George Bush Intercontinental Airport

George Bush Intercontinental Airport carries the IATA code IAH — the three letters printed on boarding passes and baggage tags — and the ICAO code KIAH, used in flight plans and by air traffic control. It serves Houston, United States.

IATA codes are assigned by the International Air Transport Association for passenger-facing use; the four-letter ICAO code encodes region and country and belongs to the operational side of aviation.