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Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IDA–ISN that never appear on search engines, with no booking fees.