Cairns International Airport

Cairns International Airport carries the IATA code CNS — the three letters printed on boarding passes and baggage tags — and the ICAO code YBCS, used in flight plans and by air traffic control. It serves Cairns, Australia.

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.