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BFI to SDR: distance & flight time
Seattle (Boeing Field King County International Airport) → Santander (Santander Airport)
5,123 mi
8,244 km · 4,452 nm
10h 31m
estimated nonstop flight time
+9h
time difference · heading northeast
See live BFI→SDR fares Phone-only fares on this route — call free
Flight time details
5,123 miles nonstop takes roughly 10h 31m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time gain when reading arrival times on your ticket.
The two airports
- BFI — Boeing Field King County International Airport · Seattle, United States
- SDR — Santander Airport · Santander, Spain
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 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
Near SDR
- BIO · Bilbao Airport47 mi away
- VIT · Vitoria/Foronda Airport67 mi away
- RGS · Burgos Airport75 mi away
- RJL · Logroño-Agoncillo Airport101 mi away
Frequently asked questions
How far is BFI from SDR?
The flight distance from Seattle (BFI) to Santander (SDR) 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 BFI to SDR?
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 Seattle and Santander?
Santander is 9 hours ahead of Seattle.
What is the cheapest way to fly from BFI to SDR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BFI–SDR that never appear on search engines, with no booking fees.