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

Return flights

21 Sep - 25 Sep	Etihad Airways
25 Sep - 01 Oct	IndiGo
30 Sep - 06 Oct	Turkish Airlines
01 Sep - 08 Sep	IndiGo
27 Sep - 07 Oct	Etihad Airways
20 Sep - 25 Sep	IndiGo
02 Sep - 15 Sep	IndiGo
01 Sep - 01 Sep	Emirates

Also check the deals for one-way flights from Singapore 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 Singapore to Belgrade in September from 634€

Return flights