AirHint found the following cheapest return flights from Helsinki (HEL) to Belgrade (BEG) in August 2025 (see full year).

Return flights

28 Aug - 03 Sep	Norwegian Air Sweden AOC
28 Aug - 10 Sep	Norwegian Air Sweden AOC
25 Aug - 19 Sep	Norwegian Air Sweden AOC
30 Aug - 10 Sep	airBaltic
21 Aug - 27 Aug	Finnair
20 Aug - 27 Aug	Norwegian Air Sweden AOC
21 Aug - 24 Aug	Scandinavian Airlines
11 Aug - 18 Aug	Ryanair
27 Aug - 30 Aug	Norwegian Air Sweden AOC
29 Aug - 31 Aug	Lufthansa
17 Aug - 24 Aug	Lufthansa
21 Aug - 25 Aug	Lufthansa
22 Aug - 24 Aug	Scandinavian Airlines
15 Aug - 17 Aug	Norwegian Air Sweden AOC

Also check the deals for one-way flights from Helsinki to Belgrade in August.

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 Helsinki to Belgrade in August from $137

Return flights