| Boulder Junction Airport | |
| Icao: | KBDJ |
| Faa: | BDJ |
| Type: | Public |
| Owner: | Town of Boulder Junction |
| City-Served: | Boulder Junction, Wisconsin |
| Timezone: | CST |
| Summer: | CDT |
| Elevation-F: | 1,662 |
| Coordinates: | 46.1369°N -89.6475°W |
| Pushpin Map: | USA Wisconsin#USA |
| Pushpin Relief: | yes |
| Pushpin Map Caption: | Location of airport in Wisconsin |
| Pushpin Label: | BDJ |
| Pushpin Label Position: | bottom |
| R1-Number: | 5/23 |
| R1-Length-F: | 3,821 |
| R1-Surface: | Turf |
| R2-Number: | 16/34 |
| R2-Length-F: | 3,214 |
| R2-Surface: | Turf |
| Stat1-Header: | Aircraft operations (2023) |
| Stat1-Data: | 450 |
| Stat2-Header: | Based aircraft (2024) |
| Stat2-Data: | 0 |
| Footnotes: | Sources: FAA,[1] Town of Boulder Junction |
Boulder Junction Airport is a public use airport located two nautical miles (4 km) north of the central business district of Boulder Junction, a town in Vilas County, Wisconsin, United States. It is owned by the Town of Boulder Junction.[2]
Although many U.S. airports use the same three-letter location identifier for the FAA and IATA, this facility is assigned BDJ by the FAA but has no designation from the IATA[3] (which assigned BDJ to Syamsudin Noor Airport in Banjarmasin, South Kalimantan, Indonesia).[4]
Boulder Junction Airport covers an area of 40 acres (16 ha) at an elevation of 1,662 feet (507 m) above mean sea level. It has two runways with turf surfaces: 5/23 is 3,821 by 165 feet (1,165 x 50 m) and 16/34 is 3,214 by 160 feet (980 x 49 m).
For the 12-month period ending August 10, 2023, the airport had 450 aircraft operations, an average of 38 per month: 89% general aviation and 11% air taxi. In July 2024, there were no aircraft based at this airport.