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

Return flights

17 Sep - 22 Sep	Eurowings	direct
20 Sep - 22 Sep	Eurowings	direct
03 Sep - 08 Sep	Eurowings	direct
13 Sep - 17 Sep	Eurowings	direct
17 Sep - 21 Sep	Eurowings
09 Sep - 13 Sep	Eurowings
09 Sep - 12 Sep	Eurowings
09 Sep - 15 Sep	Eurowings
15 Sep - 19 Sep	Ryanair
17 Sep - 05 Oct	Eurowings
06 Sep - 08 Sep	Eurowings	direct
28 Sep - 01 Oct	Air Serbia	direct
29 Sep - 04 Oct	Eurowings	direct
18 Sep - 05 Oct	Air Serbia
18 Sep - 05 Oct	Air Serbia	direct

Also check the deals for one-way flights from Duesseldorf 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 Duesseldorf to Belgrade in September from $117

Return flights