Moontown Airport (FAA LID: 3M5) is a privately owned public-use airport located seven nautical miles (13 km) east of the central business district of Huntsville, a city in Madison County, Alabama, United States.

[1] It is 16 miles (26 km) east of Huntsville International Airport (HSV).

Moontown Airport covers an area of 17 acres (6.9 ha) at an elevation of 650 feet (198 m) above mean sea level.

[1] For the 12-month period ending April 22, 2009, the airport had 15,784 general aviation aircraft operations, an average of 43 per day.

At that time there were 96 aircraft based at this airport: 86% single-engine, 2% multi-engine, 10% glider and 1% ultralight.