Phoenix Sky Harbor International Airport (IATA: PHX, ICAO: KPHX) is the primary international airport serving Phoenix, Arizona, and the surrounding Valley of the Sun metropolitan area. Located approximately 3 miles east of downtown Phoenix, PHX is owned and operated by the City of Phoenix Aviation Department. The airport has been serving the Southwest since 1928 and is consistently ranked among America’s Friendliest Airports.
PHX is a major hub for American Airlines and Southwest Airlines. The airport operates two active passenger terminals: Terminal 3 and Terminal 4. Terminal 3, which opened in 1979, primarily handles domestic flights along with pre-cleared Canadian arrivals, serving 25 gates used by airlines including Delta, United, Alaska, Frontier, Spirit, and JetBlue. Terminal 4 is the airport’s main international gateway and the hub for American and Southwest Airlines, with 92 gates handling international departures and arrivals alongside major domestic operations.
In 2025, Phoenix Sky Harbor International Airport served more than 51.6 million passengers, only the second time in its history that the airport surpassed the 50 million passenger mark. Terminal 4 handled the majority of traffic with 36,725,589 passengers, while Terminal 3 served 12,079,085 passengers. The airport recorded 487,142 total aircraft operations in 2025.
The PHX Sky Train, an all-electric automated people mover, connects both terminals with the Rental Car Center, East Economy Parking, the 24th Street Station, and the Valley Metro Rail system. The airport is committed to sustainability and has received the Airport Carbon Accreditation Level 4 “Transformation” rating from Airports Council International.