AirHint found the following cheapest return flights from Warsaw (WAW) to Barcelona (BCN) in September 2025 (see full year).

Return flights

29 Sep - 06 Oct	Wizz Air Malta
29 Sep - 03 Oct	Wizz Air Malta
29 Sep - 08 Oct	Wizz Air Malta
30 Sep - 01 Oct	Wizz Air
30 Sep - 03 Oct	Wizz Air
30 Sep - 13 Oct	Wizz Air Malta
29 Sep - 02 Oct	Wizz Air
29 Sep - 09 Oct	Wizz Air Malta
22 Sep - 03 Oct	Wizz Air
29 Sep - 04 Oct	Wizz Air
29 Sep - 30 Sep	Wizz Air Malta
10 Sep - 16 Sep	Wizz Air
10 Sep - 17 Sep	Wizz Air
10 Sep - 12 Sep	Wizz Air
09 Sep - 17 Sep	Wizz Air
23 Sep - 30 Sep	Wizz Air
17 Sep - 23 Sep	Wizz Air Malta
24 Sep - 26 Sep	Wizz Air
22 Sep - 23 Sep	Wizz Air
25 Sep - 30 Sep	Ryanair

Also check the deals for one-way flights from Warsaw to Barcelona 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 Warsaw to Barcelona in September from $97

Return flights