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ISN to YZH: distance & flight time
Williston (Sloulin Field International Airport) → Slave Lake (Slave Lake Airport)
683 mi
1,099 km · 594 nm
1h 57m
estimated nonstop flight time
-1h
time difference · heading northwest
See live ISN→YZH fares Phone-only fares on this route — call free
Flight time details
683 miles nonstop takes roughly 1h 57m gate to gate, flying northwest. 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
- YZH — Slave Lake Airport · Slave Lake, 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 YZH
- YZU · Whitecourt Airport89 mi away
- YPE · Peace River Airport122 mi away
- YXD · Edmonton City Centre (Blatchford Field) Airport129 mi away
- YET · Edson Airport136 mi away
Frequently asked questions
How far is ISN from YZH?
The flight distance from Williston (ISN) to Slave Lake (YZH) is 683 miles (1,099 km, 594 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to YZH?
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.
Are there nonstop flights from ISN to YZH?
Nonstop service on ISN–YZH depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 57m nonstop estimate.
What is the time difference between Williston and Slave Lake?
Slave Lake is 1 hour behind Williston.
What is the cheapest way to fly from ISN to YZH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–YZH that never appear on search engines, with no booking fees.
Why are some ISN to YZH fares phone-only?
Consolidator contracts let us sell certain ISN–YZH tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.