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BIL to SIR: distance & flight time
Billings (Billings Logan International Airport) → Sion (Sion Airport)
4,982 mi
8,018 km · 4,329 nm
10h 14m
estimated nonstop flight time
+8h
time difference · heading northeast
See live BIL→SIR fares Phone-only fares on this route — call free
Flight time details
4,982 miles nonstop takes roughly 10h 14m 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
- BIL — Billings Logan International Airport · Billings, 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 BIL
- COD · Yellowstone Regional Airport92 mi away
- LVM · Mission Field92 mi away
- LWT · Lewistown Municipal Airport96 mi away
- SHR · Sheridan County Airport105 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 BIL from SIR?
The flight distance from Billings (BIL) to Sion (SIR) is 4,982 miles (8,018 km, 4,329 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BIL to SIR?
A nonstop flight takes about 10h 14m 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 Billings and Sion?
Sion is 8 hours ahead of Billings.
What is the cheapest way to fly from BIL to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BIL–SIR that never appear on search engines, with no booking fees.