Clinton Municipal Airport (IATA: CWI, ICAO: KCWI, FAA LID: CWI) is seven miles southwest of Clinton, in Clinton County, Iowa. The FAA's National Plan of Integrated Airport Systems (2017-2021) categorizes it as a general aviation airport.

Clinton had scheduled airline flights from 1951-52 until 1975: Braniff until 1955, then Ozark. There was still commercial air service to Clinton into the mid-1980s. The Official Airline Guide in February 1985 showed a total of five weekday departures to O'Hare International in Chicago; Three via American Central and two via Great Lakes. Scheduled passenger service to Clinton was discontinued by the late 1980s.