Juan Santamaría International Airport (Spanish: Aeropuerto Internacional Juan Santamaría) (IATA: SJO, ICAO: MROC) is the primary airport serving San José, the capital of Costa Rica. The airport is located in the city of Alajuela, 20 km (12 miles) west of downtown San José. It is named after Costa Rica's national hero, Juan Santamaría, a courageous drummer boy who died in 1856 defending his country against forces led by US-American filibuster William Walker. The airport is a hub for Avianca Costa Rica, Costa Rica Green Airways, Sansa Airlines and Volaris Costa Rica, and a focus city for Copa Airlines. It was the country's only international gateway for many years, but nowadays there is also an international airport in Liberia, Guanacaste. Both airports have direct flights to North and Central America and Europe, with the difference that Juan Santamaría International Airport also serves cities in South America and the Caribbean. Juan Santamaría International Airport was once the busiest airport in Central America, but currently it is ranked second after Tocumen International Airport in Panamá. In 2016, Juan Santamaría International Airport received 4.6 million passengers (both international and domestic). In 2011, the airport was named the 3rd Best Airport in Latin America - Caribbean from the Airport Service Quality Awards by Airports Council International.