Need help booking?
Unpublished phone-only deals available
AST to SIR: distance & flight time
Astoria (Astoria Regional Airport) → Sion (Sion Airport)
5,401 mi
8,692 km · 4,693 nm
11h 3m
estimated nonstop flight time
+9h
time difference · heading northeast
See live AST→SIR fares Phone-only fares on this route — call free
Flight time details
5,401 miles nonstop takes roughly 11h 3m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time gain when reading arrival times on your ticket.
The two airports
- AST — Astoria Regional Airport · Astoria, 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 AST
- KLS · Southwest Washington Regional Airport47 mi away
- OTK · Tillamook Airport51 mi away
- HQM · Bowerman Airport56 mi away
- CLS · Chehalis Centralia Airport56 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 AST from SIR?
The flight distance from Astoria (AST) to Sion (SIR) is 5,401 miles (8,692 km, 4,693 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from AST to SIR?
A nonstop flight takes about 11h 3m 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 Astoria and Sion?
Sion is 9 hours ahead of Astoria.
What is the cheapest way to fly from AST to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on AST–SIR that never appear on search engines, with no booking fees.