Cheongju International Airport/Cheongju Air Base (K-59/G-513)

Cheongju International Airport/Cheongju Air Base (K-59/G-513) carries the IATA code CJJ — the three letters printed on boarding passes and baggage tags — and the ICAO code RKTU, used in flight plans and by air traffic control. It serves Cheongju, South Korea.

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.