AirHint found the following cheapest return flights from Porto (OPO) to San Jose (SJO) in December 2025 (see full year).
Return flights
| 13 Dec - 01 Jan | Air Europa | ||
| 22 Dec - 04 Jan | Azores Airlines | ||
| 27 Dec - 03 Jan | Air Transat | ||
| 26 Dec - 04 Jan | Ryanair | ||
| 26 Dec - 02 Jan | Iberia |
Also check the deals for one-way flights from Porto to San Jose in December.
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