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ACH to SIR: distance & flight time
Altenrhein (St Gallen Altenrhein Airport) → Sion (Sion Airport)
137 mi
221 km · 119 nm
50m
estimated nonstop flight time
Same time
time difference · heading southwest
See live ACH→SIR fares Phone-only fares on this route — call free
Flight time details
137 miles nonstop takes roughly 50m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
- 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 ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 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 ACH from SIR?
The flight distance from Altenrhein (ACH) to Sion (SIR) is 137 miles (221 km, 119 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACH to SIR?
A nonstop flight takes about 50m 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 cheapest way to fly from ACH to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACH–SIR that never appear on search engines, with no booking fees.