🇺🇸 San Marcos Regional Airport

The San Marcos Regional Airport (KHYI) is a public-use, general aviation reliever airport located in San Marcos, Texas, strategically positioned between Austin and San Antonio. It is owned by the City of San Marcos.

Type of facility and operations: KHYI is open to the public and operates with an airport traffic control tower, which is staffed from 0700-2100. It offers fuel services including 100LL and Jet A+. The airport provides major airframe and powerplant services, as well as hangars and tiedowns for parking. It is designated as a reliever airport for both Austin-Bergstrom and San Antonio International Airports.

Notable features or history: Originally developed as Gary Air Field, a World War II Army Air Corps training base in the 1940s, the airport was deeded to the City of San Marcos in 1966. It initially had four runways, with three asphalt runways remaining today, each over a mile in length and designed to minimize crosswind operations. The airport is home to the Central Texas Wing of the Commemorative Air Force, which includes a museum and vintage aircraft.

Current status: As of June 13, 2026, the airport is operational, though there is an active construction notice. The current weather conditions report scattered clouds with a temperature of 82°F. The airport is actively promoting itself as a rapidly emerging center for business, technology, and mobility in Central Texas.

*Sources researched: flysanmarcos.com, nfdc.faa.gov, airnav.com, tx-sanmarcoscity.civicplus.com*