High Quality Content by WIKIPEDIA articles! Orlando International Airport (IATA: MCO, ICAO: KMCO, FAA LID: MCO) is a major international airport located 6 nmi (11 km) southeast of the central business district of Orlando. It is the second busiest airport in Florida, after Miami International Airport. It is the 13th busiest airport in the United States and the 29th busiest airport in the world by passenger traffic.