Phoenix Sky Harbor International Airport (IATA: PHX, ICAO: KPHX, FAA LID: PHX) is a civil–military public airport 3 miles (2.6 nmi; 4.8 km) east 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 2021, PHX was the 8th-busiest airport in the United States and 11th-busiest in the world.
The airport serves as a hub for American Airlines and a base for Southwest Airlines.