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KOP to ISN: distance & flight time
Nakhon Phanom (Nakhon Phanom Airport) → Williston (Sloulin Field International Airport)
7,582 mi
12,202 km · 6,589 nm
15h 20m
estimated nonstop flight time
-12h
time difference · heading north
See live KOP→ISN fares Phone-only fares on this route — call free
Flight time details
7,582 miles nonstop takes roughly 15h 20m 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
- KOP — Nakhon Phanom Airport · Nakhon Phanom, 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 KOP
- SNO · Sakon Nakhon Airport37 mi away
- ZVK · Savannakhet Airport58 mi away
- ROI · Roi Et Airport105 mi away
- VII · Vinh Airport115 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 KOP from ISN?
The flight distance from Nakhon Phanom (KOP) to Williston (ISN) is 7,582 miles (12,202 km, 6,589 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOP to ISN?
A nonstop flight takes about 15h 20m 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 Nakhon Phanom and Williston?
Williston is 12 hours behind Nakhon Phanom.
What is the cheapest way to fly from KOP to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOP–ISN that never appear on search engines, with no booking fees.