Ilopango International Airport (IATA: ILS, ICAO: MSSS) is an airport located on the eastern part of the city of San Salvador, El Salvador, once serving the city as its international airport until 1980 when it was replaced by the larger and more modern El Salvador International Airport, located about 50 km south of the city. Currently, Ilopango is used for military, air taxi, and charter aviation only. It also holds the annual Ilopango Air Show. The airport is also home to the National Aviation Museum (Museo Nacional de Aviación) of San Salvador, which is housed in the old terminal building.