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BKK to ISN: distance & flight time
Bangkok (Suvarnabhumi Airport) → Williston (Sloulin Field International Airport)
7,907 mi
12,726 km · 6,871 nm
15h 58m
estimated nonstop flight time
-12h
time difference · heading north
See live BKK→ISN fares Phone-only fares on this route — call free
Flight time details
7,907 miles nonstop takes roughly 15h 58m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time set-back when reading arrival times on your ticket.
The two airports
- BKK — Suvarnabhumi Airport · Bangkok, Thailand
- ISN — Sloulin Field International Airport · Williston, 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 BKK
- DMK · Don Mueang International Airport19 mi away
- KDT · Kamphaeng Saen Airport63 mi away
- UTP · U-Tapao International Airport71 mi away
- HHQ · Hua Hin Airport90 mi away
Near ISN
- SDY · Sidney - Richland Regional Airport41 mi away
- YEN · Estevan Airport78 mi away
- OLF · L M Clayton Airport89 mi away
- GDV · Dawson Community Airport90 mi away
Frequently asked questions
How far is BKK from ISN?
The flight distance from Bangkok (BKK) to Williston (ISN) is 7,907 miles (12,726 km, 6,871 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BKK to ISN?
A nonstop flight takes about 15h 58m 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 Bangkok and Williston?
Williston is 12 hours behind Bangkok.
What is the cheapest way to fly from BKK to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BKK–ISN that never appear on search engines, with no booking fees.