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SGD to BFI: distance & flight time
Soenderborg (Sønderborg Airport) → Seattle (Boeing Field King County International Airport)
4,828 mi
7,769 km · 4,195 nm
9h 56m
estimated nonstop flight time
-9h
time difference · heading northwest
See live SGD→BFI fares Phone-only fares on this route — call free
Flight time details
4,828 miles nonstop takes roughly 9h 56m 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
- SGD — Sønderborg Airport · Soenderborg, Denmark
- 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 SGD
- FLF · Flensburg-Schäferhaus Airport21 mi away
- SKS · Skrydstrup Air Base27 mi away
- WBG · Schleswig Air Base37 mi away
- ODE · Odense Airport41 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 SGD from BFI?
The flight distance from Soenderborg (SGD) to Seattle (BFI) is 4,828 miles (7,769 km, 4,195 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SGD to BFI?
A nonstop flight takes about 9h 56m 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 Soenderborg and Seattle?
Seattle is 9 hours behind Soenderborg.
What is the cheapest way to fly from SGD to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SGD–BFI that never appear on search engines, with no booking fees.