Collins-Flege Airpark (ICAO: 77OH) is a small, privately owned general aviation facility located in Mason, Ohio, a suburb within Warren County northeast of Cincinnati. The airpark serves private pilots and light aircraft operators in the greater Cincinnati metropolitan area. As a private-use airpark, it does not accommodate commercial airline service and is not open to the general public without prior permission. It provides basic facilities for small aircraft operations typical of private airparks in the region.