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
Iberia (airline) in pension asset values and financial returns from these assets may increase the size of the pension deficit". , the airline had over 18,000 employees. Iberia has a 9.49% stake in low-cost carrier Vueling which is based near Barcelona, with parent company IAG owning the remaining 90.51%. This was done to ensure that IAG does not have 100% of the shares in Vueling, but that the shares are split between its divisions. Iberia also has a 0.95% share in Royal Air Maroc. Iberia is allied with American Airlines, Qantas, Avianca, British Airways, and Grupo TACA, and on 1 September 1999,