Need help booking?
Unpublished phone-only deals available
ISN to YSP: distance & flight time
Williston (Sloulin Field International Airport) → Marathon (Marathon Airport)
792 mi
1,274 km · 688 nm
2h 11m
estimated nonstop flight time
+1h
time difference · heading east
See live ISN→YSP fares Phone-only fares on this route — call free
Flight time details
792 miles nonstop takes roughly 2h 11m gate to gate, flying east. 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
- YSP — Marathon Airport · Marathon, Canada
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 YSP
- YMG · Manitouwadge Airport32 mi away
- YGQ · Geraldton Greenstone Regional Airport76 mi away
- YHN · Hornepayne Municipal Airport78 mi away
- YXZ · Wawa Airport90 mi away
Frequently asked questions
How far is ISN from YSP?
The flight distance from Williston (ISN) to Marathon (YSP) is 792 miles (1,274 km, 688 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to YSP?
A nonstop flight takes about 2h 11m 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 Marathon?
Marathon is 1 hour ahead of Williston.
What is the cheapest way to fly from ISN to YSP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–YSP that never appear on search engines, with no booking fees.