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

Return flights

29 Sep - 02 Oct	Wizz Air
29 Sep - 01 Oct	Wizz Air
22 Sep - 24 Sep	Wizz Air
29 Sep - 03 Oct	Wizz Air
23 Sep - 25 Sep	Air Serbia
24 Sep - 28 Sep	LOT
25 Sep - 28 Sep	LOT
26 Sep - 28 Sep	Austrian Airlines
26 Sep - 29 Sep	Austrian Airlines
22 Sep - 26 Sep	Wizz Air
24 Sep - 26 Sep	Wizz Air
28 Sep - 01 Oct	Air Serbia
12 Sep - 15 Sep	Air Serbia
12 Sep - 16 Sep	Air Serbia
29 Sep - 01 Oct	Air Serbia	direct
29 Sep - 03 Oct	Air Serbia	direct

Also check the deals for one-way flights from Belgrade to Brussels 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 Belgrade to Brussels in September from 141€

Return flights