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

Return flights

30 Jul - 06 Aug	Aer Lingus	direct
29 Jul - 05 Aug	Aer Lingus	direct
30 Jul - 01 Aug	Aer Lingus
30 Jul - 31 Jul	Aer Lingus	direct
31 Jul - 08 Aug	Aer Lingus	direct
31 Jul - 05 Aug	Aer Lingus	direct
29 Jul - 31 Jul	Aer Lingus	direct
27 Jul - 06 Aug	Aer Lingus	direct
30 Jul - 01 Aug	Aer Lingus	direct
31 Jul - 07 Aug	Aer Lingus	direct
31 Jul - 04 Aug	Aer Lingus
27 Jul - 01 Aug	Aer Lingus

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

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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Cheapest return flights from Cardiff to Belfast in July from 173€

Return flights