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THS to BFI: distance & flight time
Sukhothai (Sukhothai Airport) → Seattle (Boeing Field King County International Airport)
7,259 mi
11,682 km · 6,308 nm
14h 42m
estimated nonstop flight time
-14h
time difference · heading northeast
See live THS→BFI fares Phone-only fares on this route — call free
Flight time details
7,259 miles nonstop takes roughly 14h 42m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time set-back when reading arrival times on your ticket.
The two airports
- THS — Sukhothai Airport · Sukhothai, Thailand
- 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 THS
- PHS · Phitsanulok Airport44 mi away
- TKT · Tak Airport44 mi away
- PRH · Phrae Airport66 mi away
- LPT · Lampang Airport74 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 THS from BFI?
The flight distance from Sukhothai (THS) to Seattle (BFI) is 7,259 miles (11,682 km, 6,308 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THS to BFI?
A nonstop flight takes about 14h 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 Sukhothai and Seattle?
Seattle is 14 hours behind Sukhothai.
What is the cheapest way to fly from THS to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THS–BFI that never appear on search engines, with no booking fees.