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UTH to BFI: distance & flight time
Udon Thani (Udon Thani Airport) → Seattle (Boeing Field King County International Airport)
7,155 mi
11,516 km · 6,218 nm
14h 30m
estimated nonstop flight time
-14h
time difference · heading northeast
See live UTH→BFI fares Phone-only fares on this route — call free
Flight time details
7,155 miles nonstop takes roughly 14h 30m 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
- UTH — Udon Thani Airport · Udon Thani, 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 UTH
- VTE · Wattay International Airport44 mi away
- KKC · Khon Kaen Airport64 mi away
- LOE · Loei Airport70 mi away
- SNO · Sakon Nakhon Airport89 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 UTH from BFI?
The flight distance from Udon Thani (UTH) to Seattle (BFI) is 7,155 miles (11,516 km, 6,218 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UTH to BFI?
A nonstop flight takes about 14h 30m 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 Udon Thani and Seattle?
Seattle is 14 hours behind Udon Thani.
What is the cheapest way to fly from UTH to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UTH–BFI that never appear on search engines, with no booking fees.