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

Return flights

24 Sep - 30 Sep	Wizz Air Malta
10 Sep - 12 Sep	Ryanair
13 Sep - 17 Sep	Ryanair
30 Sep - 01 Oct	Ryanair
30 Sep - 02 Oct	Ryanair
17 Sep - 17 Sep	Ryanair
27 Sep - 01 Oct	FlyOne (Romania)
17 Sep - 20 Sep	Ryanair
13 Sep - 16 Sep	Ryanair
09 Sep - 30 Sep	Ryanair
10 Sep - 17 Sep	Ryanair
17 Sep - 26 Sep	Wizz Air
13 Sep - 20 Sep	Ryanair
24 Sep - 02 Oct	Ryanair
01 Sep - 01 Oct	Ryanair
15 Sep - 02 Oct	Ryanair
26 Sep - 01 Oct	Brussels Airlines	direct
28 Sep - 01 Oct	Ryanair
24 Sep - 02 Oct	Brussels Airlines	direct
15 Sep - 02 Oct	Brussels Airlines	direct

Also check the deals for one-way flights from Brussels 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 Brussels to Copenhagen in September from $122

Return flights