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

Return flights

29 Dec - 07 Jan	Ryanair
30 Dec - 08 Jan	Ryanair
25 Dec - 04 Jan	Air Europa
25 Dec - 01 Jan	Air Europa
24 Dec - 31 Dec	Air Europa
25 Dec - 29 Dec	Air Europa
30 Dec - 04 Jan	Air Serbia
23 Dec - 30 Dec	Air Serbia
20 Dec - 29 Dec	Ryanair
30 Dec - 02 Jan	LOT
21 Dec - 25 Dec	Air Serbia
28 Dec - 01 Jan	Air Serbia
21 Dec - 23 Dec	Air Serbia
21 Dec - 25 Dec	Air Serbia	direct
21 Dec - 23 Dec	Air Serbia	direct
30 Dec - 08 Jan	Air Serbia	direct
29 Dec - 02 Jan	Ryanair
26 Dec - 29 Dec	Vueling Airlines
30 Dec - 31 Dec	Air Serbia

Also check the deals for one-way flights from Lisbon to Belgrade 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 Lisbon to Belgrade in December from 224€

Return flights