San Marcos Municipal Airport - HYI

Overview & Services

The San Marcos Municipal Airport (HYI) is a public airport located in San Marcos, Texas, serving the surrounding areas with general aviation services. The airport operates from a single runway, designated as 17/35, which is 6,331 feet long and 100 feet wide, made of asphalt. Facilities at the airport include a terminal building, hangars, and fueling services, as well as maintenance and repair shops. The airport is equipped with a variety of navigational aids, including an Automated Weather Observing System (AWOS) and a non-directional beacon (NDB). The San Marcos Municipal Airport is home to several flight schools, charter operators, and aircraft maintenance providers, supporting a range of aviation activities. With its strategic location and amenities, the airport plays a vital role in supporting the local economy and providing access to air transportation for the region.