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

Return flights

13 Dec - 14 Dec	TAP
04 Dec - 11 Dec	Wizz Air Malta
06 Dec - 09 Dec	easyJet
04 Dec - 11 Dec	Air Serbia	direct
18 Dec - 04 Jan	Air Serbia
15 Dec - 19 Dec	Ryanair
16 Dec - 20 Dec	TAP
28 Dec - 03 Jan	Ryanair
22 Dec - 02 Jan	Vueling Airlines
20 Dec - 25 Dec	Ryanair
22 Dec - 01 Jan	Vueling Airlines
20 Dec - 30 Dec	Wizz Air

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 141€

Return flights