Cheapest return flights from Cardiff to Dublin in September from $73

Best time to book flights for Cardiff (CWL) to Dublin (DUB) flights at AirHint

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

Return flights

28 Sep - 11 Oct Ryanair direct
28 Sep - 18 Oct Ryanair direct
12 Sep - 22 Sep Ryanair direct
19 Sep - 20 Sep Ryanair direct
26 Sep - 11 Oct Ryanair direct
08 Sep - 22 Sep Ryanair direct
08 Sep - 09 Sep Ryanair direct
12 Sep - 15 Sep Ryanair direct
19 Sep - 22 Sep Ryanair direct
12 Sep - 14 Sep Ryanair direct
08 Sep - 15 Sep Ryanair direct
08 Sep - 14 Sep Ryanair direct
12 Sep - 21 Sep Ryanair direct
28 Sep - 19 Oct Ryanair direct
28 Sep - 17 Oct Ryanair direct
26 Sep - 17 Oct Ryanair direct
28 Sep - 05 Oct Ryanair direct
19 Sep - 05 Oct Ryanair direct
26 Sep - 05 Oct Ryanair direct

Also check the deals for one-way flights from Cardiff to Dublin 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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin