Mexico City International Airport (Spanish: Aeropuerto Internacional de la Ciudad de México, AICM); officially Aeropuerto Internacional Benito Juárez (Benito Juárez International Airport) (IATA: MEX, ICAO: MMMX) is the primary international airport serving Greater Mexico City. It is the busiest airport in Mexico, also ranking as the 49th-busiest in the world, third-busiest in Latin America, and 15th-busiest in North America as of 2025, based on passenger traffic. The airport is served by more than 25 airlines, with flights to over 100 destinations across Mexico, the Americas, Europe, the Middle East, and Asia.

As the primary hub for Mexico's flag carrier, Aeroméxico, Mexico City Airport functions as a SkyTeam hub. Additionally, it serves as a hub for Volaris and Viva, and a focus city for Magnicharters. The facility comprises two passenger terminals and two runways. It accommodates entities such as Mexican Airspace Navigation Services, the Mexican Federal Civil Aviation Agency, and an Air Force Base. It is owned by the Mexican Navy and operated by Grupo Aeroportuario de la Ciudad de México. It was named after the 19th-century president Benito Juárez.

Part of Mexico City's airport system, which also includes Toluca International Airport and Felipe Ángeles International Airport, the Mexico City International Airport operates at full capacity.