Cheapest return flights from Cardiff to Dublin in December from $278

Best time to book flights for Cardiff (CWL) to Dublin (DUB) flights at AirHint

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

Return flights

04 Dec - 07 Dec Loganair
16 Dec - 17 Dec Loganair
05 Dec - 06 Dec Aer Lingus
12 Dec - 14 Dec Aer Lingus
12 Dec - 15 Dec Aer Lingus

Also check the deals for one-way flights from Cardiff to Dublin in December.

Skyscanner

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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