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

Return flights

18 Sep - 22 Sep	Air Serbia
16 Sep - 30 Sep	easyJet
15 Sep - 25 Sep	easyJet
27 Sep - 30 Sep	easyJet
25 Sep - 28 Sep	easyJet
27 Sep - 28 Sep	Air Serbia	direct
26 Sep - 28 Sep	Air Serbia	direct
17 Sep - 21 Sep	Air Serbia	direct
27 Sep - 30 Sep	Air Serbia	direct
01 Sep - 08 Sep	easyJet

Also check the deals for one-way flights from Paris 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 Paris to Belgrade in September from $180

Return flights