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STN to SIR: distance & flight time
London (London Stansted Airport) → Sion (Sion Airport)
506 mi
814 km · 440 nm
1h 34m
estimated nonstop flight time
+1h
time difference · heading southeast
See live STN→SIR fares Phone-only fares on this route — call free
Flight time details
506 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
- STN — London Stansted Airport · London, United Kingdom
- 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 STN
- LHR · London Heathrow Airport41 mi away
- LGW · London Gatwick Airport54 mi away
- QFO · Duxford Aerodrome15 mi away
- CBG · Cambridge Airport22 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 STN from SIR?
The flight distance from London (STN) to Sion (SIR) is 506 miles (814 km, 440 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STN 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.
What is the time difference between London and Sion?
Sion is 1 hour ahead of London.
What is the cheapest way to fly from STN to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STN–SIR that never appear on search engines, with no booking fees.