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

Return flights

17 Sep - 23 Sep	Ryanair
22 Sep - 24 Sep	Ryanair
30 Sep - 08 Oct	Ryanair
23 Sep - 24 Sep	Ryanair
23 Sep - 26 Sep	Ryanair
30 Sep - 01 Oct	Ryanair
29 Sep - 30 Sep	Ryanair
24 Sep - 26 Sep	Ryanair
20 Sep - 27 Sep	Eurowings
24 Sep - 01 Oct	Ryanair
27 Sep - 07 Oct	Ryanair
24 Sep - 28 Sep	Ryanair
24 Sep - 30 Sep	Ryanair
21 Sep - 23 Sep	Ryanair
27 Sep - 03 Oct	Eurowings
30 Sep - 02 Oct	Ryanair
26 Sep - 08 Oct	Eurowings	direct
29 Sep - 04 Oct	Ryanair
27 Sep - 04 Oct	Eurowings
26 Sep - 03 Oct	Eurowings

Also check the deals for one-way flights from Duesseldorf to Copenhagen 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 Copenhagen in September from 142€

Return flights