St. John's International Airport is in Newfoundland and Labrador, Canada. It is located 3 nautical miles northwest of St. John's, Newfoundland and Labrador and serves the St. John's metropolitan area and the Avalon Peninsula. The airport is part of the National Airports System, and is operated by St. John's International Airport Authority Inc.

An IATA airport code, also known as an IATA location identifier, IATA station code, or simply a location identifier, is a three-letter geocode designating many airports and metropolitan areas around the world, defined by the International Air Transport Association (IATA). The characters prominently displayed on baggage tags attached at airport check-in desks are an example of a way these codes are used.