San Marcos Municipal Airport (KHYI) is located just outside San Marcos off of Highway 21. 

 Use this airport diagram for navigation on the airport during your stay.

The following list contains links to bussinesses located on the airport:

McKee Avionics

Gafford Aero 512.396.3323

Berry Aviation (FBO)

Southwest Texas Aviation (Mooney, Cirrus, Diamond Service Center)

Texas State Aviation (Flight School)

Blue Skies Aviation

Tejas Aero Services (Aircraft Painting and Interior)

Commemerative Air Force