San Marcos Regional Airport

San Marcos Regional Airport is an airport located in Austin Texas, US. The ICAO code is KHYI, used by air traffic control and pilots for flight planning.

The airport operates in the America/Chicago timezone. When planning flights to or from KHYI, use our flight duration calculator to account for timezone differences, especially for international travel.

San Marcos Regional Airport sits at an elevation of 595 feet (181 meters) above sea level.

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