Terminal A
Primarily United domestic flights.
George Bush Intercontinental Airport (IAH) terminal guide
Houston, Texas KIAH #15 US airport by passengers
How IAH is laid out and how to move between buildings.
Terminals at IAH
Terminal B
United Airlines domestic flights.
Terminal C
The main United terminal, with both domestic and international flights.
Terminal D
International flights, including many non-United airlines, and the international arrivals facility.
Terminal E
United international and domestic flights.
Moving between terminals
The Skyway is a free train that runs between the terminals, outside security. The Subway, an underground train, connects terminals inside security, so connecting passengers can usually change terminals without leaving the secure area. Follow the signs.
Reviewed October 8, 2026. Confirm details on the official airport website. Spotted a change?
Frequently asked questions
How do I change terminals?
Use the Skyway outside security, or the Subway inside security.