| Crystal Lake Airport | |
| Faa: | 5M5 |
| Type: | Public use |
| Owner: | Peterson Farms |
| City-Served: | Decatur, Arkansas |
| Elevation-F: | 1,177 |
| Coordinates: | 36.3436°N -94.4447°W |
| Pushpin Map: | USA Arkansas |
| Pushpin Relief: | yes |
| Pushpin Mapsize: | 200 |
| Pushpin Map Caption: | Location of airport in Arkansas |
| Pushpin Label: | 5M5 |
| Pushpin Label Position: | right |
| R1-Number: | 13/31 |
| R1-Length-F: | 3,863 |
| R1-Surface: | Asphalt |
| Stat-Year: | 2010 |
| Stat1-Header: | Aircraft operations |
| Stat1-Data: | 750 |
| Stat2-Header: | Based aircraft |
| Stat2-Data: | 3 |
| Footnotes: | Source: Federal Aviation Administration[1] |
Crystal Lake Airport is a privately owned, public use airport located two nautical miles (4 km) northeast of the central business district of Decatur, a city in Benton County, Arkansas, United States.
Crystal Lake Airport covers an area of 10 acres (4 ha) at an elevation of 1,177 feet (359 m) above mean sea level. It has one runway designated 13/31 with an asphalt surface measuring 3,863 by 75 feet (1,177 x 23 m).
For the 12-month period ending March 31, 2010, the airport had 750 general aviation aircraft operations, an average of 62 per month. At that time there were 8 aircraft based at this airport, all single-engine.