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

Return flights

18 Aug - 26 Aug	Air Serbia
07 Aug - 25 Aug	Air Serbia
14 Aug - 18 Aug	Air Serbia
11 Aug - 12 Aug	Air Serbia	direct
06 Aug - 10 Aug	Air Serbia	direct
04 Aug - 08 Aug	Wizz Air Malta
04 Aug - 10 Aug	Wizz Air Malta
14 Aug - 17 Aug	Air Serbia	direct
13 Aug - 17 Aug	Air Serbia	direct
15 Aug - 17 Aug	Air Serbia

Also check the deals for one-way flights from Bucharest 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 Bucharest to Belgrade in August from $153

Return flights