Need help booking?
Unpublished phone-only deals available
SIR to DPA: distance & flight time
Sion (Sion Airport) → West Chicago (Dupage Airport)
4,449 mi
7,160 km · 3,866 nm
9h 11m
estimated nonstop flight time
-7h
time difference · heading northwest
See live SIR→DPA fares Phone-only fares on this route — call free
Flight time details
4,449 miles nonstop takes roughly 9h 11m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- SIR — Sion Airport · Sion, Switzerland
- DPA — Dupage Airport · West Chicago, United States
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 DPA
- ORD · Chicago O'Hare International Airport18 mi away
- LOT · Lewis University Airport22 mi away
- PWK · Chicago Executive Airport23 mi away
- MDW · Chicago Midway International Airport27 mi away
Frequently asked questions
How far is SIR from DPA?
The flight distance from Sion (SIR) to West Chicago (DPA) is 4,449 miles (7,160 km, 3,866 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SIR to DPA?
A nonstop flight takes about 9h 11m 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 Sion and West Chicago?
West Chicago is 7 hours behind Sion.
What is the cheapest way to fly from SIR to DPA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SIR–DPA that never appear on search engines, with no booking fees.