Cheapest return flights from Cardiff to Belfast in December from 100€

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

Return flights

18 Dec - 18 Jan Aer Lingus direct
16 Dec - 18 Dec Aer Lingus direct
11 Dec - 15 Dec Aer Lingus direct
17 Dec - 18 Dec Aer Lingus direct
10 Dec - 15 Dec Aer Lingus direct
02 Dec - 03 Dec Aer Lingus direct
05 Dec - 08 Dec Aer Lingus direct
03 Dec - 07 Dec Aer Lingus direct
01 Dec - 03 Dec Aer Lingus direct
04 Dec - 07 Dec Aer Lingus direct
05 Dec - 07 Dec Aer Lingus direct
22 Dec - 05 Jan Aer Lingus direct
21 Dec - 02 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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