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

Return flights

12 Jul - 23 Jul	Brussels Airlines
07 Jul - 21 Jul	KLM
12 Jul - 19 Jul	SWISS
07 Jul - 11 Jul	KLM
10 Jul - 16 Jul	SWISS
08 Jul - 30 Jul	Lufthansa
12 Jul - 18 Jul	SWISS
10 Jul - 15 Jul	SWISS
19 Jul - 22 Jul	SWISS
07 Jul - 30 Jul	Air Serbia
27 Jul - 06 Aug	Iberia
25 Jul - 07 Aug	KLM
24 Jul - 14 Aug	Lufthansa
26 Jul - 09 Aug	Air Serbia
27 Jul - 07 Aug	Lufthansa
24 Jul - 01 Aug	Lufthansa

Also check the deals for one-way flights from Ljubljana to Lisbon in July.

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 July from $318

Return flights