Windham Airport (ICAO: KIJD, FAA LID: IJD) is a public airport located three miles (5 km) northeast of the central business district of Willimantic, a city in Windham County, Connecticut, United States.

[1] It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a local general aviation facility.

[2] Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, Windham Airport is assigned IJD by the FAA but has no designation from the IATA.

[1] For the 12-month period ending October 1, 2005, the airport had 30,690 aircraft operations, an average of 84 per day: 98% general aviation, 2% air taxi and <1% military.

In 2005, there were 67 aircraft based at this airport: 93% single engine and 7% multi-engine.