Cheap Flights from Cardiff to Dublin from $21

Frequently Asked Questions

• What are the cheapest flights from Cardiff to Dublin (CWL-DUB)?

  Based on Trip.com data, Ryanair offers one-way fares as low as $21 on Cheapest nonstop routes (e.g. CWL to DUB on Wed, Sep 9), while Ryanair offers Cheapest nonstop round-trips from $41 departing on Fri, Sep 11 and returning on Mon, Sep 14.

• Which airlines offer direct flights from Cardiff to Dublin?

  At the moment, you can catch a nonstop flight from Cardiff to Dublin with the following airlines, including: Ryanair Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long does it take to fly from Cardiff (CWL) to Dublin (DUB) and what is the distance?

  It takes around 1 hour to fly from Cardiff (CWL) to Dublin (DUB).

• When is the best time to book flights from Cardiff to Dublin?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Cardiff to Dublin is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Cardiff to Dublin?

  Based on Trip.com data in the past 4 weeks, there is 6 flight per week flying from Cardiff to Dublin. You can check the weekly schedule for popular airlines on this route below: Ryanair: S/M/T/W/T/F/S -- FR635 (07:47)

• How can I find the best deals on flights from Cardiff to Dublin?

  To find best deals on flights from Cardiff to Dublin, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Sep 9, with one-way flights priced at just $21.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Ryanair.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Dublin travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Cardiff (CWL) to Dublin (DUB) the cheapest?

  The cheapest months to fly from Cardiff to Dublin is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Cardiff to Dublin on?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Cardiff to Dublin on September 30, 2026 with Ryanair, with prices starting at $21.

• Which airports can I fly into Dublin from Cardiff?

  You can arrive at any of the following airports in Dublin: Dublin Airport (DUB). Flights from Cardiff Airport to Dublin Airport (CWL-DUB) are by far the most popular option for this route.

• Is there any time difference between Cardiff and Dublin?

  The time difference between Dublin and Cardiff is 0m.

• How do I change or cancel my ticket from Cardiff to Dublin?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Cardiff to Dublin?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Cardiff to Dublin is $279. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Cardiff to Dublin?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Cardiff to Dublin is $87. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Cardiff to Dublin on Trip.com?

  Enter Cardiff and Dublin, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the Cardiff to Dublin route?

  Ryanairare the most popular budget airlines flying from Cardiff to Dublin. Check baggage, seat and payment fees before comparing the final price.