León/Bajio International Airport (Spanish: Aeropuerto Internacional de León/Bajío); officially Aeropuerto Internacional de Guanajuato (Guanajuato International Airport) (IATA: BJX, ICAO: MMLO), is an international airport situated in Silao, Guanajuato, Mexico. It is the main international airport serving the Greater León Metropolitan Area and the State of Guanajuato, which is home to a population of 6 million residents, including the cities of Celaya, Guanajuato, Irapuato, Salamanca, and San Miguel de Allende. In addition to offering domestic flights within Mexico, it serves as a gateway for international travel, connecting Central Mexico to various destinations in the United States. It serves as a focus city for Volaris and supports flight training, cargo, logistics and general aviation activities.

Operated by Grupo Aeroportuario del Pacífico (GAP), Bajío Airport derives its name from the cultural region "El Bajío" (the lowland), which is situated within the central Mexican plateau. It ranks as the ninth-busiest airport in Mexico in terms of passenger numbers and the seventh-busiest for international passenger traffic. In 2022, the airport served 2,603,200 passengers, a figure that increased to 3,220,800 passengers in 2023, marking a substantial 23.7% growth compared to the previous year and becoming the ninth airport in Mexico to surpass three million passengers in a calendar year.