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KSD to BFI: distance & flight time
Karlstad (Karlstad Airport) → Seattle (Boeing Field King County International Airport)
4,633 mi
7,457 km · 4,026 nm
9h 33m
estimated nonstop flight time
-9h
time difference · heading northwest
See live KSD→BFI fares Phone-only fares on this route — call free
Flight time details
4,633 miles nonstop takes roughly 9h 33m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time set-back when reading arrival times on your ticket.
The two airports
- KSD — Karlstad Airport · Karlstad, Sweden
- 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 KSD
- KSK · Karlskoga Airport41 mi away
- HFS · Hagfors Airport41 mi away
- TYF · Torsby Airport51 mi away
- ORB · Örebro Airport62 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 KSD from BFI?
The flight distance from Karlstad (KSD) to Seattle (BFI) is 4,633 miles (7,457 km, 4,026 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KSD to BFI?
A nonstop flight takes about 9h 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 time difference between Karlstad and Seattle?
Seattle is 9 hours behind Karlstad.
What is the cheapest way to fly from KSD to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KSD–BFI that never appear on search engines, with no booking fees.