August 2022) An airport terminal is a building at an airport where passengers transfer between ground transportation and the facilities that allow them to board and disembark from an aircraft.

An airport terminal is the primary building or complex where passengers transition between land transport and the aircraft. It is the hub for all ground-based passenger activities, including check-in, baggage drop, security screening, and immigration. Large airports like London Heathrow or JFK are divided into multiple terminals (Terminal 1, 2, 3, etc.), often categorized by the specific airlines or alliances they host. Once you pass through security, you move into the "airside" portion of the terminal, which contains the departure gates, duty-free shops, and lounges. It is important to distinguish between a "terminal" and a "concourse"; the terminal is the main building with the ticket counters, while the concourse is the long pier or arm where the actual boarding gates are located. In 2026, many modern terminals are designed as "multi-modal" hubs, integrating high-speed rail stations directly into the terminal basement to make the transition from city center to aircraft cabin as seamless as possible.