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SIR to YQS: distance & flight time
Sion (Sion Airport) → St Thomas (St Thomas Municipal Airport)
4,127 mi
6,641 km · 3,586 nm
8h 33m
estimated nonstop flight time
—
time difference · heading northwest
See live SIR→YQS fares Phone-only fares on this route — call free
Flight time details
4,127 miles nonstop takes roughly 8h 33m gate to gate, flying northwest. 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
- SIR — Sion Airport · Sion, Switzerland
- YQS — St Thomas Municipal Airport · St Thomas, Canada
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 YQS
- YXU · London Airport18 mi away
- YCE · Centralia / James T. Field Memorial Aerodrome41 mi away
- YYZ · Lester B. Pearson International Airport97 mi away
- YKF · Waterloo Airport60 mi away
Frequently asked questions
How far is SIR from YQS?
The flight distance from Sion (SIR) to St Thomas (YQS) is 4,127 miles (6,641 km, 3,586 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SIR to YQS?
A nonstop flight takes about 8h 33m 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 SIR to YQS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SIR–YQS that never appear on search engines, with no booking fees.