AirHint found the following cheapest return flights from London (LCY) to Belgrade (BEG) in January 2026 (see full year).

Return flights

16 Jan - 18 Jan	KLM
17 Jan - 19 Jan	KLM
16 Jan - 25 Jan	KLM
15 Jan - 18 Jan	SWISS
23 Jan - 26 Jan	KLM
01 Jan - 08 Jan	KLM
30 Jan - 01 Feb	SWISS
22 Jan - 25 Jan	SWISS
19 Jan - 25 Jan	KLM
02 Jan - 11 Jan	KLM
24 Jan - 31 Jan	SWISS

Also check the deals for one-way flights from London to Belgrade in January.

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 January from $252

Return flights