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ISN to TRS: distance & flight time
Williston (Sloulin Field International Airport) → Ronchi De Legionari (Trieste–Friuli Venezia Giulia Airport)
4,918 mi
7,914 km · 4,273 nm
10h 7m
estimated nonstop flight time
+7h
time difference · heading northeast
See live ISN→TRS fares Phone-only fares on this route — call free
Flight time details
4,918 miles nonstop takes roughly 10h 7m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- ISN — Sloulin Field International Airport · Williston, United States
- TRS — Trieste–Friuli Venezia Giulia Airport · Ronchi De Legionari, Italy
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 TRS
- POW · Portoroz Airport25 mi away
- AVB · Aviano Air Base44 mi away
- LJU · Ljubljana Jože Pučnik Airport55 mi away
- VCE · Venice Marco Polo Airport58 mi away
Frequently asked questions
How far is ISN from TRS?
The flight distance from Williston (ISN) to Ronchi De Legionari (TRS) is 4,918 miles (7,914 km, 4,273 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to TRS?
A nonstop flight takes about 10h 7m 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 Williston and Ronchi De Legionari?
Ronchi De Legionari is 7 hours ahead of Williston.
What is the cheapest way to fly from ISN to TRS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–TRS that never appear on search engines, with no booking fees.