Need help booking?
Unpublished phone-only deals available
PIS to ISN: distance & flight time
Poitiers (Poitiers-Biard Airport) → Williston (Sloulin Field International Airport)
4,455 mi
7,169 km · 3,871 nm
9h 12m
estimated nonstop flight time
-7h
time difference · heading northwest
See live PIS→ISN fares Phone-only fares on this route — call free
Flight time details
4,455 miles nonstop takes roughly 9h 12m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- PIS — Poitiers-Biard Airport · Poitiers, France
- 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 PIS
- NIT · Niort-Souché Airport38 mi away
- ANG · Angoulême-Brie-Champniers Airport59 mi away
- TUF · Tours-Val-de-Loire Airport62 mi away
- LIG · Limoges Airport65 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 PIS from ISN?
The flight distance from Poitiers (PIS) to Williston (ISN) is 4,455 miles (7,169 km, 3,871 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PIS to ISN?
A nonstop flight takes about 9h 12m 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 Poitiers and Williston?
Williston is 7 hours behind Poitiers.
What is the cheapest way to fly from PIS to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PIS–ISN that never appear on search engines, with no booking fees.