Houlton International Airport (IATA: HUL, ICAO: KHUL, FAA LID: HUL) is a public-use airport located in the town of Houlton in Aroostook County, Maine, United States, near the town border of Hodgdon, Maine, also on the border of New Brunswick, Canada.

Prior to the United States' entry into World War II, American army pilots flew planes to the base.

They could not fly the planes directly into Canada, a member of the British Commonwealth, because that would violate the official United States position of neutrality.

Local farmers used their tractors to tow the planes into Canada, where the Canadians closed the Woodstock highway so that aircraft could use it as a runway.

[2] Houlton International Airport covers an area of 1,615 acres (654 ha) and has two runways: This article incorporates public domain material from the Air Force Historical Research Agency