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

Return flights

01 Mar - 05 Mar	Air Serbia	direct
23 Mar - 27 Mar	Air Serbia	direct
19 Mar - 22 Mar	Air Serbia	direct
19 Mar - 26 Mar	Air Serbia	direct
13 Mar - 20 Mar	Air Serbia	direct
06 Mar - 08 Mar	Air Serbia	direct
11 Mar - 15 Mar	Air Serbia	direct
12 Mar - 15 Mar	Air Serbia	direct
06 Mar - 10 Mar	Air Serbia
20 Mar - 29 Mar	Air Serbia	direct
26 Mar - 03 Apr	SWISS
31 Mar - 10 Apr	Lufthansa
26 Mar - 03 Apr	Air Serbia	direct
30 Mar - 02 Apr	LOT
27 Mar - 10 Apr	KLM
28 Mar - 01 Apr	SWISS
28 Mar - 11 Apr	KLM
31 Mar - 02 Apr	Air Serbia	direct
29 Mar - 01 Apr	LOT
30 Mar - 01 Apr	LOT

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

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 March from 159€

Return flights