Boulder Airport
3U9 · Boulder, Montana · Jefferson County · map
Boulder Airport is a public-use airport owned by Twn of Boulder & Jefferson CO, 2 miles south of Boulder, Montana, 4,968 feet above sea level. Its one runway, 11/29, is 3,675 feet of grass.
The airport
- Codes
- FAA 3U9
- Kind
- Airport · open to the public · publicly owned
- Owner
- Twn of Boulder & Jefferson CO
- Elevation
- 4,968 feet above sea level
- Control tower
- No control tower
- Attended
- unattended
- Repairs
- airframe: none; engine: none
- Parking
- tiedown
- On the chart
- Great Falls sectional
- Magnetic variation
- 17E
- In the FAA's files since
- July 1963
Runway
Drawn to scale from the FAA's runway positions, north up. Not for navigation.
| Runway | Length × width | Surface | Lights |
|---|---|---|---|
| 11/29 | 3,675 × 72 ft | Grass, fair |
Radio frequencies
| Common traffic advisory (CTAF) | 122.9 |
Wind map live wind over the area, from Windy.com
Colours show wind speed, the moving lines its direction; drag the time bar for the coming days. Map and forecast by Windy.com.
Aircraft registered in Boulder from the FAA register
3 aircraft are registered to owners in Boulder, Montana: 3 piston singles. Not every one of them is based at this airport; the based-aircraft count above is the FAA's figure for this airport alone.
Individuals are counted, never named. All aircraft registered in Montana.
Accidents and incidents at or near this airport NTSB records
No NTSB accident or incident records name this airport.
Nearby within 30 nautical miles
The FAA's remarks as written in the airport file
- No snow removal
- Runway 11/29 thlds and edges marked with white cones
- Has 1% to 3% uphill gradient from runway 29 end to runway 11 end.
- -2 feet drainage ditch +1 feet berm west side of runway full length; 43 feet from runway 11/29 centerline.
Facts from the FAA's airport file effective October 1, 2026, written out in plain English; weather from the National Weather Service's aviation weather service; registered aircraft from the FAA register as of October 5, 2026; accidents from the NTSB's public database. Owners are shown only when they are an organisation; no person is named. Check the official sources before a flight: this page is for understanding an airport, not for planning one.