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GRB to SIR: distance & flight time
Green Bay (Austin Straubel International Airport) → Sion (Sion Airport)
4,331 mi
6,970 km · 3,763 nm
8h 57m
estimated nonstop flight time
+7h
time difference · heading northeast
See live GRB→SIR fares Phone-only fares on this route — call free
Flight time details
4,331 miles nonstop takes roughly 8h 57m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- GRB — Austin Straubel International Airport · Green Bay, 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 GRB
- ATW · Appleton International Airport25 mi away
- OSH · Wittman Regional Airport41 mi away
- MNM · Menominee Regional Airport50 mi away
- SBM · Sheboygan County Memorial Airport51 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 GRB from SIR?
The flight distance from Green Bay (GRB) to Sion (SIR) is 4,331 miles (6,970 km, 3,763 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRB to SIR?
A nonstop flight takes about 8h 57m 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 Green Bay and Sion?
Sion is 7 hours ahead of Green Bay.
What is the cheapest way to fly from GRB to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRB–SIR that never appear on search engines, with no booking fees.