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Cheap flights from Cardiff to Dublin from £21

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to Dublin departing on 8/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap return flights

Ryanair Logo
07:55 - 08:55CWL-DUB
1h 00mdirect
Ryanair Logo
06:30 - 07:30DUB-CWL
1h 00mdirect
£32Ryanair
Find Deal
Thu, 10 Jul - Sat, 26 Jul
Ryanair Logo
09:00 - 10:00CWL-DUB
1h 00mdirect
Ryanair Logo
09:35 - 10:35DUB-CWL
1h 00mdirect
£32Ryanair
Find Deal
Sat, 30 Aug - Sun, 31 Aug
Ryanair Logo
13:10 - 14:10CWL-DUB
1h 00mdirect
Ryanair Logo
06:25 - 07:25DUB-CWL
1h 00mdirect
£33Ryanair
Find Deal
Mon, 25 Aug - Thu, 28 Aug
Ryanair Logo
16:20 - 17:20CWL-DUB
1h 00mdirect
Ryanair Logo
09:35 - 10:35DUB-CWL
1h 00mdirect
£36Ryanair
Find Deal
Tue, 1 Jul - Sun, 6 Jul
Ryanair Logo
16:20 - 17:20CWL-DUB
1h 00mdirect
Ryanair Logo
06:25 - 07:25DUB-CWL
1h 00mdirect
£38Ryanair
Find Deal
Tue, 1 Jul - Thu, 17 Jul
Ryanair Logo
16:20 - 17:20CWL-DUB
1h 00mdirect
Ryanair Logo
14:55 - 15:55DUB-CWL
1h 00mdirect
£42Ryanair
Find Deal
Tue, 8 Jul - Tue, 15 Jul
Ryanair Logo
09:00 - 10:00CWL-DUB
1h 00mdirect
Ryanair Logo
06:30 - 07:30DUB-CWL
1h 00mdirect
£46Ryanair
Find Deal
Sat, 19 Jul - Sat, 26 Jul
Ryanair Logo
16:20 - 17:20CWL-DUB
1h 00mdirect
Ryanair Logo
06:30 - 07:30DUB-CWL
1h 00mdirect
£49Ryanair
Find Deal
Tue, 29 Jul - Sat, 2 Aug
 Logo
20:20 - 19:45CWL-DUB
23h 25m2 stops
 Logo
09:35 - 10:35DUB-CWL
1h 00mdirect
Tue, 1 Jul - Sun, 6 Jul
 Logo
20:20 - 19:45CWL-DUB
23h 25m2 stops
 Logo
14:55 - 15:55DUB-CWL
1h 00mdirect
Tue, 1 Jul - Tue, 8 Jul

Ryanair flights from Cardiff to Dublin

Our best Ryanair deals on Cardiff to Dublin flight tickets
Ryanair
10 Jul
CWL07:55Cardiff Wales
1h 00m
DUB08:55Dublin
26 Jul
DUB06:30Dublin
1h 00m
CWL07:30Cardiff Wales
Ryanair
30 Aug
CWL09:00Cardiff Wales
1h 00m
DUB10:00Dublin
31 Aug
DUB09:35Dublin
1h 00m
CWL10:35Cardiff Wales
Ryanair
25 Aug
CWL13:10Cardiff Wales
1h 00m
DUB14:10Dublin
28 Aug
DUB06:25Dublin
1h 00m
CWL07:25Cardiff Wales

Aer Lingus flights from Cardiff to Dublin

Our best Aer Lingus deals on Cardiff to Dublin flight tickets
Aer Lingus
20 Jun
CWL09:00Cardiff Wales
13h 05m
2 stops
DUB22:05Dublin
21 Jun
DUB06:50Dublin
28h 40m
2 stops
CWL11:30Cardiff Wales
Aer Lingus
20 Jun
CWL09:00Cardiff Wales
13h 30m
2 stops
DUB22:30Dublin
21 Jun
DUB06:50Dublin
28h 40m
2 stops
CWL11:30Cardiff Wales

See travel insights to Dublin from

How to get the cheapest flight ticket from Cardiff to Dublin

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Dublin?

In general, September is the cheapest month to fly from Cardiff to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £47. If you aren’t able to travel to Dublin during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of £61.

