Thompson Falls Airport
THM · KTHM · Thompson Falls, MT · Non-towered · Print kneeboard
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 09:47 PM
| Event | Local (MDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:47 AM | 11:47Z |
| Sunrise | 06:22 AM | 12:22Z |
| Sunset | 09:11 PM | 03:11Z |
| Evening civil twilight Loggable night begins | 09:47 PM | 03:47Z |
Plan a flight from KTHM
Past 24 hours category · wind · ceiling · visibility trends
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Density altitude today projected curve · departure window · takeoff roll
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Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Advisories
NOTAMs
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Pilot reports
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Airspace hazards
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Runways
RWY 26LEFT traffic
- Heading
- 251° mag · 270° true
- Dimensions
- 4,200 × 75 ft
- TPA
- 3,500 ft MSL (≈1,000 AGL) · standard
- Surface
- Asphalt
- Lights
- 2-light PAPI (left) (3.25°)
- CTAF
- 122.9
Enter the left downwind (heading 071°) on the 45° at 3,500 ft MSL (≈1,000 AGL).
More details — RWY 26
- Threshold elev
- 2,467 ft
- Markings
- basic
- Approach obstacle
- Trees, 104 ft, 1,900 ft from threshold, 0 ft B of centerline — 16:1 slope to clear · penetrates the 20:1 visual approach surface
- Threshold crossing height
- 29 ft
- TDZ elevation
- 2,467 ft
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 08/26 | 4,200 ft |
Prefer one flat page? Full runway details for KTHM → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the KTHM kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
MLP 117.80
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| MLP · Mullan Pass | VOR/DME | 117.80 · 125X | High | r050° / 16.4 NM |
Prefer one flat list? All KTHM frequencies →
Charts & procedures
Airport info
From the field
Do you run KTHM, or an FBO, flight school, or shop on it? Claim your listing to keep fuel, fees, hours, and services current.
Airport information
- ICAO / IATA
- KTHM / THM
- Coordinates
- 47.5735, -115.2810
- Elevation
- 2,467 ft MSL
- Magnetic variation
- 19E
- Sectional chart
- GREAT FALLS
- Airport use
- Public
- Control tower
- No
- ARTCC
- SEATTLE (ZSE)
- Flight service (FSS)
- GREAT FALLS · 122.3 · 1-800-WX-BRIEF
- NOTAM facility
- GTF
- Attendance
- UNATNDD
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- Activated
- 1944/12
- Distance from city
- 3 SE
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- AUTOMATED UNICOM AVBL ON 118.325; 3 CLICKS.; ACTVT PAPI RWY 8 & 26; MIRL RWY 08/26 - CTAF. on 122.9 — Chart Supplement ↗
Runway lighting aids — 08: 2-light PAPI (left) · 26: 2-light PAPI (left).
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Fuel available
- 100LL
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
- Parking
- tiedowns
Ownership & management 2 contacts
Remarks FAA · 10 notes
General
- MKD PWR LINES 7 MI E MAINLAND TO BIG IS.
- PHONE ON ARPT.
- 100 FT SILO IN TRANS SFC NE SIDE OF RY.
- WATERFOWL INVOF ARPT.
- 300 FT CANDLESTICK FXD DIST MKRS IN TRANS SFC.
- SN REMOVAL INTMT. CALL 406-546-6384 FOR RWY COND.
- FOR CD CTC SEATTLE ARTCC AT 253-351-3694.
Lighting
- ACTVT PAPI RWY 8 & 26; MIRL RWY 08/26 - CTAF.
Fuel
- FUEL AVBL 24/7 WITH CREDIT CARD.
Contact
- ALTN PHONE 406-546-6384 OR 406-598-6227.
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Nearby airports
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Also nearby: 0MT7 Pinehurst Ranch Airport (private) (7 NM) · MT69 Littlebear Airport (private) (12 NM) · 29MT Craik Airport (private) (13 NM) · S34 Plains Airport (16 NM) · S09 Hot Springs Airport (27 NM) · MT88 Campbell Ranch Airport (28 NM)
About KTHM
Thompson Falls Airport (THM · KTHM) is an airport in Thompson Falls, MT, at 2,467 ft MSL. It has 1 runway, the longest 4,200 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KTHM, refreshed from the Aviation Weather Center and FAA NASR.
Does KTHM have a control tower?
No. Thompson Falls Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at KTHM?
Thompson Falls Airport has 1 runway; the longest is 4,200 ft. See the Runways section for headings, surface, and lighting.
Where is KTHM?
Thompson Falls Airport is in Thompson Falls, MT, at an elevation of 2,467 ft MSL. Coordinates: 47.5735, -115.2810.
Fly out of KTHM often?
Save KTHM as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open KTHM in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.