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NJA to BFI: distance & flight time
Atsugi (Atsugi Naval Air Facility) → Seattle (Boeing Field King County International Airport)
4,807 mi
7,737 km · 4,177 nm
9h 54m
estimated nonstop flight time
-16h
time difference · heading northeast
See live NJA→BFI fares Phone-only fares on this route — call free
Flight time details
4,807 miles nonstop takes roughly 9h 54m 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
- NJA — Atsugi Naval Air Facility · Atsugi, 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 NJA
- HND · Tokyo Haneda International Airport20 mi away
- NRT · Narita International Airport57 mi away
- OKO · Yokota Air Base21 mi away
- OIM · Oshima Airport47 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 NJA from BFI?
The flight distance from Atsugi (NJA) to Seattle (BFI) is 4,807 miles (7,737 km, 4,177 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from NJA to BFI?
A nonstop flight takes about 9h 54m 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 Atsugi and Seattle?
Seattle is 16 hours behind Atsugi.
What is the cheapest way to fly from NJA to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on NJA–BFI that never appear on search engines, with no booking fees.