San Cristóbal de las Casas National Airport (Spanish: Aeropuerto Nacional de San Cristóbal de las Casas) formerly (IATA: SZT, ICAO: MMSC) was an airport located 18 kilometres (11 mi) from the city of San Cristóbal de las Casas in the state of Chiapas, Mexico. It was operated by Aeropuertos y Servicios Auxiliares (English: Airports and Auxiliary Services), a corporation of the federal government.