Luis Munoz Marin International Airport

Luis Munoz Marin International Airport carries the IATA code SJU — the three letters printed on boarding passes and baggage tags — and the ICAO code TJSJ, used in flight plans and by air traffic control. It serves San Juan, Puerto Rico.

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.