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

Return flights

29 Sep - 03 Oct	AJet	direct
21 Sep - 25 Sep	AJet
10 Sep - 18 Sep	AJet
12 Sep - 22 Sep	AJet	direct
15 Sep - 22 Sep	AJet	direct
15 Sep - 19 Sep	AJet	direct
19 Sep - 22 Sep	AJet	direct
24 Sep - 29 Sep	AJet	direct
03 Sep - 10 Sep	AJet
08 Sep - 11 Sep	Pegasus Airlines	direct
25 Sep - 29 Sep	AJet
26 Sep - 01 Oct	AJet
26 Sep - 02 Oct	AJet
26 Sep - 06 Oct	AJet
26 Sep - 02 Oct	Pegasus Airlines	direct
15 Sep - 12 Oct	flydubai
15 Sep - 02 Oct	flydubai

Also check the deals for one-way flights from Istanbul 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 Istanbul to Belgrade in September from $213

Return flights