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SDR to BFI: distance & flight time
Santander (Santander Airport) → Seattle (Boeing Field King County International Airport)
5,123 mi
8,244 km · 4,452 nm
10h 31m
estimated nonstop flight time
-9h
time difference · heading northwest
See live SDR→BFI fares Phone-only fares on this route — call free
Flight time details
5,123 miles nonstop takes roughly 10h 31m 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
- SDR — Santander Airport · Santander, Spain
- 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 SDR
- BIO · Bilbao Airport47 mi away
- VIT · Vitoria/Foronda Airport67 mi away
- RGS · Burgos Airport75 mi away
- RJL · Logroño-Agoncillo Airport101 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 SDR from BFI?
The flight distance from Santander (SDR) to Seattle (BFI) is 5,123 miles (8,244 km, 4,452 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SDR to BFI?
A nonstop flight takes about 10h 31m 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 Santander and Seattle?
Seattle is 9 hours behind Santander.
What is the cheapest way to fly from SDR to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SDR–BFI that never appear on search engines, with no booking fees.