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YBY to BFI: distance & flight time
Bonnyville (Bonnyville Airport) → Seattle (Boeing Field King County International Airport)
686 mi
1,104 km · 596 nm
1h 57m
estimated nonstop flight time
-1h
time difference · heading southwest
See live YBY→BFI fares Phone-only fares on this route — call free
Flight time details
686 miles nonstop takes roughly 1h 57m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- YBY — Bonnyville Airport · Bonnyville, Canada
- 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 YBY
- YOD · CFB Cold Lake20 mi away
- YVG · Vermilion Airport66 mi away
- YLL · Lloydminster Airport74 mi away
- YLJ · Meadow Lake Airport91 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 YBY from BFI?
The flight distance from Bonnyville (YBY) to Seattle (BFI) is 686 miles (1,104 km, 596 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YBY to BFI?
A nonstop flight takes about 1h 57m 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 Bonnyville and Seattle?
Seattle is 1 hour behind Bonnyville.
What is the cheapest way to fly from YBY to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YBY–BFI that never appear on search engines, with no booking fees.