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KKJ to BFI: distance & flight time
Kitakyushu (Kitakyūshū Airport) → Seattle (Boeing Field King County International Airport)
5,218 mi
8,398 km · 4,534 nm
10h 42m
estimated nonstop flight time
-16h
time difference · heading northeast
See live KKJ→BFI fares Phone-only fares on this route — call free
Flight time details
5,218 miles nonstop takes roughly 10h 42m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time set-back when reading arrival times on your ticket.
The two airports
- KKJ — Kitakyūshū Airport · Kitakyushu, Japan
- 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 KKJ
- UBJ · Yamaguchi Ube Airport15 mi away
- FUK · Fukuoka Airport38 mi away
- OIT · Oita Airport48 mi away
- HSG · Saga Airport64 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 KKJ from BFI?
The flight distance from Kitakyushu (KKJ) to Seattle (BFI) is 5,218 miles (8,398 km, 4,534 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KKJ to BFI?
A nonstop flight takes about 10h 42m 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 Kitakyushu and Seattle?
Seattle is 16 hours behind Kitakyushu.
What is the cheapest way to fly from KKJ to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KKJ–BFI that never appear on search engines, with no booking fees.