AirHint found the following cheapest one-way flights from Porto (OPO) to Athens (ATH) in September 2026 (see full year).
One-Way flights
| 29 Sep | Ryanair | ||
| 11 Sep | Volotea | ||
| 30 Sep | Ryanair | ||
| 21 Sep | Air Europa | ||
| 22 Sep | Ryanair | ||
| 15 Sep | Vueling Airlines | ||
| 16 Sep | Vueling Airlines | ||
| 24 Sep | easyJet | ||
| 17 Sep | Air Serbia | ||
| 18 Sep | Transavia France |
Also check the deals for return flights from Porto to Athens in September.
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