AirHint found the following cheapest return flights from Barcelona (BCN) to Ljubljana (LJU) in October 2025 (see full year).

Return flights

31 Oct - 03 Nov	Vueling Airlines
30 Oct - 02 Nov	Wizz Air
03 Oct - 13 Oct	Air Serbia
20 Oct - 22 Oct	Air Serbia
10 Oct - 13 Oct	Air Serbia
09 Oct - 12 Oct	Air Serbia
31 Oct - 02 Nov	Air Serbia
07 Oct - 16 Oct	easyJet
31 Oct - 05 Nov	SWISS
31 Oct - 04 Nov	SWISS
29 Oct - 05 Nov	SWISS
22 Oct - 26 Oct	Vueling Airlines
10 Oct - 12 Oct	Air Serbia
18 Oct - 15 Nov	Vueling Airlines
17 Oct - 22 Oct	Air Serbia
19 Oct - 22 Oct	easyJet
14 Oct - 17 Oct	Vueling Airlines
29 Oct - 02 Nov	Wizz Air Malta

Also check the deals for one-way flights from Barcelona to Ljubljana in October.

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 Barcelona to Ljubljana in October from 139€

Return flights