San Marcos Regional Airport

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San Marcos Regional Airport
San Marcos Municipal Airport logo.png
USGS aerial photo - 28 January 1995
Airport typePublic
Owner/OperatorCity of San Marcos
ServesSan Marcos, Texas
LocationSan Marcos, Caldwell County, Texas, USA
Elevation AMSL597 ft / 182 m
Coordinates29°53′34″N 097°51′47″W / 29.89278°N 97.86306°W / 29.89278; -97.86306
HYI is located in Texas
Location of airport in Texas / United States
HYI is located in the United States
HYI (the United States)
Direction Length Surface
ft m
8/26 6,330 1,929 Asphalt
13/31 5,603 1,708 Asphalt
17/35 5,213 1,589 Asphalt
Statistics (2015)
Aircraft operations46,422
Based aircraft108

San Marcos Regional Airport (ICAO: KHYI, FAA LID: HYI) 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.[1] It is located east of the border of Caldwell County and Hays County.[2] 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.[3]



Gary Army Airfield


Organized 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.[4]

Facilities and aircraft[edit]

San Marcos Regional Airport covers an area of 1,393 acres (564 ha) at an elevation of 597 feet (182 m) above mean sea level. It has three asphalt paved runways: 8/26 is 6,330 by 100 feet (1,929 x 30 m), 13/31 is 5,603 by 150 feet (1,708 x 46 m) and 17/35 is 5,213 by 100 feet (1,589 x 30 m).[1]

For the 12-month period ending September 30, 2015, the airport had 46,422 aircraft operations, an average of 127 per day: 98% general aviation, 2% military and <1% air taxi. At that time there were 108 aircraft based at this airport: 76% single-engine, 20% multi-engine and 4% jet.[1]

See also[edit]


  1. ^ a b c d FAA Airport Master Record for HYI (Form 5010 PDF), effective 2009-05-07.
  2. ^ MapQuest: San Marcos Municipal Airport
  3. ^ Great Circle Mapper: KHYI - San Marcos, Texas
  4. ^ "Pancakes Barbecue and Aviation". AOPA Pilot: 39. June 2014.

External links[edit]