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YKF to BFI: distance & flight time
Waterloo (Waterloo Airport) → Seattle (Boeing Field King County International Airport)
2,025 mi
3,258 km · 1,759 nm
4h 26m
estimated nonstop flight time
-3h
time difference · heading northwest
See live YKF→BFI fares Phone-only fares on this route — call free
Flight time details
2,025 miles nonstop takes roughly 4h 26m 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
- YKF — Waterloo Airport · Waterloo, 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 YKF
- YYZ · Lester B. Pearson International Airport40 mi away
- YHM · John C. Munro Hamilton International Airport30 mi away
- YXU · London Airport49 mi away
- YZD · Downsview Airport50 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 YKF from BFI?
The flight distance from Waterloo (YKF) to Seattle (BFI) is 2,025 miles (3,258 km, 1,759 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YKF to BFI?
A nonstop flight takes about 4h 26m 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 Waterloo and Seattle?
Seattle is 3 hours behind Waterloo.
What is the cheapest way to fly from YKF to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YKF–BFI that never appear on search engines, with no booking fees.