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Cheap flights from Cardiff to Dublin from £18

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — DUB
20 Aug — 27 Aug1
1 adult

Cheapflights Tip: The best prices from Cardiff Wales to Dublin are usually found in September or October, booked 27 days in advance, depart on a Thursday or Tuesday and return on a Thursday

Cheap flight deals from Cardiff to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to Dublin (DUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 August 2025.

Round-trip from

£37

One-way from

£18

Popular in

February

Cheapest in

September

Average price

£71

Good round-trip deal

£50 or less

Good one-way deal

£47 or less
Ryanair
  • Ryanair
  • 13/9-14/9
  • Nonstop
  • 2h 00m total
  • Cardiff to Dublin
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Ryanair
  • Ryanair
  • 26/8
  • Nonstop
  • 1h 00m total
  • Cardiff to Dublin
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£5 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Cardiff Wales to Dublin.
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Price to beat on a one-way flight from Cardiff Wales to Dublin.
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Find flight deals from Cardiff to Dublin

Cheapest flights from Cardiff to Dublin
Explore the most affordable flight options available from Cardiff to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 August 2025.

Sat 13/909:00CWL - DUB
Nonstop1h 00mRyanair
Sun 14/909:35DUB - CWL
Nonstop1h 00mRyanair
Deal found 13/8£37
Fri 19/912:25CWL - DUB
Nonstop1h 00mRyanair
Sun 21/909:35DUB - CWL
Nonstop1h 00mRyanair
Deal found 14/8£38
Sat 13/909:00CWL - DUB
Nonstop1h 00mRyanair
Fri 19/911:00DUB - CWL
Nonstop1h 00mRyanair
Deal found 14/8£44
Sat 27/909:00CWL - DUB
Nonstop1h 00mRyanair
Sun 28/909:35DUB - CWL
Nonstop1h 00mRyanair
Deal found 13/8£49
Thu 21/807:55CWL - DUB
Nonstop1h 00mRyanair
Sat 23/806:30DUB - CWL
Nonstop1h 00mRyanair
Deal found 15/8£53
Tue 26/816:20CWL - DUB
Nonstop1h 00mRyanair
Thu 28/806:25DUB - CWL
Nonstop1h 00mRyanair
Deal found 14/8£54
Tue 19/816:20CWL - DUB
Nonstop1h 00mRyanair
Sat 23/806:30DUB - CWL
Nonstop1h 00mRyanair
Deal found 13/8£55
Sat 13/909:00CWL - DUB
Nonstop1h 00mRyanair
Mon 15/911:45DUB - CWL
Nonstop1h 00mRyanair
Deal found 15/8£56
Thu 6/1110:30CWL - DUB
Nonstop1h 05mRyanair
Sun 9/1119:50DUB - CWL
Nonstop1h 05mRyanair
Deal found 13/8£62
Fri 19/912:25CWL - DUB
Nonstop1h 00mRyanair
Mon 22/911:45DUB - CWL
Nonstop1h 00mRyanair
Deal found 15/8£63
Fri 21/1122:25CWL - DUB
Nonstop1h 05mRyanair
Mon 24/1122:00DUB - CWL
Nonstop1h 05mRyanair
Deal found 13/8£65
Fri 24/1012:25CWL - DUB
Nonstop1h 00mRyanair
Sun 26/1008:45DUB - CWL
Nonstop1h 05mRyanair
Deal found 13/8£67

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff to Dublin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 August 2025.
Use the filters below to find and compare flights from Cardiff to Dublin that are best for you.

