AirHint found the following cheapest return flights from Cardiff (CWL) to Belfast (BHD) in July 2026 (see full year).
Return flights
| 18 Jul - 20 Jul | Aer Lingus | direct | |
| 18 Jul - 21 Jul | Aer Lingus | direct | |
| 04 Jul - 07 Jul | Aer Lingus | direct | |
| 17 Jul - 20 Jul | Aer Lingus | direct | |
| 03 Jul - 05 Jul | Aer Lingus | direct |
Also check the deals for one-way flights from Cardiff to Belfast in July.
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