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ISN to WYS: distance & flight time
Williston (Sloulin Field International Airport) → West Yellowstone (Yellowstone Airport)
430 mi
691 km · 373 nm
1h 24m
estimated nonstop flight time
-1h
time difference · heading southwest
See live ISN→WYS fares Phone-only fares on this route — call free
Flight time details
430 miles nonstop takes roughly 1h 24m 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
- WYS — Yellowstone Airport · West Yellowstone, 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 WYS
- BZN · Gallatin Field75 mi away
- JAC · Jackson Hole Airport77 mi away
- LVM · Mission Field77 mi away
- IDA · Idaho Falls Regional Airport94 mi away
Frequently asked questions
How far is ISN from WYS?
The flight distance from Williston (ISN) to West Yellowstone (WYS) is 430 miles (691 km, 373 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to WYS?
A nonstop flight takes about 1h 24m 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 West Yellowstone?
West Yellowstone is 1 hour behind Williston.
What is the cheapest way to fly from ISN to WYS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–WYS that never appear on search engines, with no booking fees.