Reference only — not for real-world navigation.
KSMN
Lemhi County Airport · Salmon
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
4,043 ft / 1,232 m
Transition Altitude
18,000 ft
Primary Channel
RDO 122.55 MHz (BOISE RDO)
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
17/35 · 5,150 ft · AsphaltLIGHTEDFlight Planning
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Welcome to the technical flight briefing for Lemhi County Airport (KSMN), located in Salmon, United States. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 1 active runway with a maximum elevation of 4,043 ft. Please note that this field primarily supports VFR and visual approach procedures.Reference the data below for primary communication channels and detailed runway characteristics. Pilots should observe a Transition Altitude of 18,000 ft verified for this field for altimeter reset procedures.
Full Name
Lemhi County Airport
ICAO / IATA
KSMN / SMN
Municipality
Salmon
Country
Region
US-ID — Idaho
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
4,043 ft
Official Website
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 17 / 35
LIGHTED
Runway Length: 5,150 ft / 1,570 m
Runway Width: 60 ft / 18 m
Surface Type: Asphalt
Heading: 188° / 8°
Runway Width: 60 ft / 18 m
Surface Type: Asphalt
Heading: 188° / 8°
RWY 17 (188°)
No ILS / Visual Only
RWY 35 (8°)
No ILS / Visual Only
AWOS AWOS 3
135.07 MHz
CNTR SALT LAKE CITY CNTR
132.40 MHz
RDO BOISE RDO
122.55 MHz
UNIC CTAF/UNICOM
122.80 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026