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

Return flights

09 Dec - 16 Dec	Vueling Airlines
11 Dec - 15 Dec	easyJet
06 Dec - 15 Dec	easyJet
10 Dec - 16 Dec	easyJet
16 Dec - 18 Dec	Vueling Airlines
11 Dec - 16 Dec	easyJet
16 Dec - 20 Dec	Vueling Airlines
05 Dec - 15 Dec	Air Serbia
15 Dec - 23 Dec	Air Serbia
16 Dec - 05 Jan	Vueling Airlines
03 Dec - 10 Dec	easyJet
16 Dec - 06 Jan	Vueling Airlines
18 Dec - 05 Jan	Vueling Airlines
31 Dec - 05 Jan	easyJet
30 Dec - 05 Jan	Vueling Airlines
22 Dec - 08 Jan	Air Serbia
25 Dec - 05 Jan	Air Serbia
20 Dec - 05 Jan	Air Serbia
25 Dec - 01 Jan	Air Serbia
29 Dec - 05 Jan	Air Serbia

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

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 December from 130€

Return flights