Red Oak Municipal Airport (KRDK) is a public-use general aviation airport located in Red Oak, Iowa, in the southwestern part of the state. It serves private pilots, small charter operations, and local aviation needs for the surrounding Montgomery County region. The airport has no scheduled commercial airline service and is primarily used for personal and business aviation. It is owned and operated by the City of Red Oak and serves as an important local transportation asset for the rural community. As a general aviation facility, Red Oak Municipal does not have a passenger terminal in the commercial sense, but it provides basic services including fuel and aircraft tie-down facilities for transient and based aircraft.