Need help booking?
Unpublished phone-only deals available
OPO to SIR: distance & flight time
Porto (Francisco de Sá Carneiro Airport) → Sion (Sion Airport)
868 mi
1,397 km · 754 nm
2h 21m
estimated nonstop flight time
+1h
time difference · heading northeast
See live OPO→SIR fares Phone-only fares on this route — call free
Flight time details
868 miles nonstop takes roughly 2h 21m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
- 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 OPO
- BGZ · Braga Municipal Aerodrome26 mi away
- VRL · Vila Real Airport50 mi away
- VSE · Aerodromo Goncalves Lobato (Viseu Airport)55 mi away
- VGO · Vigo Airport68 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 OPO from SIR?
The flight distance from Porto (OPO) to Sion (SIR) is 868 miles (1,397 km, 754 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OPO to SIR?
A nonstop flight takes about 2h 21m 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 Porto and Sion?
Sion is 1 hour ahead of Porto.
What is the cheapest way to fly from OPO to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OPO–SIR that never appear on search engines, with no booking fees.