Colstrip, Montana
M46 Colstrip
Colstrip (M46) is a non-towered, public-use airport in Colstrip, Montana, at 3,427.6 ft MSL. Its runway is 06/24 (5,100 by 75 ft, asphalt). CTAF 122.7.
FAA NASR data effective Oct 29, 2026. Not for navigation; verify with current FAA charts and the Chart Supplement.
Airport
At a glance
- Identifiers
- FAA M46
- Location
- Colstrip, Montana (Rosebud County). 3 NM SW of the city center
- Elevation
- 3,427.6 ft MSL
- Position
- 45.8528° N, 106.7093° W
- Control tower
- No, non-towered
- Sectional chart
- Billings
- Magnetic variation
- 13° E (1995)
- Ownership
- Publicly owned, open to the public
- Attendance
- ON CALL
1 runway
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 06/24 | 5,100 × 75 ft | Asphalt, good condition | Medium intensity |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 06 | Not stated | 2-light PAPI, left | None listed | None listed | Not listed |
| 24 | Not stated | 2-light PAPI, left | None listed | None listed | Not listed |
VHF
Frequencies
- CTAF
- 122.7
- UNICOM
- 122.7
Weather station
- AWOS-3PT M46
- 118.525
Before you go
Brief M46 in Ascent EFB.
Current weather, NOTAMs and the airport diagram for Colstrip, in the app on iPhone and iPad.
Not for navigation. Verify with current FAA charts and the Chart Supplement before flight.
Source: FAA NASR 28-day subscription, cycle effective Oct 29, 2026. Airport data changes every 28 days and NOTAMs can override it at any time.