Sullivan County Airport (IATA: SIV, ICAO: KSIV, FAA LID: SIV) is a county-owned public-use airport located three nautical miles (6 km) northwest of the central business district of Sullivan, a city in Sullivan County, Indiana, United States. It is included in the FAA's National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a "general aviation" facility.
It is one of the smallest airports in the country.
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