Piarco International Airport

Piarco International Airport carries the IATA code POS — the three letters printed on boarding passes and baggage tags — and the ICAO code TTPP, used in flight plans and by air traffic control. It serves Port of Spain, Trinidad and Tobago.

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.