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TRS to SPF: distance & flight time
Ronchi De Legionari (Trieste–Friuli Venezia Giulia Airport) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
5,116 mi
8,234 km · 4,446 nm
10h 30m
estimated nonstop flight time
-8h
time difference · heading northwest
See live TRS→SPF fares Phone-only fares on this route — call free
Flight time details
5,116 miles nonstop takes roughly 10h 30m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time set-back when reading arrival times on your ticket.
The two airports
- TRS — Trieste–Friuli Venezia Giulia Airport · Ronchi De Legionari, Italy
- SPF — Black Hills Airport-Clyde Ice Field · Spearfish-South Dakota, 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 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
Near SPF
- RCA · Ellsworth Air Force Base41 mi away
- RAP · Rapid City Regional Airport47 mi away
- GCC · Gillette Campbell County Airport87 mi away
- CDR · Chadron Municipal Airport119 mi away
Frequently asked questions
How far is TRS from SPF?
The flight distance from Ronchi De Legionari (TRS) to Spearfish-South Dakota (SPF) is 5,116 miles (8,234 km, 4,446 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TRS to SPF?
A nonstop flight takes about 10h 30m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from TRS to SPF?
Nonstop service on TRS–SPF depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 10h 30m nonstop estimate.
What is the time difference between Ronchi De Legionari and Spearfish-South Dakota?
Spearfish-South Dakota is 8 hours behind Ronchi De Legionari.
What is the cheapest way to fly from TRS to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TRS–SPF that never appear on search engines, with no booking fees.
Why are some TRS to SPF fares phone-only?
Consolidator contracts let us sell certain TRS–SPF tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.