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DET to BFI: distance & flight time
Detroit (Coleman A. Young Municipal Airport) → Seattle (Boeing Field King County International Airport)
1,932 mi
3,109 km · 1,679 nm
4h 15m
estimated nonstop flight time
-3h
time difference · heading northwest
See live DET→BFI fares Phone-only fares on this route — call free
Flight time details
1,932 miles nonstop takes roughly 4h 15m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time set-back when reading arrival times on your ticket.
The two airports
- DET — Coleman A. Young Municipal Airport · Detroit, 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 DET
- DTW · Detroit Metropolitan Wayne County Airport22 mi away
- YQG · Windsor Airport10 mi away
- MTC · Selfridge Air National Guard Base Airport17 mi away
- PTK · Oakland County International Airport27 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 DET from BFI?
The flight distance from Detroit (DET) to Seattle (BFI) is 1,932 miles (3,109 km, 1,679 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DET to BFI?
A nonstop flight takes about 4h 15m 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 time difference between Detroit and Seattle?
Seattle is 3 hours behind Detroit.
What is the cheapest way to fly from DET to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DET–BFI that never appear on search engines, with no booking fees.