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

Return flights

26 Aug - 20 Sep	SWISS
26 Aug - 02 Sep	SWISS
13 Aug - 20 Aug	SWISS
11 Aug - 20 Aug	SWISS
25 Aug - 29 Aug	SWISS
18 Aug - 27 Aug	SWISS
25 Aug - 10 Sep	Lufthansa
20 Aug - 25 Aug	SWISS
27 Aug - 30 Aug	SWISS
05 Aug - 19 Aug	Turkish Airlines
26 Aug - 30 Aug	SWISS
26 Aug - 31 Aug	SWISS
21 Aug - 25 Aug	SWISS
10 Aug - 06 Sep	Air Serbia
30 Aug - 06 Sep	Air Serbia

Also check the deals for one-way flights from Ljubljana to Lisbon 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 Ljubljana to Lisbon in August from $261

Return flights