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SIR to APA: distance & flight time
Sion (Sion Airport) → Denver (Centennial Airport)
5,183 mi
8,341 km · 4,504 nm
10h 38m
estimated nonstop flight time
-8h
time difference · heading northwest
See live SIR→APA fares Phone-only fares on this route — call free
Flight time details
5,183 miles nonstop takes roughly 10h 38m 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
- APA — Centennial Airport · Denver, 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 APA
- DEN · Denver International Airport22 mi away
- BFK · Buckley Air Force Base10 mi away
- BJC · Rocky Mountain Metropolitan Airport27 mi away
- WBU · Boulder Municipal Airport38 mi away
Frequently asked questions
How far is SIR from APA?
The flight distance from Sion (SIR) to Denver (APA) is 5,183 miles (8,341 km, 4,504 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SIR to APA?
A nonstop flight takes about 10h 38m 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 Denver?
Denver is 8 hours behind Sion.
What is the cheapest way to fly from SIR to APA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SIR–APA that never appear on search engines, with no booking fees.