Porto → Barcelona flight prices
Flare is a flight-deal alert app for iPhone and Android: it scans fares and flags unusually low prices. Flare is not an airline, not a travel agency and not Flair Airlines. You book with the airline or the provider.
What Flare's scans show for Porto to Barcelona
Over the last 126 days of scans, the lowest one-way fare Flare found from Porto (OPO) to Barcelona (BCN) was €15, on 30 Sept 2026. On a typical day the cheapest fare found was around €21, and the latest daily low, on 23 Oct 2026, was €15.
The latest daily low is below the typical level for this route.
For return trips, the lowest fare found was €27 on 4 Sept 2026, with a typical daily low of €59 over 108 days.
Month by month
| Month | Lowest found | Typical daily low | Days observed |
|---|---|---|---|
| June 2026 | €17 | €21 | 26 |
| July 2026 | €20 | €22 | 31 |
| August 2026 | €20 | €22 | 23 |
| September 2026 | €15 | €18 | 24 |
| October 2026 | €15 | €16 | 22 |
How to read these prices
Flare scans fares from its departure markets several times a day. For each day, this page keeps the lowest one-way fare found for Porto to Barcelona, whatever the travel date. Amounts are in euros. They are timestamped observations, not quotes or guarantees: recheck dates, airports, baggage and the payable total with the provider before booking.
FAQ
What is the cheapest fare Flare has seen from Porto to Barcelona?
€15 one-way, found on 30 Sept 2026. It is a past observation: fares change constantly and must be rechecked with the provider.
What does a typical Porto to Barcelona fare look like?
Over 126 days of scans, the median daily lowest one-way fare was €21. Half of the days were cheaper than that, half were more expensive.
How do I know when Porto to Barcelona gets cheap?
Install Flare and choose Porto as your departure city. The app alerts you when a fare from your area drops well below its usual level.