KBFI · King County International Airport - Boeing Field

SEATTLE, WASHINGTON · MEDIUM AIRPORT · SCHEDULED SERVICE

Elevation ft

Runways

10,007

Longest ft · 14R/32L

47.53N

122.30W

King County International Airport - Boeing Field serves Seattle, Washington at 21 ft elevation with its longest runway, 14R/32L, at 10,007 by 200 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 KBFI in JetDesk: live METAR, TAF, winds and runway verdict →

01Runways

Runway	Length × width	Surface	Lighting
14R/32L	10,007 × 200 ft	asphalt	lit
14L/32R	3,709 × 100 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 21 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)	21 ft	2,442 ft	2,112 ft	3,168 ft
Warm day (ISA +10)	1,221 ft	2,676 ft	2,239 ft	3,358 ft
Hot day (ISA +20)	2,421 ft	2,910 ft	2,365 ft	3,548 ft
35°C afternoon	2,426 ft	2,911 ft	2,366 ft	3,549 ft

Planning aid only. Even on a 35°C afternoon the longest runway (14R/32L, 10,007 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 KBFI is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KRNT Renton Municipal Airport	4 nm SE	5,382 ft
KSEA Seattle–Tacoma International Airport	5 nm S	11,901 ft
KPWT Bremerton National Airport	19 nm W	6,000 ft
KTIW Tacoma Narrows Airport	19 nm SW	5,002 ft
KPAE Seattle Paine Field International Airport	23 nm N	9,010 ft

04Jet A prices and FBOs at KBFI

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

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