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BFI to CNX: distance & flight time
Seattle (Boeing Field King County International Airport) → Chiang Mai (Chiang Mai International Airport)
7,191 mi
11,573 km · 6,249 nm
14h 34m
estimated nonstop flight time
+14h
time difference · heading northwest
See live BFI→CNX fares Phone-only fares on this route — call free
Flight time details
7,191 miles nonstop takes roughly 14h 34m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- BFI — Boeing Field King County International Airport · Seattle, United States
- CNX — Chiang Mai International Airport · Chiang Mai, Thailand
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 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
Near CNX
- LPT · Lampang Airport49 mi away
- PYY · Mae Hong Son Airport54 mi away
- HGN · Mae Hong Son Airport74 mi away
- PRH · Phrae Airport90 mi away
Frequently asked questions
How far is BFI from CNX?
The flight distance from Seattle (BFI) to Chiang Mai (CNX) is 7,191 miles (11,573 km, 6,249 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BFI to CNX?
A nonstop flight takes about 14h 34m 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 Seattle and Chiang Mai?
Chiang Mai is 14 hours ahead of Seattle.
What is the cheapest way to fly from BFI to CNX?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BFI–CNX that never appear on search engines, with no booking fees.