from its aircraft to lower fuel costs. According to the airline, passengers are to use floating seat cushions in the event of an emergency over water. The airline also stated that the probability of a water landing on the regional airline routes was almost zero, as no operation over great bodies of water occurs except for the Great Lakes and the Gulf of St. Lawrence, and that in all circumstances, the airline always remains within from land, as stipulated in the law, which removes the obligation from carrying any flotation devices. In April 2010, Jazz Aviation LP had reached