AirHint found the following cheapest return flights from Cologne (CGN) to Dublin (DUB) in December 2025 (see full year).

Return flights

24 Dec - 31 Dec	Ryanair	direct
24 Dec - 29 Dec	Ryanair	direct
24 Dec - 28 Dec	Ryanair	direct
12 Dec - 15 Dec	Ryanair	direct
08 Dec - 11 Dec	Ryanair
12 Dec - 14 Dec	Ryanair	direct
05 Dec - 07 Dec	Ryanair	direct
05 Dec - 08 Dec	Ryanair	direct
08 Dec - 12 Dec	Ryanair
02 Dec - 05 Dec	Ryanair
29 Dec - 04 Jan	Ryanair
31 Dec - 04 Jan	Ryanair
31 Dec - 04 Jan	Ryanair	direct
31 Dec - 03 Jan	Ryanair
29 Dec - 04 Jan	Ryanair	direct
29 Dec - 03 Jan	Ryanair
29 Dec - 01 Jan	Ryanair
29 Dec - 01 Jan	Ryanair	direct
28 Dec - 04 Jan	Ryanair	direct
28 Dec - 02 Jan	Ryanair

Also check the deals for one-way flights from Cologne to Dublin 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 Cologne to Dublin in December from 75€

Return flights