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KCO to BFI: distance & flight time
Topel (Cengiz Topel Airport) → Seattle (Boeing Field King County International Airport)
6,108 mi
9,829 km · 5,307 nm
12h 27m
estimated nonstop flight time
-10h
time difference · heading north
See live KCO→BFI fares Phone-only fares on this route — call free
Flight time details
6,108 miles nonstop takes roughly 12h 27m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10-hour time set-back when reading arrival times on your ticket.
The two airports
- KCO — Cengiz Topel Airport · Topel, Turkey
- 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 KCO
- IST · Istanbul Airport79 mi away
- SAW · Sabiha Gökçen International Airport42 mi away
- YEI · Bursa Yenişehir Airport43 mi away
- BTZ · Bursa Airport66 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 KCO from BFI?
The flight distance from Topel (KCO) to Seattle (BFI) is 6,108 miles (9,829 km, 5,307 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KCO to BFI?
A nonstop flight takes about 12h 27m 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 Topel and Seattle?
Seattle is 10 hours behind Topel.
What is the cheapest way to fly from KCO to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KCO–BFI that never appear on search engines, with no booking fees.