Need help booking?
Unpublished phone-only deals available
ISN to ATY: distance & flight time
Williston (Sloulin Field International Airport) → Watertown (Watertown Regional Airport)
382 mi
614 km · 332 nm
1h 28m
estimated nonstop flight time
Same time
time difference · heading southeast
See live ISN→ATY fares Phone-only fares on this route — call free
Flight time details
382 miles nonstop takes roughly 1h 28m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- ISN — Sloulin Field International Airport · Williston, United States
- ATY — Watertown Regional Airport · Watertown, 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 ATY
- HON · Huron Regional Airport64 mi away
- ABR · Aberdeen Regional Airport72 mi away
- MHE · Mitchell Municipal Airport90 mi away
- FSD · Joe Foss Field Airport94 mi away
Frequently asked questions
How far is ISN from ATY?
The flight distance from Williston (ISN) to Watertown (ATY) is 382 miles (614 km, 332 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to ATY?
A nonstop flight takes about 1h 28m 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 ATY?
Nonstop service on ISN–ATY 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 28m nonstop estimate.
What is the cheapest way to fly from ISN to ATY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–ATY that never appear on search engines, with no booking fees.
Why are some ISN to ATY fares phone-only?
Consolidator contracts let us sell certain ISN–ATY 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.