AirHint found the following cheapest one-way flights from Cardiff (CWL) to Belfast (BHD) in August 2026 (see full year).
One-Way flights
| 18 Aug | Aer Lingus | direct | |
| 12 Aug | Aer Lingus | direct | |
| 25 Aug | Aer Lingus | direct | |
| 29 Aug | Aer Lingus | direct | |
| 30 Aug | Aer Lingus | direct | |
| 31 Aug | Aer Lingus | direct | |
| 28 Aug | Aer Lingus | direct |
Also check the deals for return flights from Cardiff to Belfast in August.
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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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