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

Return flights

09 Dec - 16 Dec	easyJet
09 Dec - 11 Dec	easyJet
05 Dec - 06 Dec	Ryanair
09 Dec - 12 Dec	easyJet
13 Dec - 10 Jan	Ryanair
02 Dec - 06 Dec	Ryanair
01 Dec - 06 Dec	Ryanair
08 Dec - 13 Dec	Ryanair
10 Dec - 12 Dec	easyJet
02 Dec - 09 Dec	easyJet
13 Dec - 16 Dec	easyJet
17 Dec - 14 Jan	easyJet
31 Dec - 01 Jan	Ryanair
28 Dec - 06 Jan	Brussels Airlines	direct
17 Dec - 14 Jan	Brussels Airlines	direct
23 Dec - 01 Jan	Ryanair
29 Dec - 06 Jan	Brussels Airlines	direct
30 Dec - 06 Jan	Scandinavian Airlines
30 Dec - 01 Jan	Scandinavian Airlines
20 Dec - 01 Jan	Ryanair

Also check the deals for one-way flights from Brussels to Copenhagen in December.

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 December from $139

Return flights