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

Return flights

25 Sep - 29 Sep	Wizz Air UK
11 Sep - 14 Sep	Air Serbia
19 Sep - 22 Sep	Wizz Air UK
18 Sep - 21 Sep	Air Serbia	direct
11 Sep - 13 Sep	Norwegian Air Sweden AOC
25 Sep - 29 Sep	Air Serbia	direct
05 Sep - 09 Sep	Wizz Air
26 Sep - 28 Sep	Air Serbia	direct
26 Sep - 29 Sep	Air Serbia	direct
09 Sep - 14 Sep	Vueling Airlines

Also check the deals for one-way flights from Split to Belgrade in September.

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 September from 163€

Return flights