KM46 · Colstrip Airport

COLSTRIP, MONTANA · SMALL AIRPORT

3,426

Elevation ft

Runway

5,100

Longest ft · 06/24

45.85N

106.71W

Colstrip Airport serves Colstrip, Montana at 3,426 ft elevation with its longest runway, 06/24, at 5,100 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.

Open KM46 in JetDesk: live METAR, TAF, winds and runway verdict →

01Runways

Runway	Length × width	Surface	Lighting
06/24	5,100 × 75 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 3,426 ft is about 8°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, 8°C)	3,426 ft	3,106 ft	2,471 ft	3,707 ft
Warm day (ISA +10)	4,626 ft	3,340 ft	2,598 ft	3,897 ft
Hot day (ISA +20)	5,826 ft	3,574 ft	2,725 ft	4,087 ft
35°C afternoon	6,648 ft	3,735 ft	2,811 ft	4,217 ft

Planning aid only. Even on a 35°C afternoon the longest runway (06/24, 5,100 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (4,217 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 KM46 is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KMLS Miles City Airport - Frank Wiley Field	49 nm NE	5,764 ft
KSHR Sheridan County Airport	66 nm S	8,301 ft
KBIL Billings Logan International Airport	77 nm W	10,518 ft
KRPX Roundup Airport	85 nm NW	5,098 ft
K6S8 Laurel Municipal Airport	86 nm W	5,199 ft
KBYG Johnson County Airport	88 nm S	6,143 ft

04Jet A prices and FBOs at KM46

No public API publishes FBO fuel prices, so JetDesk does not guess. Pilots and crews log the price they actually paid at KM46, 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 KM46 or read what a fuel stop actually saves.

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