Need help booking?
Unpublished phone-only deals available
YZH to BFI: distance & flight time
Slave Lake (Slave Lake Airport) → Seattle (Boeing Field King County International Airport)
626 mi
1,007 km · 544 nm
1h 50m
estimated nonstop flight time
-1h
time difference · heading southwest
See live YZH→BFI fares Phone-only fares on this route — call free
Flight time details
626 miles nonstop takes roughly 1h 50m 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
- YZH — Slave Lake Airport · Slave Lake, 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 YZH
- YZU · Whitecourt Airport89 mi away
- YPE · Peace River Airport122 mi away
- YXD · Edmonton City Centre (Blatchford Field) Airport129 mi away
- YET · Edson Airport136 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 YZH from BFI?
The flight distance from Slave Lake (YZH) to Seattle (BFI) is 626 miles (1,007 km, 544 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YZH to BFI?
A nonstop flight takes about 1h 50m 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 Slave Lake and Seattle?
Seattle is 1 hour behind Slave Lake.
What is the cheapest way to fly from YZH to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YZH–BFI that never appear on search engines, with no booking fees.