Red Oak Municipal Airport (ICAO: KRDK, FAA LID: RDK) is a city-owned public-use airport located two nautical miles (3.7 km) west of the central business district of Red Oak, a city in Montgomery County, Iowa, United States.

[1] According to the FAA's National Plan of Integrated Airport Systems for 2009–2013, it is categorized as a general aviation facility.

[3] Red Oak Municipal Airport covers an area of 202 acres (82 ha) at an elevation of 1,045 feet (319 m) above mean sea level.

[1] For the 12-month period ending August 8, 2007, the airport had 11,550 general aviationaircraft operations, an average of 31 per day.

At that time there were 34 aircraft based at this airport: 79% single-engine, 3% multi-engine and 18% ultralight.