León/Bajio International Airport; officially Aeropuerto Internacional de Guanajuato, 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.