Fly from

Cardiff

Fly to

Dublin

Route

Depart

Return

Price

CardiffDublin

CWL - DUB

CWLDUB

Cardiff Wales

Sat 13/9

09:00-10:00

Nonstop1h 00m

Dublin

Sun 14/9

09:35-10:35

Nonstop1h 00m

£37

CardiffDublin

CWL - DUB

CWLDUB

Cardiff Wales

Fri 19/9

12:25-13:25

Nonstop1h 00m

Dublin

Sun 21/9

09:35-10:35

Nonstop1h 00m

£38

CardiffDublin

CWL - DUB

CWLDUB

Cardiff Wales

Sat 13/9

09:00-10:00

Nonstop1h 00m

Dublin

Fri 19/9

11:00-12:00

Nonstop1h 00m

£44

CardiffDublin

CWL - DUB

CWLDUB

Cardiff Wales

Sat 27/9

09:00-10:00

Nonstop1h 00m

Dublin

Sun 28/9

09:35-10:35

Nonstop1h 00m

£49

CardiffDublin

CWL - DUB

CWLDUB

Cardiff Wales

Tue 14/10

16:20-17:20

Nonstop1h 00m

Dublin

Thu 16/10

06:25-07:25

Nonstop1h 00m

£53

CardiffDublin

CWL - DUB

CWLDUB

Cardiff Wales

Sat 15/11

23:45-00:50

Nonstop1h 05m

Dublin

Mon 17/11

22:00-23:05

Nonstop1h 05m

£53

CardiffDublin

CWL - DUB

CWLDUB

Cardiff Wales

Thu 18/9

07:55-08:55

Nonstop1h 00m

Dublin

Sun 21/9

09:35-10:35

Nonstop1h 00m

£54

CardiffDublin

CWL - DUB

CWLDUB

Cardiff Wales

Thu 11/9

07:55-08:55

Nonstop1h 00m

Dublin

Sat 13/9

06:30-07:30

Nonstop1h 00m

£54

CardiffDublin

CWL - DUB

CWLDUB

Cardiff Wales

Tue 9/9

16:20-17:20

Nonstop1h 00m

Dublin

Tue 16/9

14:55-15:55

Nonstop1h 00m

£54

CardiffDublin

CWL - DUB

CWLDUB

Cardiff Wales

Tue 26/8

16:20-17:20

Nonstop1h 00m

Dublin

Thu 28/8

06:25-07:25

Nonstop1h 00m

£54

Flights are sorted by cheapest return flights first.

Deals found on 14/8

Showing 1-10 of 20 results
1
2

Best time to book a flight from Cardiff to Dublin

Have a flexible travel schedule? Discover the best time to fly to Dublin from Cardiff with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Cardiff to Dublin

How far ahead should I book a flight from Cardiff to Dublin?

Use this chart to determine the optimal time to book a return flight from Cardiff to Dublin. Price data was last updated on 8 August 2025.

To ensure you get the cheapest price possible for a flight from Cardiff to Dublin, you should look to book at least 27 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Cardiff to Dublin?

Currently, January is the cheapest month in which you can book a flight from Cardiff to Dublin (average of £71). Flying from Cardiff to Dublin in August is currently the most expensive (average of £93). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CWL to DUB?

Find hourly flight availability from Cardiff to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 August 2025.

When flying from Cardiff to Dublin, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 26% versus a flight at midday.

What is the cheapest day to fly from Cardiff to Dublin?

Use this chart to determine the cheapest time to fly return from Cardiff to Dublin. Price data was last updated on 10 August 2025.

Travellers seeking maximum savings on their Cardiff to Dublin flight should consider departing on Saturday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dublin. Reviews last updated 15 August 2025.
Get a feel of what it's like to fly with KLM, Aer Lingus, andRyanair from Cardiff to Dublin by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,384 reviews
Check prices

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,384 reviews
KLM
7.8
Good
1,384 reviews
Check prices

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Aer Lingus
7.1
Good
1,214 reviews
KLM
7.8
Good
1,384 reviews
Check prices

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Ryanair
6.8
Okay
5,153 reviews
KLM
7.8
Good
1,384 reviews
Check prices

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Cardiff to Dublin flight route?

    Within the past month, 1,903 users have taken a look at flights from Cardiff Wales to Dublin.

  • What are the cheapest airlines flying from Cardiff to Dublin round-trip?

    Cheapflights users have booked flights from Cardiff to Dublin round-trip from £31. Other airlines that can offer you cheap pricing are Aer Lingus, from £45, and KLM, from £152. These flights start at 59% lower than the current average price 3 months from now.

  • What are the cheapest flights from Cardiff to Dublin?

    On average you can expect to pay £74 for a flight from Cardiff to Dublin. The cheapest flight overall is £19 while the most popular route, (Cardiff Wales - Dublin) is currently priced at £32.

  • Can I find deals for flights from Cardiff to Dublin that include hotel bookings?

    Yes. In addition to deals on Cardiff to Dublin flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Cardiff to Dublin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to Dublin.

  • Can I find deals for business class flights from Cardiff to Dublin?

    Yes. Cheapflights offers flight deals from Cardiff to Dublin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Cardiff to Dublin?

    Currently, January is the cheapest month in which you can book a flight from Cardiff to Dublin (average of £71). Flying from Cardiff to Dublin in August is currently the most expensive (average of £93). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Dublin?

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

Browse thousands of different options on Cheapflights for your next trip

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Fly from Cardiff to Dublin on these airlines

Choose from the following airlines for your flight from Cardiff to Dublin. Flights are based on user searches made on Cheapflights and were last updated on 15 August 2025.
Ryanair flights from Cardiff Wales to Dublin
KLM flights from Cardiff Wales to Dublin
Aer Lingus flights from Cardiff Wales to Dublin

Top 3 airlines flying from Cardiff to Dublin

Discover the top 3 airlines that operate flights from Cardiff to Dublin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 August 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£31Average£69FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£45Average£99FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
KLMCheapest£152Average£189FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Cardiff to Dublin?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dublin from Cardiff today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Dublin?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Cardiff to Dublin for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Cardiff to Dublin with no change fees?

Yes, we can. To see specific flights from Cardiff to Dublin with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Cardiff to Dublin become cheaper?

Yes, Cheapflights offers price alerts on Cardiff to Dublin flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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