AirHint found the following cheapest return flights from Katowice (KTW) to Lisbon (LIS) in September 2025 (see full year).

Return flights

29 Sep - 02 Oct	Ryanair
27 Sep - 02 Oct	Ryanair
29 Sep - 04 Oct	Ryanair
27 Sep - 30 Sep	Ryanair
23 Sep - 30 Sep	Ryanair
27 Sep - 29 Sep	Ryanair
25 Sep - 30 Sep	Wizz Air
23 Sep - 29 Sep	Ryanair
24 Sep - 30 Sep	Wizz Air
22 Sep - 29 Sep	Ryanair
22 Sep - 27 Sep	Ryanair
23 Sep - 28 Sep	Ryanair
23 Sep - 27 Sep	Ryanair
26 Sep - 03 Oct	Wizz Air

Also check the deals for one-way flights from Katowice to Lisbon 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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Cheapest return flights from Katowice to Lisbon in September from $211

Return flights