AirHint found the following cheapest one-way flights from Basel (BSL) to Porto (OPO) in December 2025 (see full year).
One-Way flights
| 31 Dec | Ryanair | ||
| 30 Dec | easyJet | direct | |
| 31 Dec | easyJet | direct | |
| 24 Dec | easyJet | ||
| 28 Dec | easyJet | ||
| 23 Dec | easyJet | ||
| 25 Dec | Lufthansa | ||
| 27 Dec | Wizz Air | ||
| 28 Dec | easyJet | direct | |
| 20 Dec | Ryanair |
Also check the deals for return flights from Basel to Porto in December.
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