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TWF to SIR: distance & flight time
Twin Falls (Joslin Field Magic Valley Regional Airport) → Sion (Sion Airport)
5,346 mi
8,603 km · 4,646 nm
10h 57m
estimated nonstop flight time
+8h
time difference · heading northeast
See live TWF→SIR fares Phone-only fares on this route — call free
Flight time details
5,346 miles nonstop takes roughly 10h 57m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- TWF — Joslin Field Magic Valley Regional Airport · Twin Falls, United States
- SIR — Sion Airport · Sion, Switzerland
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 TWF
- BYI · Burley Municipal Airport37 mi away
- SUN · Friedman Memorial Airport71 mi away
- MUO · Mountain Home Air Force Base80 mi away
- PIH · Pocatello Regional Airport101 mi away
Near SIR
- AOT · Aosta Airport33 mi away
- QLS · Lausanne-Blécherette Airport41 mi away
- ZIN · Interlaken Air Base41 mi away
- MVV · Megève Airport43 mi away
Frequently asked questions
How far is TWF from SIR?
The flight distance from Twin Falls (TWF) to Sion (SIR) is 5,346 miles (8,603 km, 4,646 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TWF to SIR?
A nonstop flight takes about 10h 57m 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 Twin Falls and Sion?
Sion is 8 hours ahead of Twin Falls.
What is the cheapest way to fly from TWF to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TWF–SIR that never appear on search engines, with no booking fees.