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

Return flights

11 Dec - 14 Dec	Pegasus Airlines
29 Dec - 04 Jan	Ryanair
29 Dec - 05 Jan	Ryanair
03 Dec - 10 Dec	Ryanair
13 Dec - 15 Dec	Ryanair
12 Dec - 15 Dec	Ryanair
17 Dec - 11 Jan	Ryanair
29 Dec - 03 Jan	Ryanair
20 Dec - 11 Jan	Ryanair
20 Dec - 22 Dec	Ryanair
26 Dec - 04 Jan	Ryanair
29 Dec - 02 Jan	Ryanair
14 Dec - 20 Dec	Pegasus Airlines
27 Dec - 03 Jan	Ryanair
20 Dec - 03 Jan	Ryanair
27 Dec - 02 Jan	Ryanair
24 Dec - 28 Dec	Ryanair
21 Dec - 23 Dec	Ryanair
23 Dec - 27 Dec	Ryanair
20 Dec - 21 Dec	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 116€

Return flights