At Philadelphia International Airport (PHL), Terminal A-West is the primary terminal for international arrivals and departures. This terminal is a world-class facility that handles the majority of long-haul international flights, particularly those operated by American Airlines, as well as foreign flag carriers like British Airways or Lufthansa. It features its own Federal Inspection Station (FIS) for customs and immigration. Terminal A-East also handles some international traffic, but A-West is the modern "international gateway" of the airport. In 2026, the terminals are all connected airside, meaning you can walk between them without exiting security, but if you are arriving from abroad and not pre-cleared, you will be funneled through the A-West customs hall before being released into the main airport area.