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DTW to SIR: distance & flight time
Detroit (Detroit Metropolitan Wayne County Airport) → Sion (Sion Airport)
4,241 mi
6,825 km · 3,685 nm
8h 47m
estimated nonstop flight time
+6h
time difference · heading northeast
See live DTW→SIR fares Phone-only fares on this route — call free
Flight time details
4,241 miles nonstop takes roughly 8h 47m 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
- DTW — Detroit Metropolitan Wayne County Airport · Detroit, 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 DTW
- YIP · Willow Run Airport9 mi away
- ARB · Ann Arbor Municipal Airport20 mi away
- YQG · Windsor Airport21 mi away
- DET · Coleman A. Young Municipal 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 DTW from SIR?
The flight distance from Detroit (DTW) to Sion (SIR) is 4,241 miles (6,825 km, 3,685 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DTW to SIR?
A nonstop flight takes about 8h 47m 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 Detroit and Sion?
Sion is 6 hours ahead of Detroit.
What is the cheapest way to fly from DTW to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DTW–SIR that never appear on search engines, with no booking fees.