Keystone Heights Airport (FAA LID: 42J), is a public use airport located 3 miles north of Keystone Heights, Florida in Clay and Bradford counties.

Owned by the Keystone Heights Airport Authority, this airport is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a general aviation facility.

The airport is adjacent to Camp Blanding, the Florida National Guard Reservation and "Fly through History" Military Museum and Memorial Park. The museum at Camp Blanding is dedicated to the World War II units that trained there during the early 1940s.