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

Return flights

25 Aug - 27 Aug	Croatia Airlines
21 Aug - 24 Aug	Austrian Airlines
05 Aug - 12 Aug	Austrian Airlines
07 Aug - 12 Aug	Austrian Airlines
28 Aug - 01 Sep	Air Serbia
22 Aug - 24 Aug	Austrian Airlines
07 Aug - 10 Aug	Austrian Airlines
14 Aug - 17 Aug	Austrian Airlines
08 Aug - 10 Aug	Croatia Airlines
26 Aug - 31 Aug	Austrian Airlines
01 Aug - 28 Aug	Croatia Airlines
30 Aug - 05 Sep	Croatia Airlines
28 Aug - 01 Sep	Air Serbia	direct

Also check the deals for one-way flights from Split 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 Split to Belgrade in August from 215€

Return flights