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

Return flights

17 Jul - 21 Jul	Air Serbia
17 Jul - 20 Jul	Air Serbia
17 Jul - 23 Jul	Air Serbia
21 Jul - 30 Jul	Air Serbia
19 Jul - 23 Jul	SWISS
19 Jul - 22 Jul	Air Serbia
22 Jul - 24 Jul	Air Serbia
21 Jul - 26 Jul	Air Serbia
26 Jul - 13 Aug	Lufthansa
21 Jul - 28 Jul	Air Serbia
14 Jul - 25 Jul	Lufthansa
26 Jul - 02 Aug	Air Serbia
13 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 291€

Return flights