Memphis International Airport (IATA: MEM, ICAO: KMEM, FAA LID: MEM) is a civil–military airport located seven miles (11 km) southeast of downtown Memphis in Shelby County, Tennessee, United States. It is the primary international airport serving Memphis. It covers 3,900 acres (1,600 ha) and has four runways. It is home to the FedEx Express global hub. Nonstop FedEx destinations from Memphis include cities across the continental United States, Canada, Europe, the Middle East, Asia, and South America. The airport averages over 80 passenger flights per day. The Memphis Air National Guard Base is located at the airport and houses the 164th Airlift Wing of the Tennessee Air National Guard, which operates C-17 Globemaster III transport aircraft.