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ISN to FCA: distance & flight time
Williston (Sloulin Field International Airport) → Kalispell (Glacier Park International Airport)
488 mi
785 km · 424 nm
1h 32m
estimated nonstop flight time
-1h
time difference · heading west
See live ISN→FCA fares Phone-only fares on this route — call free
Flight time details
488 miles nonstop takes roughly 1h 32m 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
- FCA — Glacier Park International Airport · Kalispell, 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 FCA
- WPC · Pincher Creek Airport84 mi away
- CTB · Cut Bank International Airport89 mi away
- MSO · Missoula International Airport97 mi away
- YQL · Lethbridge County Airport113 mi away
Frequently asked questions
How far is ISN from FCA?
The flight distance from Williston (ISN) to Kalispell (FCA) is 488 miles (785 km, 424 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to FCA?
A nonstop flight takes about 1h 32m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from ISN to FCA?
Nonstop service on ISN–FCA depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 32m nonstop estimate.
What is the time difference between Williston and Kalispell?
Kalispell is 1 hour behind Williston.
What is the cheapest way to fly from ISN to FCA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–FCA that never appear on search engines, with no booking fees.
Why are some ISN to FCA fares phone-only?
Consolidator contracts let us sell certain ISN–FCA tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.