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ISN to BOI: distance & flight time
Williston (Sloulin Field International Airport) → Boise (Boise Air Terminal/Gowen Field)
683 mi
1,099 km · 593 nm
1h 57m
estimated nonstop flight time
-1h
time difference · heading southwest
See live ISN→BOI fares Phone-only fares on this route — call free
Flight time details
683 miles nonstop takes roughly 1h 57m 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
- BOI — Boise Air Terminal/Gowen Field · Boise, 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 BOI
- MUO · Mountain Home Air Force Base40 mi away
- ONO · Ontario Municipal Airport50 mi away
- MYL · McCall Municipal Airport92 mi away
- SUN · Friedman Memorial Airport97 mi away
Frequently asked questions
How far is ISN from BOI?
The flight distance from Williston (ISN) to Boise (BOI) is 683 miles (1,099 km, 593 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to BOI?
A nonstop flight takes about 1h 57m 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 Boise?
Boise is 1 hour behind Williston.
What is the cheapest way to fly from ISN to BOI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–BOI that never appear on search engines, with no booking fees.