Need help booking?
Unpublished phone-only deals available
CSO to BFI: distance & flight time
Cochstedt (Cochstedt Airport) → Seattle (Boeing Field King County International Airport)
5,046 mi
8,120 km · 4,385 nm
10h 22m
estimated nonstop flight time
-9h
time difference · heading northwest
See live CSO→BFI fares Phone-only fares on this route — call free
Flight time details
5,046 miles nonstop takes roughly 10h 22m 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
- CSO — Cochstedt Airport · Cochstedt, Germany
- 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 CSO
- ZMG · Magdeburg "City" Airport17 mi away
- KOQ · Köthen Airport25 mi away
- LEJ · Leipzig/Halle Airport46 mi away
- BWE · Braunschweig-Wolfsburg Airport49 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 CSO from BFI?
The flight distance from Cochstedt (CSO) to Seattle (BFI) is 5,046 miles (8,120 km, 4,385 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CSO to BFI?
A nonstop flight takes about 10h 22m 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 Cochstedt and Seattle?
Seattle is 9 hours behind Cochstedt.
What is the cheapest way to fly from CSO to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CSO–BFI that never appear on search engines, with no booking fees.