KKLS · Southwest Washington Regional Airport

KELSO, WASHINGTON · MEDIUM AIRPORT

Elevation ft

Runway

4,391

Longest ft · 12/30

46.12N

122.90W

Southwest Washington Regional Airport serves Kelso, Washington at 20 ft elevation with its longest runway, 12/30, at 4,391 by 100 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 KKLS in JetDesk: live METAR, TAF, winds and runway verdict →

01Runways

Runway	Length × width	Surface	Lighting
12/30	4,391 × 100 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 20 ft is about 15°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, 15°C)	20 ft	2,442 ft	2,112 ft	3,168 ft
Warm day (ISA +10)	1,220 ft	2,676 ft	2,239 ft	3,358 ft
Hot day (ISA +20)	2,420 ft	2,910 ft	2,365 ft	3,548 ft
35°C afternoon	2,425 ft	2,911 ft	2,366 ft	3,549 ft

Planning aid only. Even on a 35°C afternoon the longest runway (12/30, 4,391 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,549 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 KKLS is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KSPB Scappoose Industrial Airpark	21 nm S	5,100 ft
KCLS Chehalis Centralia Airport	34 nm N	5,000 ft
KPDX Portland International Airport	34 nm S	11,000 ft
KHIO Portland Hillsboro Airport	35 nm S	6,600 ft
KTTD Portland Troutdale Airport	40 nm SE	5,399 ft
KAST Astoria Regional Airport	41 nm W	5,794 ft

04Jet A prices and FBOs at KKLS

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

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