Calgary International Airport, branded as YYC Calgary International Airport, is an international airport that serves the city of Calgary, Alberta, Canada. It is located approximately 17 kilometres (11 mi) northeast of downtown and covers an area of 20.82 square kilometres. With 18.5 million passengers in 2023 and 124,108 aircraft movements in 2021, Calgary International is the busiest airport in Alberta and the fourth-busiest in Canada by passenger traffic. This airport is served by the Calgary International Airport Emergency Response Service for aircraft rescue and firefighting (ARFF) protection. The region's petroleum and tourism industries have helped foster growth at the airport, which has nonstop flights to an array of destinations in North and Central America, Europe, and Asia. Calgary serves as the headquarters and primary hub for WestJet.

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.