What is the cheapest day to depart on your flight to Dublin?

On average, the least expensive day to fly to Dublin from Cardiff is on a Saturday. momondo users have found tickets for Saturday departures for as low as £56. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around £113. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.

What is the cheapest time of day to depart on your flight to Dublin?

Flying to Dublin from Cardiff in the evening is the least expensive time of day to depart. momondo users have found prices as low as £50 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £79 on average. Flights to Dublin from Cardiff in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Cardiff Wales to Dublin flight route?

Fly from Cardiff Wales to Dublin for the best Cardiff Wales - Dublin flight prices

How far in advance should I book a flight to Dublin?

You are more likely to see cheaper flights to Dublin from Cardiff when booking 4 weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around £73 when searching 4 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from Cardiff for as low as £46 on momondo.

What cabin class options are available on Cardiff Wales to Dublin flights?

There are 1 cabin classes available to choose from on Cardiff Wales to Dublin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Cardiff to Dublin flight prices changed over time?

As of June 2025, prices for Cardiff to Dublin flights are approximately 15% more expensive when compared to flights at the same time last year.

When to book flights from Cardiff to Dublin

Are you open to changing your travel dates? Check out the ideal times to fly from Cardiff to Dublin according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Cardiff to Dublin (CWL to DUB) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to Dublin

Best price found

£21

Fastest flight time

1h 00m

Direct flights

Mon, Tue, Wed, Fri, Sat and Sun

Airports in Dublin

1 airport
The best one-way flight to Dublin from Cardiff in the past 72 hours is £21. The best return flight deal from Cardiff to Dublin found on momondo in the last 72 hours is £32.
The fastest flight from Cardiff to Dublin takes 1h 00m
Direct flights go from Cardiff to Dublin on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. Airline offering direct flights is Ryanair..
There is 1 airport near Dublin: Dublin (DUB)

  • How far is Cardiff Wales to Dublin by plane?

    Dublin is 182.8 mi away from Cardiff Wales. Typically, this will take 1h 00m by plane in normal conditions.

  • When did momondo last update prices for flights from Cardiff Wales Airport to Dublin Airport?

    Prices for flights from Cardiff Wales Airport to Dublin Airport are updated daily.

  • How many operators does momondo search for flights from Cardiff Wales Airport to Dublin Airport?

  • How old do you have to be to fly from Cardiff Wales Airport to Dublin Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Cardiff Wales Airport to Dublin Airport.

  • What documentation or ID do you need to fly to Dublin Airport?

    The travel and health documents required for your trip to Dublin Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Dublin Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Cardiff to Dublin?

  • What is the most popular airline from Cardiff to Dublin?


Best airlines flying from Cardiff to Dublin

Compare and see reviews for airlines that fly from Cardiff to Dublin with momondo
Airline
Rating
Free Cancellation
Price
RyanairPriceFrom £29Free CancellationRating
6.8
5,121 reviews
Search Ryanair flights
Aer LingusPriceFrom £47Free CancellationRating
7.1
1,118 reviews
Search Aer Lingus flights
KLMPriceFrom £152Free CancellationRating
7.8
1,358 reviews
Search KLM flights
  • Ryanair Flights From Cardiff to Dublin

    The lowest priced Ryanair flight from Cardiff to Dublin from the last 72 hours was £40. Generally, Ryanair has 1 flight on this route every week with an average price of £90. Ryanair is rated 6.8/10 by our users.


Travelling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Swords
Kilkenny
Dundalk
Bray
Cavan
Athlone
Carlingford
Malahide
Wicklow
Drogheda
Kildare
Gorey
Mullingar
Enniscorthy
Arklow
Naas
Portmarnock
Tullamore
Leixlip
Maynooth

Why use momondo?

Why should I use momondo to find a flight deal from Cardiff to Dublin?

Finding the right flight to Dublin from Cardiff is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Dublin quick and easy, saving you time and money.

Can I find flights from Cardiff to Dublin with flexible booking policies on momondo?

Flights from Cardiff to Dublin with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Cardiff to Dublin?

Once you have performed a search for Cardiff to Dublin flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Cardiff to Dublin right now. Can momondo alert me if prices change?

Price alerts on flights to Dublin from Cardiff are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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