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

Return flights

03 Aug - 08 Aug	Ryanair
05 Aug - 12 Aug	Wizz Air
05 Aug - 08 Aug	Wizz Air
31 Aug - 07 Sep	easyJet
26 Aug - 31 Aug	Wizz Air
24 Aug - 06 Sep	easyJet
18 Aug - 22 Aug	Vueling Airlines
02 Aug - 10 Aug	Lufthansa
03 Aug - 09 Aug	Lufthansa
03 Aug - 07 Aug	Lufthansa
17 Aug - 20 Aug	Ryanair

Also check the deals for one-way flights from Lisbon 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 Lisbon to Ljubljana in August from 348€

Return flights