AirHint found the following cheapest return flights from Karlsruhe/Baden-Baden (FKB) to Porto (OPO) in August 2025 (see full year).

Return flights

22 Aug - 19 Sep	Ryanair
31 Aug - 14 Sep	Ryanair
22 Aug - 14 Sep	Ryanair
22 Aug - 19 Sep	Ryanair	direct
24 Aug - 14 Sep	Ryanair
22 Aug - 15 Sep	Ryanair
31 Aug - 19 Sep	Ryanair	direct
24 Aug - 22 Sep	Ryanair
31 Aug - 15 Sep	Ryanair	direct
25 Aug - 29 Aug	Ryanair
24 Aug - 27 Aug	Ryanair
31 Aug - 07 Sep	Ryanair
24 Aug - 29 Aug	Ryanair
22 Aug - 25 Aug	Ryanair
22 Aug - 29 Aug	Ryanair
08 Aug - 11 Aug	Ryanair
04 Aug - 08 Aug	Ryanair
01 Aug - 04 Aug	Ryanair
22 Aug - 31 Aug	Ryanair
24 Aug - 31 Aug	Ryanair

Also check the deals for one-way flights from Karlsruhe/Baden-Baden to Porto in August.

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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Cheapest return flights from Karlsruhe/Baden-Baden to Porto in August from $194

Return flights