Need help booking?
Unpublished phone-only deals available
OSP to ISN: distance & flight time
Slupsk (Redzikowo Air Base) → Williston (Sloulin Field International Airport)
4,553 mi
7,327 km · 3,956 nm
9h 24m
estimated nonstop flight time
-7h
time difference · heading northwest
See live OSP→ISN fares Phone-only fares on this route — call free
Flight time details
4,553 miles nonstop takes roughly 9h 24m 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
- OSP — Redzikowo Air Base · Slupsk, Poland
- 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 OSP
- GDN · Gdańsk Lech Wałęsa Airport55 mi away
- QYD · Oksywie Military Air Base57 mi away
- RNN · Bornholm Airport102 mi away
- BZG · Bydgoszcz Ignacy Jan Paderewski Airport102 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 OSP from ISN?
The flight distance from Slupsk (OSP) to Williston (ISN) is 4,553 miles (7,327 km, 3,956 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSP to ISN?
A nonstop flight takes about 9h 24m 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 Slupsk and Williston?
Williston is 7 hours behind Slupsk.
What is the cheapest way to fly from OSP to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSP–ISN that never appear on search engines, with no booking fees.