Hilton Head Airport covers 131 acres (53 ha) at an elevation of 19 feet (6 m). Its one runway, 3/21, is 5,000 by 100 feet (1,524 x 30 m). The runway was extended; the airport is hoping to attract more air service. Other safety improvements have been completed, including the relocation of Taxiway A by 100 feet, added airfield drainage components, removal of trees in the flight path and the revision of the general aviation parking area. The runway extension was completed in the summer of 2018.