Augusta Municipal Airport (FAA LID: 3AU) is located approximately 5 miles (8.0 km) west of Augusta in Butler County, Kansas, United States,[1] on the south side of US-54/US-400 highway.

The airport covers 140 acres (57 ha); its one runway, 18/36, is 4,199 x 60 ft (1,280 x 18 m) asphalt.

[1] In the year ending June 30, 2015 the airport had 36,000 general aviation aircraft operations, average 99 per day.

105 aircraft are based at this airport in 2015: 85% single-engine and 15% multi-engine with one jet and four helicopters.

[1] The airport has seven independent T-Hangar buildings, each holding up to ten aircraft.