AirHint found the following cheapest return flights from Katowice (KTW) to Porto (OPO) in August 2025 (see full year).

Return flights

26 Aug - 02 Sep	Wizz Air
25 Aug - 29 Aug	Ryanair
28 Aug - 04 Sep	Ryanair
30 Aug - 03 Sep	Ryanair
05 Aug - 12 Aug	Wizz Air
12 Aug - 19 Aug	Wizz Air
19 Aug - 26 Aug	Wizz Air
31 Aug - 04 Sep	Ryanair
27 Aug - 31 Aug	Ryanair
02 Aug - 07 Aug	Wizz Air
23 Aug - 30 Aug	Ryanair
21 Aug - 25 Aug	Wizz Air
29 Aug - 05 Sep	Ryanair
28 Aug - 01 Sep	LOT
05 Aug - 08 Aug	Wizz Air
02 Aug - 05 Aug	Wizz Air
22 Aug - 07 Sep	Ryanair

Also check the deals for one-way flights from Katowice 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 Katowice to Porto in August from $193

Return flights