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

Return flights

06 Sep - 14 Sep	China Southern
02 Sep - 17 Sep	China Southern
14 Sep - 27 Sep	Turkish Airlines
14 Sep - 20 Sep	Turkish Airlines
02 Sep - 18 Sep	Turkish Airlines
30 Sep - 07 Oct	Turkish Airlines
14 Sep - 03 Oct	Turkish Airlines
22 Sep - 27 Oct	Qatar Airways
30 Sep - 11 Oct	Emirates
21 Sep - 10 Oct	Turkish Airlines
27 Sep - 12 Oct	Emirates
27 Sep - 04 Oct	Qatar Airways

Also check the deals for one-way flights from Sydney 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 Sydney to Belgrade in September from $1261

Return flights