Fond du Lac County Airport (IATA: FLD, ICAO: KFLD, FAA LID: FLD) is a county-owned public-use airport located 1 mile (2 km) west of the central business district of Fond du Lac, Wisconsin, a city in Fond du Lac County, Wisconsin, United States. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2021–2025, in which it is categorized as a regional general aviation facility. The airport is home to EAA chapter 572.