Mariscal Sucre International Airport is an international airport serving Quito, Ecuador. It is the busiest airport in Ecuador. It is located in the Tababela parish, about 18 kilometres (11 mi) east of Quito, and because of its location it is also colloquially known as Tababela Airport. The airport currently serves as the main hub for Avianca Ecuador and the largest hub for LATAM Ecuador. It also served as the main hub for TAME, Ecuador's flag-carrier, before the airline was liquidated by the Ecuadorian government in 2020. The airport opened in February 2013 and replaced the 53-year old airport of the same name. The airport is named after independence leader Antonio José de Sucre. It was the first 5-star airport in the Western Hemisphere as rated by Skytrax.

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.