Need help booking?
Unpublished phone-only deals available
FCS to ISN: distance & flight time
Fort Carson (Butts AAF (Fort Carson) Air Field) → Williston (Sloulin Field International Airport)
659 mi
1,060 km · 572 nm
1h 54m
estimated nonstop flight time
+1h
time difference · heading north
See live FCS→ISN fares Phone-only fares on this route — call free
Flight time details
659 miles nonstop takes roughly 1h 54m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- FCS — Butts AAF (Fort Carson) Air Field · Fort Carson, United States
- 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 FCS
- COS · City of Colorado Springs Municipal Airport9 mi away
- PUB · Pueblo Memorial Airport30 mi away
- DEN · Denver International Airport82 mi away
- APA · Centennial Airport62 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 FCS from ISN?
The flight distance from Fort Carson (FCS) to Williston (ISN) is 659 miles (1,060 km, 572 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FCS to ISN?
A nonstop flight takes about 1h 54m 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 Fort Carson and Williston?
Williston is 1 hour ahead of Fort Carson.
What is the cheapest way to fly from FCS to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FCS–ISN that never appear on search engines, with no booking fees.