KSMN · Lemhi County Airport

SALMON, IDAHO · MEDIUM AIRPORT · SCHEDULED SERVICE

4,043

Elevation ft

Runway

5,510

Longest ft · 17/35

45.12N

113.88W

Lemhi County Airport serves Salmon, Idaho at 4,043 ft elevation with its longest runway, 17/35, at 5,510 by 75 ft. The figures below are computed from FAA NASR runway data (via OurAirports) and the same rules of thumb JetDesk uses on the airport page in the app; the POH and current NOTAMs are the authority.

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01Runways

Runway	Length × width	Surface	Lighting
17/35	5,510 × 75 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 4,043 ft is about 7°C. Every 1,000 ft of density altitude adds roughly 8 percent to a turboprop's takeoff distance and 5 percent to its landing distance. The table uses Piper Meridian book numbers (2,438 ft takeoff and 2,110 ft landing over a 50 ft obstacle at sea level, ISA, max weight) as a reference airplane; heavier turboprops and light jets scale the same way from their own POH figures.

Conditions	Density altitude	Takeoff est.	Landing est.	Landing × 1.5
Standard day (ISA, 7°C)	4,043 ft	3,227 ft	2,537 ft	3,805 ft
Warm day (ISA +10)	5,243 ft	3,461 ft	2,663 ft	3,995 ft
Hot day (ISA +20)	6,443 ft	3,695 ft	2,790 ft	4,185 ft
35°C afternoon	7,413 ft	3,884 ft	2,892 ft	4,338 ft

Planning aid only. Even on a 35°C afternoon the longest runway (17/35, 5,510 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (4,338 ft needed). The percentages are a generic rule of thumb applied to one reference airplane, not certified performance data for any specific aircraft, and the runway size categories describe the runway, not your airplane's suitability. Verify with the approved flight manual before every flight.

03Nearby fields with 5,000 ft or more

Useful as alternates, as fuel stops when the price at KSMN is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
4U9 Hyak Airbase	55 nm SE	7,002 ft
KDLN Dillon Airport	57 nm E	6,501 ft
KHRF Ravalli County Airport	69 nm N	5,200 ft
KRVF Ruby Valley Field	71 nm E	6,000 ft
K3U3 Bowman Field	75 nm NE	6,011 ft

04Jet A prices and FBOs at KSMN

No public API publishes FBO fuel prices, so JetDesk does not guess. Pilots and crews log the price they actually paid at KSMN, the app flags a price stale after two weeks, and the route finder ranks every field within a corridor of your route by net savings after the cost of the extra cycle. Log a price at KSMN or read what a fuel stop actually saves.

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