Cheapest return flights from Cardiff to Belfast in December from $122

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

Return flights

09 Dec - 10 Dec Aer Lingus direct
15 Dec - 16 Dec Aer Lingus direct
17 Dec - 18 Dec Aer Lingus direct
09 Dec - 11 Dec Aer Lingus direct
26 Dec - 31 Dec Aer Lingus direct
24 Dec - 26 Dec Aer Lingus direct
04 Dec - 11 Dec Aer Lingus direct
06 Dec - 09 Dec Aer Lingus direct
03 Dec - 04 Dec Aer Lingus direct
04 Dec - 05 Dec Aer Lingus direct
30 Dec - 01 Jan Aer Lingus direct
17 Dec - 04 Jan Aer Lingus direct
30 Dec - 02 Jan Aer Lingus direct
29 Dec - 05 Jan Aer Lingus direct
12 Dec - 04 Jan Ryanair
12 Dec - 04 Jan Aer Lingus direct
30 Dec - 03 Jan Aer Lingus direct

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

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