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RDU to SIR: distance & flight time
Raleigh-durham (Raleigh Durham International Airport) → Sion (Sion Airport)
4,321 mi
6,954 km · 3,755 nm
8h 56m
estimated nonstop flight time
+6h
time difference · heading northeast
See live RDU→SIR fares Phone-only fares on this route — call free
Flight time details
4,321 miles nonstop takes roughly 8h 56m 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
- RDU — Raleigh Durham International Airport · Raleigh-durham, 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 RDU
- POB · Pope Field50 mi away
- RWI · Rocky Mount Wilson Regional Airport50 mi away
- FBG · Simmons Army Air Field52 mi away
- SOP · Moore County Airport56 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 RDU from SIR?
The flight distance from Raleigh-durham (RDU) to Sion (SIR) is 4,321 miles (6,954 km, 3,755 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RDU to SIR?
A nonstop flight takes about 8h 56m 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 Raleigh-durham and Sion?
Sion is 6 hours ahead of Raleigh-durham.
What is the cheapest way to fly from RDU to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RDU–SIR that never appear on search engines, with no booking fees.