AirHint found the following cheapest return flights from Madrid (MAD) to Ljubljana (LJU) in August 2025 (see full year).

Return flights

27 Aug - 03 Sep	Iberia	direct
31 Aug - 03 Sep	Iberia	direct
27 Aug - 04 Sep	SWISS
27 Aug - 01 Sep	SWISS
25 Aug - 03 Sep	SWISS
25 Aug - 04 Sep	SWISS
27 Aug - 02 Sep	SWISS
31 Aug - 14 Sep	Vueling Airlines
28 Aug - 19 Sep	Lufthansa
28 Aug - 02 Sep	Lufthansa
13 Aug - 18 Aug	Vueling Airlines
13 Aug - 16 Aug	Vueling Airlines
19 Aug - 25 Aug	SWISS
13 Aug - 29 Aug	Vueling Airlines
13 Aug - 20 Aug	Iberia	direct
13 Aug - 27 Aug	Iberia	direct
19 Aug - 26 Aug	SWISS
04 Aug - 12 Aug	Air Serbia
22 Aug - 26 Aug	Air Serbia
08 Aug - 13 Aug	Air Serbia

Also check the deals for one-way flights from Madrid to Ljubljana in August.

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 Madrid to Ljubljana in August from $189

Return flights