Cheapest return flights from Cardiff to Belfast in September from 112€

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

Return flights

29 Sep - 02 Oct Aer Lingus direct
30 Sep - 02 Oct Aer Lingus direct
24 Sep - 30 Sep Aer Lingus direct
24 Sep - 01 Oct Aer Lingus direct
30 Sep - 07 Oct Aer Lingus direct
23 Sep - 30 Sep Aer Lingus direct
23 Sep - 01 Oct Aer Lingus direct
21 Sep - 23 Sep Aer Lingus direct
27 Sep - 01 Oct Aer Lingus direct
22 Sep - 29 Sep Ryanair
24 Sep - 28 Sep Aer Lingus direct
25 Sep - 30 Sep Ryanair
28 Sep - 01 Oct Ryanair
25 Sep - 29 Sep Ryanair
26 Sep - 29 Sep Ryanair
20 Sep - 21 Sep Aer Lingus direct
28 Sep - 01 Oct Aer Lingus direct
25 Sep - 28 Sep Ryanair
26 Sep - 03 Oct Ryanair
26 Sep - 03 Oct Aer Lingus direct

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

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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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