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

Return flights

05 Dec - 09 Dec	Ryanair
11 Dec - 16 Dec	Pegasus Airlines
10 Dec - 13 Dec	Pegasus Airlines
01 Dec - 08 Dec	Ryanair
11 Dec - 15 Dec	Pegasus Airlines
08 Dec - 11 Dec	Ryanair
11 Dec - 17 Jan	Pegasus Airlines
05 Dec - 07 Dec	Ryanair
11 Dec - 14 Dec	Ryanair
16 Dec - 20 Dec	Ryanair
05 Dec - 08 Dec	Ryanair
06 Dec - 12 Jan	Ryanair
30 Dec - 06 Jan	Ryanair
11 Dec - 07 Jan	Pegasus Airlines
26 Dec - 03 Jan	Ryanair
21 Dec - 10 Jan	Ryanair
20 Dec - 03 Jan	Ryanair
29 Dec - 01 Jan	Ryanair

Also check the deals for one-way flights from London 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 London to Belgrade in December from 106€

Return flights