Plymouth Municipal Airport (IATA: PLY[2], FAA LID: C65) is a public use airport located two nautical miles (4 km) north of the central business district of Plymouth, a city in Marshall County, Indiana, United States.

[3] Plymouth Municipal Airport covers an area of 192 acres (78 ha) at an elevation of 800 feet (244 m) above mean sea level.

It has one runway designated 10/28 with an asphalt surface measuring 4,400 by 60 feet (1,341 x 18 m).

[1] For the 12-month period ending December 31, 2009, the airport had 5,830 aircraft operations, an average of 15 per day: 80% general aviation and 20% air taxi.

At that time there were 16 aircraft based at this airport: 94% single-engine and 6% jet.