Summerville Airport (ICAO: KDYB, FAA LID: DYB) is a county-owned, public-use airport located five nautical miles (6 mi, 9 km) northwest of the central business district of Summerville, a city in Dorchester County, South Carolina, United States. It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a general aviation facility.