Cancún International Airport (Spanish: Aeropuerto Internacional de Cancún) (IATA: CUN, ICAO: MMUN) serves as the primary gateway for the Cancún Metropolitan Area in Quintana Roo, the Mexican Caribbean, Riviera Maya, and Yucatán Peninsula. Operating as a hub for Viva Aerobus and a focus city for Volaris and Magnicharters, it facilitates flights to over 100 cities across 30 countries in the Americas and Europe. The airport is managed by Grupo Aeroportuario del Sureste (ASUR) and is the easternmost airport in Mexico.

It is the largest airport in Mexico and Latin America in terms of international passengers, representing 35% of all international passengers in the country. Cancun Airport is a major destination served by most U.S. and Canadian mainline airlines from all their hubs and focus cities, making it the airport outside the United States with the highest number of passengers to and from the United States.

Ranked as the 43rd busiest airport in the world, Cancun Airport is Mexico's second busiest, following Mexico City International Airport. Regionally, it stands as Latin America's fourth busiest and North America's 24th busiest airport as of 2023. In 2022, it handled 30,342,961 passengers, increasing to 32,750,411 passengers in 2023.

In addition to its commercial operations, Cancun Airport supports various activities in general and executive aviation, flight training, and intensive air charter services. Cozumel and Tulum international airports serve as alternative options in the Cancun area, contributing to the region's overall aviation infrastructure.