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

Return flights

22 Mar - 28 Mar	Air Serbia	direct
21 Mar - 28 Mar	Air Serbia	direct
26 Mar - 28 Mar	Air Serbia	direct
26 Mar - 28 Mar	Vueling Airlines
07 Mar - 13 Mar	Air Serbia	direct
28 Mar - 04 Apr	Air Serbia
13 Mar - 16 Mar	Lufthansa
20 Mar - 23 Mar	Lufthansa
13 Mar - 15 Mar	Lufthansa
23 Mar - 29 Mar	KLM
27 Mar - 29 Mar	KLM

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 169€

Return flights