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

Return flights

25 Dec - 31 Dec	Eurowings
31 Dec - 16 Jan	Eurowings
26 Dec - 31 Dec	Jet2
31 Dec - 08 Jan	Eurowings
31 Dec - 16 Jan	Ryanair	direct
31 Dec - 15 Jan	Ryanair	direct
31 Dec - 19 Jan	Ryanair	direct
31 Dec - 12 Jan	Ryanair	direct
31 Dec - 09 Jan	Ryanair	direct
29 Dec - 31 Dec	Jet2
29 Dec - 31 Dec	Ryanair	direct
28 Dec - 31 Dec	Jet2
28 Dec - 09 Jan	Jet2
31 Dec - 08 Jan	Ryanair	direct
31 Dec - 11 Jan	Ryanair	direct
31 Dec - 31 Dec	Pegasus Airlines
28 Dec - 31 Dec	Ryanair	direct
26 Dec - 28 Dec	Jet2
26 Dec - 31 Dec	Ryanair	direct
26 Dec - 29 Dec	Jet2

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 $147

Return flights