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

Return flights

30 Sep - 15 Oct	Wizz Air UK
23 Sep - 30 Sep	Wizz Air UK
22 Sep - 29 Sep	Ryanair
27 Sep - 29 Sep	Ryanair
27 Sep - 01 Oct	Ryanair
20 Sep - 25 Sep	Ryanair
22 Sep - 25 Sep	Ryanair
29 Sep - 02 Oct	Ryanair
20 Sep - 26 Sep	Ryanair
20 Sep - 27 Sep	Ryanair
20 Sep - 22 Sep	Ryanair
20 Sep - 24 Sep	Ryanair
24 Sep - 27 Sep	Wizz Air UK

Also check the deals for one-way flights from Bratislava 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 Bratislava to Barcelona in September from 85€

Return flights