City of Colorado Springs Municipal Airport

City of Colorado Springs Municipal Airport carries the IATA code COS — the three letters printed on boarding passes and baggage tags — and the ICAO code KCOS, used in flight plans and by air traffic control. It serves Colorado Springs, 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.