King County International Airport - Boeing Field traffic pattern

Pattern altitude at King County International Airport - Boeing Field (BFI · KBFI) is 1,000 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and 32R, 14R are charted right traffic.

All of King County International Airport - Boeing Field — runways, frequencies, charts and live weather

Pattern diagram

Drawn to scale from the FAA NASR runway alignments and the per end right traffic flags — pick a runway to see its pattern. Live wind picks the favored runway when KBFI reports it.

RWY 14LLEFT traffic

Heading: 135° mag · 150° true
Dimensions: 3,709 × 100 ft
TPA: 1,000 ft MSL (≈1,000 AGL) · standard
Surface: Asphalt
Lights: 2-light PAPI (left) (3°)
Displaced thr: 250 ft
CTAF: 122.95

More details — RWY 14L

Threshold elev: 17 ft
Markings: basic
Threshold crossing height: 40 ft
TDZ elevation: 18 ft
End lights: REIL

Condition: Fair. Edge lights: Med. Surface: Grooved. Weight bearing: Single wheel 120k, Double wheel 250k, Dual tandem 550k, Double dual tandem 1109k.

Pattern side + displaced threshold: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates

Pattern direction by runway

Runway	Pattern	Heading	Pattern altitude
14L	Left traffic	135° mag	1,000 ft MSL (≈1,000 AGL)
32R	Right traffic	315° mag	1,000 ft MSL (≈1,000 AGL)
14R	Right traffic	135° mag	1,000 ft MSL (≈1,000 AGL)
32L	Left traffic	315° mag	1,000 ft MSL (≈1,000 AGL)

No pattern altitude is published for KBFI; the figure above is the AC 90-66B 1,000 ft AGL convention for propeller aircraft, rounded to the field. Turbine aircraft normally fly 1,500 ft AGL. Headings are the runway alignment; downwind is the reciprocal.

Flying the pattern at KBFI

King County International Airport - Boeing Field is towered, working 118.3. Contact the tower before entering the surface area and fly the pattern you are assigned — the directions below are the charted default when no instruction is given.

Watch the right traffic ends here: 32R, 14R. A right pattern at a field where the other end is left is the single most common place to end up pointing at opposing traffic. The full entry procedure is here →

Frequently asked

What is the traffic pattern altitude at KBFI?

King County International Airport - Boeing Field has no traffic pattern altitude published in the FAA NASR data. The AC 90-66B convention for propeller aircraft is 1,000 ft AGL, which works out to roughly 1,000 ft MSL (≈1,000 AGL) here — but confirm it against the Chart Supplement before you fly, since a field can have a non standard pattern altitude that NASR does not carry.

Does KBFI have right traffic?

Yes, on 2 runway ends: 32R, 14R. Every other end at King County International Airport - Boeing Field is standard left traffic.

Do I fly a standard pattern at KBFI?

King County International Airport - Boeing Field is towered (118.3), so the pattern shown here is the charted default — but the controller's instruction overrides it. Expect straight in approaches, base entries and midfield crossings as traffic dictates.

More about KBFI

Pattern direction and alignment are drawn from the FAA NASR (28-day cycle); the diagram is generated, not an FAA chart. Pattern altitude is shown as published where NASR carries one, otherwise as the AC 90-66B 1,000 ft AGL convention. For planning and education only; always verify against the Chart Supplement.