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

Return flights

04 Dec - 15 Dec	Ryanair	direct
04 Dec - 07 Dec	Ryanair	direct
04 Dec - 14 Dec	Ryanair	direct
04 Dec - 05 Dec	Ryanair	direct
04 Dec - 08 Dec	Ryanair	direct
04 Dec - 06 Dec	Ryanair
01 Dec - 15 Dec	Ryanair	direct
01 Dec - 07 Dec	Ryanair	direct
04 Dec - 12 Dec	Ryanair	direct
01 Dec - 14 Dec	Ryanair	direct
28 Dec - 18 Jan	Ryanair	direct
28 Dec - 01 Jan	Ryanair	direct
22 Dec - 01 Jan	Ryanair	direct
21 Dec - 01 Jan	Ryanair	direct
14 Dec - 01 Jan	Ryanair	direct
19 Dec - 01 Jan	Ryanair	direct

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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Cheapest return flights from Cologne to Dublin in December from $89

Return flights