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ALN to TRS: distance & flight time
Alton/St Louis (St Louis Regional Airport) → Ronchi De Legionari (Trieste–Friuli Venezia Giulia Airport)
4,914 mi
7,909 km · 4,270 nm
10h 6m
estimated nonstop flight time
—
time difference · heading northeast
See live ALN→TRS fares Phone-only fares on this route — call free
Flight time details
4,914 miles nonstop takes roughly 10h 6m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- ALN — St Louis Regional Airport · Alton/St Louis, 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 ALN
- STL · St Louis Lambert International Airport20 mi away
- BLV · Scott AFB/Midamerica Airport26 mi away
- SUS · Spirit of St Louis Airport36 mi away
- SPI · Abraham Lincoln Capital Airport69 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 ALN from TRS?
The flight distance from Alton/St Louis (ALN) to Ronchi De Legionari (TRS) is 4,914 miles (7,909 km, 4,270 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ALN to TRS?
A nonstop flight takes about 10h 6m 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 cheapest way to fly from ALN to TRS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ALN–TRS that never appear on search engines, with no booking fees.