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ISN to IDA: distance & flight time
Williston (Sloulin Field International Airport) → Idaho Falls (Idaho Falls Regional Airport)
518 mi
833 km · 450 nm
1h 36m
estimated nonstop flight time
-1h
time difference · heading southwest
See live ISN→IDA fares Phone-only fares on this route — call free
Flight time details
518 miles nonstop takes roughly 1h 36m gate to gate, flying southwest. 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
- IDA — Idaho Falls Regional Airport · Idaho Falls, 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 IDA
- PIH · Pocatello Regional Airport49 mi away
- JAC · Jackson Hole Airport67 mi away
- WYS · Yellowstone Airport94 mi away
- BYI · Burley Municipal Airport109 mi away
Frequently asked questions
How far is ISN from IDA?
The flight distance from Williston (ISN) to Idaho Falls (IDA) is 518 miles (833 km, 450 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to IDA?
A nonstop flight takes about 1h 36m 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 Idaho Falls?
Idaho Falls is 1 hour behind Williston.
What is the cheapest way to fly from ISN to IDA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–IDA that never appear on search engines, with no booking fees.