Airport information
- ICAO / IATA
- KSMN / SMN
- Coordinates
- 45.1222, -113.8820
- Elevation
- 4,043 ft MSL
- Magnetic variation
- 13E
- Sectional chart
- GREAT FALLS
- Airport use
- Public
- Control tower
- No
- ARTCC
- SALT LAKE CITY (ZLC)
- Flight service (FSS)
- BOISE
- NOTAM facility
- SMN
- Attendance
- ALL 0800-1700
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- Activated
- 1940/04
- Distance from city
- 4 S
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (MDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:11 AM | 11:11Z |
| Sunrise | 05:48 AM | 11:48Z |
| Sunset | 09:26 PM | 03:26Z |
| Evening civil twilight Loggable night begins | 10:04 PM | 04:04Z |
Plan a flight from KSMN
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT MIRL RY 17/35; REIL RY 17 & RY 35 AND PAPI RY 17 - CTAF. on 122.8 — Chart Supplement ↗
Runway lighting aids — 17: 4-light PAPI (left).
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 17 · 175°
- Pattern
- left (turns left)
- TPA
- 5,000 ft MSL (≈1,000 AGL)
- CTAF
- 122.8
Enter the left downwind for Rwy 17 at 5,000 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 17/35
5,510 ft × 75 ft · Asphalt (Excellent)- Heading
- 175° mag · 188° true
- Markings
- none
- VGSI
- 4-light PAPI (left) (3.5°)
- Traffic pattern
- Left
- Heading
- 355° mag · 8° true
- Markings
- none
- Traffic pattern
- Left
| Runway | Length | Your margin |
|---|---|---|
| 17/35 | 5,510 ft |
Communication frequencies
| Service | Frequency | Notes |
|---|---|---|
| AWOS | 135.075 | AWOS 3 |
| CNTR | 132.4 | SALT LAKE CITY CNTR |
| RDO | 122.55 | BOISE RDO |
| UNIC | 122.8 | CTAF/UNICOM |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| LKT · Salmon | VOR-DME | 113.50 | r037° / 10.5 NM |
Procedures at a glance
Approaches3
Departures
Minimums & Hot Spots
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- 100, Jet A
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns
- Other services
- Charter, Instruction, Rental
Ownership & management
Remarks FAA
- CONSTD PRIOR TO 1959.
- RETROREFLECTIVE REFLECTORS ON PARALLEL TWY AND RAMP AREA.
- TAXIWAY ACCESS TO AIRCRAFT RAMP LOCATED ON SE END OF AIRPORT IS CLSD.
- COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -12C.
- ACTVT MIRL RY 17/35; REIL RY 17 & RY 35 AND PAPI RY 17 - CTAF.
- USE RGT TFC PATTERN FOR NIGHT OPNS ONLY.
- +1000' MOUNTAIN AT 3 MILES.
Nearby airports
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 KSMN 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.
About KSMN
Lemhi County Airport (SMN · KSMN) is an airport in Salmon, ID, at 4,043 ft MSL. It has 1 runway, the longest 5,510 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KSMN, refreshed from the Aviation Weather Center and FAA NASR.
Does KSMN have a control tower?
No. Lemhi County Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at KSMN?
Lemhi County Airport has 1 runway; the longest is 5,510 ft. See the Runways tab for headings, surface, and lighting.
Where is KSMN?
Lemhi County Airport is in Salmon, ID, at an elevation of 4,043 ft MSL. Coordinates: 45.1222, -113.8820.
Fly out of KSMN often?
Save KSMN 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.