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ISN to GUS: distance & flight time
Williston (Sloulin Field International Airport) → Peru (Grissom Air Reserve Base)
1,004 mi
1,616 km · 873 nm
2h 39m
estimated nonstop flight time
+1h
time difference · heading southeast
See live ISN→GUS fares Phone-only fares on this route — call free
Flight time details
1,004 miles nonstop takes roughly 2h 39m gate to gate, flying southeast. 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
- ISN — Sloulin Field International Airport · Williston, United States
- GUS — Grissom Air Reserve Base · Peru, 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 GUS
- OKK · Kokomo Municipal Airport10 mi away
- LAF · Purdue University Airport44 mi away
- AID · Anderson Municipal Darlington Field47 mi away
- MIE · Delaware County Johnson Field49 mi away
Frequently asked questions
How far is ISN from GUS?
The flight distance from Williston (ISN) to Peru (GUS) is 1,004 miles (1,616 km, 873 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to GUS?
A nonstop flight takes about 2h 39m 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 Peru?
Peru is 1 hour ahead of Williston.
What is the cheapest way to fly from ISN to GUS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–GUS that never appear on search engines, with no booking fees.