Need help booking?
Unpublished phone-only deals available
SGD to ISN: distance & flight time
Soenderborg (Sønderborg Airport) → Williston (Sloulin Field International Airport)
4,335 mi
6,977 km · 3,767 nm
8h 58m
estimated nonstop flight time
-7h
time difference · heading northwest
See live SGD→ISN fares Phone-only fares on this route — call free
Flight time details
4,335 miles nonstop takes roughly 8h 58m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- SGD — Sønderborg Airport · Soenderborg, Denmark
- 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 SGD
- FLF · Flensburg-Schäferhaus Airport21 mi away
- SKS · Skrydstrup Air Base27 mi away
- WBG · Schleswig Air Base37 mi away
- ODE · Odense Airport41 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 SGD from ISN?
The flight distance from Soenderborg (SGD) to Williston (ISN) is 4,335 miles (6,977 km, 3,767 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SGD to ISN?
A nonstop flight takes about 8h 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 Soenderborg and Williston?
Williston is 7 hours behind Soenderborg.
What is the cheapest way to fly from SGD to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SGD–ISN that never appear on search engines, with no booking fees.