Need help booking?
Unpublished phone-only deals available
ISN to MSO: distance & flight time
Williston (Sloulin Field International Airport) → Missoula (Missoula International Airport)
495 mi
796 km · 430 nm
1h 33m
estimated nonstop flight time
-1h
time difference · heading west
See live ISN→MSO fares Phone-only fares on this route — call free
Flight time details
495 miles nonstop takes roughly 1h 33m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- ISN — Sloulin Field International Airport · Williston, United States
- MSO — Missoula International Airport · Missoula, 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 MSO
- FCA · Glacier Park International Airport97 mi away
- BTM · Bert Mooney Airport101 mi away
- HLN · Helena Regional Airport102 mi away
- SMN · Lemhi County Airport124 mi away
Frequently asked questions
How far is ISN from MSO?
The flight distance from Williston (ISN) to Missoula (MSO) is 495 miles (796 km, 430 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to MSO?
A nonstop flight takes about 1h 33m 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 Williston and Missoula?
Missoula is 1 hour behind Williston.
What is the cheapest way to fly from ISN to MSO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–MSO that never appear on search engines, with no booking fees.