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SIR to MLS: distance & flight time
Sion (Sion Airport) → Miles City (Frank Wiley Field)
4,866 mi
7,830 km · 4,228 nm
10h
estimated nonstop flight time
-8h
time difference · heading northwest
See live SIR→MLS fares Phone-only fares on this route — call free
Flight time details
4,866 miles nonstop takes roughly 10h 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
- SIR — Sion Airport · Sion, Switzerland
- MLS — Frank Wiley Field · Miles City, 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 SIR
- AOT · Aosta Airport33 mi away
- QLS · Lausanne-Blécherette Airport41 mi away
- ZIN · Interlaken Air Base41 mi away
- MVV · Megève Airport43 mi away
Near MLS
- GDV · Dawson Community Airport71 mi away
- OLF · L M Clayton Airport116 mi away
- SDY · Sidney - Richland Regional Airport119 mi away
- SHR · Sheridan County Airport126 mi away
Frequently asked questions
How far is SIR from MLS?
The flight distance from Sion (SIR) to Miles City (MLS) is 4,866 miles (7,830 km, 4,228 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SIR to MLS?
A nonstop flight takes about 10h 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 Sion and Miles City?
Miles City is 8 hours behind Sion.
What is the cheapest way to fly from SIR to MLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SIR–MLS that never appear on search engines, with no booking fees.