Cheapest return flights from Cardiff to Belfast in September from 134€

Best time to book flights for Cardiff (CWL) to Belfast (BHD) flights at AirHint

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

Return flights

09 Sep - 13 Sep Aer Lingus direct
01 Sep - 05 Sep Aer Lingus direct
18 Sep - 22 Sep Aer Lingus direct
05 Sep - 08 Sep Aer Lingus direct
04 Sep - 09 Sep Aer Lingus direct
05 Sep - 07 Sep Aer Lingus direct
08 Sep - 10 Sep Aer Lingus direct
05 Sep - 09 Sep Aer Lingus direct
05 Sep - 10 Sep Aer Lingus direct

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

Skyscanner

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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