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GSP to ISN: distance & flight time
Greenville (Greenville Spartanburg International Airport) → Williston (Sloulin Field International Airport)
1,430 mi
2,301 km · 1,243 nm
3h 35m
estimated nonstop flight time
-1h
time difference · heading northwest
See live GSP→ISN fares Phone-only fares on this route — call free
Flight time details
1,430 miles nonstop takes roughly 3h 35m 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
- GSP — Greenville Spartanburg International Airport · Greenville, 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 GSP
- GMU · Greenville Downtown Airport8 mi away
- GDC · Donaldson Field Airport13 mi away
- SPA · Spartanburg Downtown Memorial Airport15 mi away
- CLT · Charlotte Douglas International Airport75 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 GSP from ISN?
The flight distance from Greenville (GSP) to Williston (ISN) is 1,430 miles (2,301 km, 1,243 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GSP to ISN?
A nonstop flight takes about 3h 35m 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 Greenville and Williston?
Williston is 1 hour behind Greenville.
What is the cheapest way to fly from GSP to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GSP–ISN that never appear on search engines, with no booking fees.