Haikou Meilan International Airport

Haikou Meilan International Airport carries the IATA code HAK — the three letters printed on boarding passes and baggage tags — and the ICAO code ZJHK, used in flight plans and by air traffic control. It serves Haikou (Meilan), China.

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.