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ISN to CSM: distance & flight time
Williston (Sloulin Field International Airport) → Clinton (Clinton Sherman Airport)
916 mi
1,474 km · 796 nm
2h 27m
estimated nonstop flight time
Same time
time difference · heading south
See live ISN→CSM fares Phone-only fares on this route — call free
Flight time details
916 miles nonstop takes roughly 2h 27m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- ISN — Sloulin Field International Airport · Williston, United States
- CSM — Clinton Sherman Airport · Clinton, 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 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 CSM
- HBR · Hobart Regional Airport26 mi away
- LTS · Altus Air Force Base47 mi away
- FSI · Henry Post Army Air Field (Fort Sill)66 mi away
- LAW · Lawton Fort Sill Regional Airport69 mi away
Frequently asked questions
How far is ISN from CSM?
The flight distance from Williston (ISN) to Clinton (CSM) is 916 miles (1,474 km, 796 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to CSM?
A nonstop flight takes about 2h 27m 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 cheapest way to fly from ISN to CSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–CSM that never appear on search engines, with no booking fees.