AirHint found the following cheapest one-way flights from Porto (OPO) to Karlsruhe/Baden-Baden (FKB) in September 2025 (see full year).
One-Way flights
| 29 Sep | Ryanair | direct | |
| 17 Sep | Ryanair | ||
| 25 Sep | Ryanair | ||
| 21 Sep | Ryanair | ||
| 24 Sep | Ryanair | ||
| 18 Sep | Ryanair | ||
| 16 Sep | Ryanair | ||
| 26 Sep | Ryanair | direct | |
| 10 Sep | Vueling Airlines | ||
| 22 Sep | Ryanair |
Also check the deals for return flights from Porto to Karlsruhe/Baden-Baden in September.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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