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GRF to BFI: distance & flight time
Fort Lewis (Gray Army Air Field) → Seattle (Boeing Field King County International Airport)
34 mi
54 km · 29 nm
33m
estimated nonstop flight time
Same time
time difference · heading northeast
See live GRF→BFI fares Phone-only fares on this route — call free
Flight time details
34 miles nonstop takes roughly 33m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- GRF — Gray Army Air Field · Fort Lewis, United States
- BFI — Boeing Field King County International Airport · Seattle, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near GRF
- SEA · Seattle Tacoma International Airport29 mi away
- TCM · McChord Air Force Base6 mi away
- TIW · Tacoma Narrows Airport13 mi away
- OLM · Olympia Regional Airport17 mi away
Near BFI
- SEA · Seattle Tacoma International Airport6 mi away
- RNT · Renton Municipal Airport5 mi away
- PWT · Bremerton National Airport22 mi away
- TIW · Tacoma Narrows Airport22 mi away
Frequently asked questions
How far is GRF from BFI?
The flight distance from Fort Lewis (GRF) to Seattle (BFI) is 34 miles (54 km, 29 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to BFI?
A nonstop flight takes about 33m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the cheapest way to fly from GRF to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–BFI that never appear on search engines, with no booking fees.