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SIR to STK: distance & flight time
Sion (Sion Airport) → Sterling (Sterling Municipal Airport)
5,073 mi
8,164 km · 4,408 nm
10h 25m
estimated nonstop flight time
-8h
time difference · heading northwest
See live SIR→STK fares Phone-only fares on this route — call free
Flight time details
5,073 miles nonstop takes roughly 10h 25m 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
- STK — Sterling Municipal Airport · Sterling, 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 STK
- AKO · Colorado Plains Regional Airport30 mi away
- SNY · Sidney Municipal-Lloyd W Carr Field37 mi away
- DEN · Denver International Airport91 mi away
- GXY · Greeley–Weld County Airport73 mi away
Frequently asked questions
How far is SIR from STK?
The flight distance from Sion (SIR) to Sterling (STK) is 5,073 miles (8,164 km, 4,408 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SIR to STK?
A nonstop flight takes about 10h 25m 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 Sterling?
Sterling is 8 hours behind Sion.
What is the cheapest way to fly from SIR to STK?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SIR–STK that never appear on search engines, with no booking fees.