At Philadelphia International Airport (PHL), American Airlines operates out of multiple terminals, as it is the airport's largest hub carrier. Most domestic and international departures are handled in Terminals A-West, A-East, B, and C. Terminal A-West is generally reserved for long-haul international flights and some domestic departures, while Terminals B and C are the primary hubs for domestic "trunk" routes. Additionally, American Eagle (regional) flights often operate out of Terminal F, which is located at the far end of the airport and is connected to the main terminals via a shuttle bus. Because American spans almost half the airport, it is essential to check the American Airlines app or the airport's digital display boards as soon as you arrive, as your gate could be quite a long walk from the security checkpoint. There are multiple Admirals Club locations spread across these terminals to accommodate the high volume of connecting passengers.