Need help booking?
Unpublished phone-only deals available
TKN to BFI: distance & flight time
Tokunoshima (Tokunoshima Airport) → Seattle (Boeing Field King County International Airport)
5,615 mi
9,036 km · 4,879 nm
11h 29m
estimated nonstop flight time
-16h
time difference · heading northeast
See live TKN→BFI fares Phone-only fares on this route — call free
Flight time details
5,615 miles nonstop takes roughly 11h 29m 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
- TKN — Tokunoshima Airport · Tokunoshima, 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 TKN
- OKE · Okierabu Airport30 mi away
- RNJ · Yoron Airport62 mi away
- ASJ · Amami Airport65 mi away
- KKX · Kikai Airport72 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 TKN from BFI?
The flight distance from Tokunoshima (TKN) to Seattle (BFI) is 5,615 miles (9,036 km, 4,879 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TKN to BFI?
A nonstop flight takes about 11h 29m 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 Tokunoshima and Seattle?
Seattle is 16 hours behind Tokunoshima.
What is the cheapest way to fly from TKN to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TKN–BFI that never appear on search engines, with no booking fees.