Cheapest return flights from Ljubljana to Barcelona in September from $175

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

Return flights

29 Sep - 01 Oct Air Serbia
08 Sep - 15 Sep Air Serbia
15 Sep - 22 Sep Air Serbia
30 Sep - 07 Oct SWISS
15 Sep - 19 Sep Air Serbia
09 Sep - 12 Sep Air Serbia
21 Sep - 28 Sep Air Serbia
05 Sep - 07 Sep Lufthansa
13 Sep - 16 Sep SWISS
01 Sep - 05 Sep SWISS
01 Sep - 27 Sep SWISS
14 Sep - 19 Sep Air Serbia

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

Skyscanner

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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