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ISN to CPH: distance & flight time
Williston (Sloulin Field International Airport) → Copenhagen (Copenhagen Kastrup Airport)
4,379 mi
7,047 km · 3,805 nm
9h 3m
estimated nonstop flight time
+7h
time difference · heading northeast
See live ISN→CPH fares Phone-only fares on this route — call free
Flight time details
4,379 miles nonstop takes roughly 9h 3m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- ISN — Sloulin Field International Airport · Williston, United States
- CPH — Copenhagen Kastrup Airport · Copenhagen, Denmark
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 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
Near CPH
- RKE · Copenhagen Roskilde Airport21 mi away
- MMX · Malmö Sturup Airport29 mi away
- AGH · Ängelholm-Helsingborg Airport47 mi away
- KID · Kristianstad Airport59 mi away
Frequently asked questions
How far is ISN from CPH?
The flight distance from Williston (ISN) to Copenhagen (CPH) is 4,379 miles (7,047 km, 3,805 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to CPH?
A nonstop flight takes about 9h 3m 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 Williston and Copenhagen?
Copenhagen is 7 hours ahead of Williston.
What is the cheapest way to fly from ISN to CPH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–CPH that never appear on search engines, with no booking fees.