Cheapest one-way flights from Cardiff to Dublin in September from 23€

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

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

One-Way flights

11 Sep Ryanair direct
04 Sep Ryanair direct
20 Sep Ryanair direct
13 Sep Ryanair direct
30 Sep Ryanair direct
27 Sep Ryanair direct
15 Sep Ryanair direct
22 Sep Ryanair direct
08 Sep Ryanair direct
05 Sep Ryanair direct

Also check the deals for return 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