Cheapest return flights from Cardiff to Belfast in December from $136

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

Return flights

11 Dec - 16 Dec Aer Lingus direct
03 Dec - 06 Dec Aer Lingus direct
09 Dec - 11 Dec Aer Lingus direct
02 Dec - 04 Dec Aer Lingus direct
08 Dec - 11 Dec Aer Lingus direct
13 Dec - 16 Dec Aer Lingus direct
13 Dec - 17 Dec Aer Lingus direct
01 Dec - 02 Dec Aer Lingus direct
13 Dec - 14 Dec Aer Lingus direct
06 Dec - 07 Dec Aer Lingus direct
13 Dec - 01 Jan Aer Lingus direct
31 Dec - 01 Jan Aer Lingus direct
30 Dec - 11 Jan Aer Lingus direct
13 Dec - 02 Jan Aer Lingus direct
30 Dec - 05 Jan Aer Lingus direct
13 Dec - 03 Jan Aer Lingus direct
27 Dec - 01 Jan Aer Lingus direct
30 Dec - 04 Jan Aer Lingus direct

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

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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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