San Marcos Regional Airport

San Marcos Regional Airport is a public use airport located in Caldwell County, Texas, United States. It is four nautical miles (7 km) east of the central business district of San Marcos, a city that is mostly in Hays County. The airport is owned by the City of San Marcos and operated by Texas Aviation Partners. It is located east of the border of Caldwell County and Hays County. Before it was operated as a civilian airport it was known as Gary Air Force Base.Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned HYI by the FAA but has no designation from the IATA.HistoryMilitaryGary Army AirfieldCivilianOrganized San Marcans fought to save the base, and on November 20, 1964, President Lyndon B. Johnson announced in a speech at his alma mater, Southwest Texas State University, that the abandoned Camp Gary would be the site of a new federal vocational training facility called Job Corps. Today it's known as the Gary Job Corps Center, the largest in the nation.In 2014, the airport was selected to be the location for the Aircraft Owners and Pilots Association's regional fly-in.