Sultan Aji Muhammad Sulaiman Sepinggan International Airport

Sultan Aji Muhammad Sulaiman Sepinggan International Airport carries the IATA code BPN — the three letters printed on boarding passes and baggage tags — and the ICAO code WALL, used in flight plans and by air traffic control. It serves Balikpapan, Indonesia.

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.