AirHint found the following cheapest return flights from Charleroi (CRL) to Porto (OPO) in September 2026 (see full year).
Return flights
| 18 Sep - 05 Oct | Ryanair | direct | |
| 16 Sep - 05 Oct | Ryanair | direct | |
| 03 Sep - 09 Sep | Ryanair | direct | |
| 07 Sep - 10 Sep | Ryanair | ||
| 03 Sep - 06 Sep | Ryanair | ||
| 03 Sep - 06 Sep | Ryanair | direct |
Also check the deals for one-way flights from Charleroi to Porto in September.
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