Singapore Changi Airport, commonly known as Changi Airport, is a major international airport that serves Singapore, and is one of the largest transportation hubs in Asia. More than 100 airlines operate from the airport, with flights to destinations in Asia, Oceania, Africa, Europe, the Middle East, and North America.

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.