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SUS to ISN: distance & flight time
Null (Spirit of St Louis Airport) → Williston (Sloulin Field International Airport)
923 mi
1,486 km · 802 nm
2h 28m
estimated nonstop flight time
Same time
time difference · heading northwest
See live SUS→ISN fares Phone-only fares on this route — call free
Flight time details
923 miles nonstop takes roughly 2h 28m gate to gate, flying northwest. 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
- SUS — Spirit of St Louis Airport · Null, United States
- ISN — Sloulin Field International Airport · Williston, 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 SUS
- STL · St Louis Lambert International Airport16 mi away
- ALN · St Louis Regional Airport36 mi away
- BLV · Scott AFB/Midamerica Airport45 mi away
- JEF · Jefferson City Memorial Airport81 mi away
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
Frequently asked questions
How far is SUS from ISN?
The flight distance from Null (SUS) to Williston (ISN) is 923 miles (1,486 km, 802 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SUS to ISN?
A nonstop flight takes about 2h 28m 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 cheapest way to fly from SUS to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SUS–ISN that never appear on search engines, with no booking fees.