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ACI to SIR: distance & flight time
Alderney (Alderney Airport) → Sion (Sion Airport)
502 mi
808 km · 437 nm
1h 34m
estimated nonstop flight time
+1h
time difference · heading southeast
See live ACI→SIR fares Phone-only fares on this route — call free
Flight time details
502 miles nonstop takes roughly 1h 34m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- ACI — Alderney Airport · Alderney, Guernsey
- 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 ACI
- GCI · Guernsey Airport26 mi away
- JER · Jersey Airport34 mi away
- CER · Cherbourg-Maupertus Airport34 mi away
- GFR · Granville Airport64 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 ACI from SIR?
The flight distance from Alderney (ACI) to Sion (SIR) is 502 miles (808 km, 437 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACI to SIR?
A nonstop flight takes about 1h 34m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from ACI to SIR?
Nonstop service on ACI–SIR depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 34m nonstop estimate.
What is the time difference between Alderney and Sion?
Sion is 1 hour ahead of Alderney.
What is the cheapest way to fly from ACI to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACI–SIR that never appear on search engines, with no booking fees.
Why are some ACI to SIR fares phone-only?
Consolidator contracts let us sell certain ACI–SIR tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.