Phoenix Sky Harbor International Airport (IATA: PHX, ICAO: KPHX, FAA LID: PHX) is a civil-military public airport 3 miles (5 km) southeast of downtown Phoenix, in Maricopa County, Arizona, United States. It is Arizona's largest and busiest airport, and among the largest commercial airports in the United States.
In 2012, the airport served 40,448,932 passengers, making it one of the top 10 busiest in the United States by passenger count. It handles more than 1,200 aircraft operations a day, 100,000 passengers and more than 800 tons of cargo. Federal Aviation Administration (FAA) records show the airport had 20,169,926 commercial passenger boardings (enplanements) in calendar year 2012 and 20,211,799 in 2011.
The airport serves as a hub for American Airlines' merger partner, US Airways and is American's fifth-largest and primary western hub. Sky Harbor also serves as one of the largest focus cities for Southwest Airlines.