Philadelphia International Airport (IATA: PHL, ICAO: KPHL, FAA LID: PHL) is the primary airport serving Philadelphia, Pennsylvania. The airport served 9. 8 million passengers annually in 2021, making it the 21st busiest airport in the United States. The airport is located 7 miles (11 km) from the city's downtown area and has 22 airlines that offer nearly 500 daily departures to more than 130 destinations worldwide. Philadelphia International Airport is the largest airport serving the state of Pe... Philadelphia International Airport (IATA: PHL, ICAO: KPHL, FAA LID: PHL) is the primary airport serving Philadelphia, Pennsylvania. The airport served 9. 8 million passengers annually in 2021, making it the 21st busiest airport in the United States. The airport is located 7 miles (11 km) from the city's downtown area and has 22 airlines that offer nearly 500 daily departures to more than 130 destinations worldwide. Philadelphia International Airport is the largest airport serving the state of Pennsylvania. It is the fifth-largest hub for American Airlines and its primary hub for the Northeastern United States, as well as its primary European and transatlantic gateway. Additionally, the airport is a regional cargo hub for UPS Airlines and a focus city for the ultra low-cost airline Frontier Airlines. The airport has service to cities in the United States, Canada, the Caribbean, Latin America, Europe, and the Middle East.