Thompson Falls, Montana
KTHM Thompson Falls
Thompson Falls (KTHM) is a non-towered, public-use airport in Thompson Falls, Montana, at 2,467.1 ft MSL. Its runway is 08/26 (4,200 by 75 ft, asphalt). CTAF 122.9.
FAA NASR data effective Oct 29, 2026. Not for navigation; verify with current FAA charts and the Chart Supplement.
Airport
At a glance
- Identifiers
- ICAO KTHM, FAA THM
- Location
- Thompson Falls, Montana (Sanders County). 3 NM SE of the city center
- Elevation
- 2,467.1 ft MSL
- Position
- 47.5735° N, 115.2807° W
- Control tower
- No, non-towered
- Sectional chart
- Great Falls
- Magnetic variation
- 19° E (1980)
- Fuel
- 100LL
- Ownership
- Publicly owned, open to the public
- Attendance
- Unattended
1 runway
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 08/26 | 4,200 × 75 ft | Asphalt, excellent condition | Medium intensity |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 08 | Left traffic | 2-light PAPI, left | None listed | None listed | Not listed |
| 26 | Left traffic | 2-light PAPI, left | None listed | None listed | Not listed |
VHF
Frequencies
- CTAF
- 122.9
- Automated Unicom Avbl on 118.325; 3 Clicks.; Actvt Papi Rwy 8 & 26; Mirl Rwy 08/26 - Ctaf.
Before you go
Brief KTHM in Ascent EFB.
Current weather, NOTAMs and the airport diagram for Thompson Falls, 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.