Cheapest return flights from Cardiff to Belfast in January from $137

AirHint found the following cheapest return flights from Cardiff (CWL) to Belfast (BHD) in January 2026 (see full year).

Return flights

24 Jan - 26 Jan Aer Lingus direct
10 Jan - 12 Jan Aer Lingus direct
15 Jan - 17 Jan Aer Lingus direct
08 Jan - 11 Jan Aer Lingus direct
22 Jan - 25 Jan Aer Lingus direct
16 Jan - 18 Jan Aer Lingus direct
09 Jan - 12 Jan Aer Lingus direct
18 Jan - 19 Jan Aer Lingus direct
30 Jan - 02 Feb Aer Lingus direct
25 Jan - 15 Feb Aer Lingus direct

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

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