St Etienne to Porto flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for St Etienne to Porto is €221 with ASL Airlines France (checked on 5 Nov 2026).
Your next trip, last seen at €221
Lowest observedASL Airlines France · 3 stops · One wayWhen to fly
Explore datesMore dates worth a look
Last seen for 1 traveller on 6 Nov 2026. Check today's price.
Find the dates that work for you
The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- 16 Dec€283
- 24 Dec€248
- 31 Dec€221
- Lowest observed
- €221, departing 31 Dec 2026 (Last checked: 5 Nov 2026)One-way fare · Priced departure days checked in the last 14 days: 3Check live prices for this route
- Airlines seen
- ASL Airlines France, Transavia France
- Non-stop
- Yes
About this route
Explore the fares we observed from St Etienne to Porto. Prices move often, so pick your dates to see the latest options.
- Route distance
- 1,154 km
- Airlines seen
- ASL Airlines France, Transavia France
Route-level information; individual journeys vary.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- Porto Airport (OPO) → Porto, city gazetteer reference point (41.1579, -8.6291): ≈ 11 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Frequently asked
How much is a flight from St Etienne to Porto?
The lowest fare Routavio has observed is €221, found on 5 Nov 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from St Etienne to Porto?
In our observations December 2026 is the cheapest month so far, at €221.
Are there direct flights from St Etienne to Porto?
Yes. Published schedules report non-stop flights on this route with Ryanair.
Which airlines fly from St Etienne to Porto?
Routavio has seen these carriers on the route: ASL Airlines France, Transavia France.
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.