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

Return flights

27 Aug - 28 Aug	Ryanair
27 Aug - 01 Sep	Ryanair
04 Aug - 04 Aug	Air Serbia
04 Aug - 12 Aug	Air Serbia	direct
01 Aug - 04 Aug	Air Serbia
07 Aug - 11 Aug	Air Serbia
31 Aug - 03 Sep	Ryanair
25 Aug - 31 Aug	Ryanair
21 Aug - 24 Aug	Air Serbia	direct
18 Aug - 20 Aug	Air Serbia	direct
03 Aug - 10 Aug	Air Serbia	direct
06 Aug - 13 Aug	Air Serbia	direct

Also check the deals for one-way flights from Zagreb 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 Zagreb to Belgrade in August from $173

Return flights