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

Return flights

24 Sep - 01 Oct	Eurowings
27 Sep - 04 Oct	Eurowings
19 Sep - 28 Sep	Eurowings
03 Sep - 05 Sep	Electra Airways	direct
12 Sep - 20 Sep	Eurowings
06 Sep - 13 Sep	Eurowings
12 Sep - 19 Sep	Eurowings
27 Sep - 03 Oct	Eurowings
03 Sep - 10 Sep	Eurowings
19 Sep - 26 Sep	Eurowings
01 Sep - 28 Sep	Eurowings
05 Sep - 10 Sep	Eurowings
01 Sep - 06 Sep	Eurowings

Also check the deals for one-way flights from Duesseldorf to Bourgas 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 Bourgas in September from $226

Return flights