Need help booking?
Unpublished phone-only deals available
FCO to ISN: distance & flight time
Rome (Leonardo da Vinci–Fiumicino Airport) → Williston (Sloulin Field International Airport)
5,096 mi
8,201 km · 4,428 nm
10h 28m
estimated nonstop flight time
-7h
time difference · heading northwest
See live FCO→ISN fares Phone-only fares on this route — call free
Flight time details
5,096 miles nonstop takes roughly 10h 28m 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
- FCO — Leonardo da Vinci–Fiumicino Airport · Rome, Italy
- 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 FCO
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 FCO from ISN?
The flight distance from Rome (FCO) to Williston (ISN) is 5,096 miles (8,201 km, 4,428 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FCO to ISN?
A nonstop flight takes about 10h 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 time difference between Rome and Williston?
Williston is 7 hours behind Rome.
What is the cheapest way to fly from FCO to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FCO–ISN that never appear on search engines, with no booking fees.