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INT to SIR: distance & flight time
Winston-salem (Smith Reynolds Airport) → Sion (Sion Airport)
4,372 mi
7,036 km · 3,799 nm
9h 2m
estimated nonstop flight time
+6h
time difference · heading northeast
See live INT→SIR fares Phone-only fares on this route — call free
Flight time details
4,372 miles nonstop takes roughly 9h 2m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- INT — Smith Reynolds Airport · Winston-salem, 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 INT
- GSO · Piedmont Triad International Airport16 mi away
- CLT · Charlotte Douglas International Airport75 mi away
- SVH · Statesville Regional Airport48 mi away
- IKB · Wilkes County Airport49 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 INT from SIR?
The flight distance from Winston-salem (INT) to Sion (SIR) is 4,372 miles (7,036 km, 3,799 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from INT to SIR?
A nonstop flight takes about 9h 2m 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 Winston-salem and Sion?
Sion is 6 hours ahead of Winston-salem.
What is the cheapest way to fly from INT to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on INT–SIR that never appear on search engines, with no booking fees.