Need help booking?
Unpublished phone-only deals available
COS to ISN: distance & flight time
Colorado Springs (City of Colorado Springs Municipal Airport) → Williston (Sloulin Field International Airport)
650 mi
1,046 km · 565 nm
1h 53m
estimated nonstop flight time
+1h
time difference · heading north
See live COS→ISN fares Phone-only fares on this route — call free
Flight time details
650 miles nonstop takes roughly 1h 53m 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
- COS — City of Colorado Springs Municipal Airport · Colorado Springs, 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 COS
- FCS · Butts AAF (Fort Carson) Air Field9 mi away
- DEN · Denver International Airport73 mi away
- PUB · Pueblo Memorial Airport37 mi away
- APA · Centennial Airport53 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 COS from ISN?
The flight distance from Colorado Springs (COS) to Williston (ISN) is 650 miles (1,046 km, 565 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from COS to ISN?
A nonstop flight takes about 1h 53m 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 Colorado Springs and Williston?
Williston is 1 hour ahead of Colorado Springs.
What is the cheapest way to fly from COS to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on COS–ISN that never appear on search engines, with no booking fees.