AirHint found the following cheapest return flights from Lisbon (LIS) to Ljubljana (LJU) in July 2026 (see full year).
Return flights
| 28 Jul - 06 Aug | KLM | ||
| 18 Jul - 24 Jul | Air Serbia | ||
| 30 Jul - 06 Aug | SWISS | ||
| 17 Jul - 24 Jul | Lufthansa | ||
| 15 Jul - 20 Jul | Lufthansa | ||
| 05 Jul - 12 Jul | SWISS |
Also check the deals for one-way flights from Lisbon to Ljubljana in July.
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