Orlando International Airport (IATA: MCO, ICAO: KMCO, FAA LID: MCO)[4] is a primary international airport that is located 6 miles (9.7 km) southeast of Downtown Orlando, Florida. In 2021, it handled 19,618,838 passengers, making it the busiest airport in the state and seventh busiest airport in the United States. The airport code MCO stands for the airport's former name, McCoy Air Force Base, a Strategic Air Command (SAC) installation, that was closed in 1975 as part of a general military drawdown following the end of the Vietnam War.