£45 Find Cheap Flights from Cardiff to Northern Ireland – Compare and Save

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KAYAK's insights & trends for Cardiff to Northern Ireland flights

Get data-powered insights and trends into flights from Cardiff to Northern Ireland to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Cardiff to Northern Ireland?

Flight prices are typical for this route right now.

Flights to Northern Ireland from Cardiff usually cost between £103 and £159 in November.
The lowest price found in the past 5 days was £115 on Multiple Airlines (23 Nov–25 Nov).

What is the cheapest Cardiff to Northern Ireland flight route?

The cheapest ticket to Northern Ireland from Cardiff found in the last 5 days was to Belfast, at £91 return. The most popular route is from Cardiff (CWL) to Belfast City Airport (BHD), and the cheapest return airline ticket found on this route in the last 5 days was £91.

What is the cheapest time of day to fly to Northern Ireland?

The cheapest time of day to fly to Northern Ireland is generally in the morning, when retur flights cost £132 on average. The most expensive time of day to fly to Northern Ireland is generally in the morning, which is peak travel time and where the average cost of a ticket is £132.

What is the cheapest month to fly from Cardiff to Northern Ireland?

The cheapest month for flights from Cardiff to Northern Ireland is October, when tickets cost £117 (return) on average. On the other hand, the most expensive months are July and March, when the average cost of return tickets is £162 and £161 respectively.

What’s the cheapest day of the week to fly from Cardiff to Northern Ireland?

If you are looking for a flight deal from Cardiff to Northern Ireland, look for departures on Saturdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Northern Ireland, Sunday is the cheapest day to fly and Tuesday is the most expensive.

Good to know - Cheap tickets from Cardiff to Northern Ireland

Low season

January

Cheapest flight

£45
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (8% more expensive on average)
Flight from Cardiff to Belfast City Airport

FAQs - booking Northern Ireland flights

  • How does KAYAK find such low prices on flights from Cardiff to Northern Ireland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Cardiff to Northern Ireland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Cardiff to Northern Ireland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Cardiff to Northern Ireland is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Cardiff to Northern Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Cardiff to Northern Ireland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Cardiff to Northern Ireland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Cardiff to Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding a cheap flight from Cardiff to Northern Ireland

  • Looking for a cheap flight from Cardiff to Northern Ireland? 25% of our users found tickets from Cardiff to Northern Ireland for the following prices or less: Belfast £74 one-way - £105 round-trip

Reviews of the top airlines flying from Cardiff to Northern Ireland

 
Need help choosing which airline to fly with from Cardiff to Northern Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
Aer LingusOverall score based on 1838 reviews
7.1Entertainment
7.5Boarding
8.1Crew
7.2Comfort
6.7Food
Airline reviews

Very quick flight, efficient boarding, and clear and thorough instructions and attention from staff.

10.0 ExcellentErika, Oct 2026
Read more Aer Lingus reviews

Very quick flight, efficient boarding, and clear and thorough instructions and attention from staff.

They lost my bag so that is unfortunate.. still waiting for it

The flight from Dublin to London was short but they charged for any food or beverage. I have never paid for anything except alcohol on a flight before so imagine my shock at being charged nearly 4 pounds for a cup of tea. I once took an hour and a half flight (different airline) within South Africa and was served a complimentary dinner. It’s minor things like this that might make me hesitant to choose Aer Lingus over another similarly priced airline.

Excellent cabin crew. They helped a number of passengers with mobility challenges and a mother with a 3 year old and an infant. Better than most other airlines by far. Well done Eduardo!

Good, I slept the entire flight so I cannot add many inflight details

I didn't know if the plane was even go And the plane shook like it was from the same era as Indiana Jones

No snacks, drinks or coffee. No entertainment, not comfortable seats

Air Lingus was in no hurry to get us on the plane as sat at the gate a long time before they boarded us. Then they leave us on the tarmac for an hour. They were no help to let me know what I needed to do to get home. I had to navigate London Heathrow with 0 help from them.

There was a 6h delay with limited updates . When we got to Manchester the bus took ages to get to arrivals and we missed our train, dinner reservation. Basically lost a whole day due to arrivals Lingus!!

As four hour wait with no explanation as to why the delay Very unacceptable

Easyjet staff very helpful at airport as I need assistance. Flight slightly delayed both ways but soon made up the difference.

Flight on time clean and good legroom, what more could you ask on a one hour flight

There was a delay because they had to switch planes it wasn’t explained very well nor were there updates.

Whole way through - far more professional and slick than I expected

It was transportation nothing more. I will give a positive rating over Ryanair. We missed our Ryanair flight the night before and received rude and unconcerned treatment from the Ryanair customer service. It was late. We were very tired and stressed after doing our best to get to the airport. The so called customer service ladies were completely unconcerned from the start. Aside from that, the flight to London seemed to be their opportunity for advertising. No time to relax as attendants were constantly in the aisle selling. I will never fly Ryanair again!!

We accidentally purchased twice the bags we needed. Our fault, but the ticket was not clear to us, and it asked us to purchase bags at checkin. When we notified them to get credit back at the airport, they said to contact customer service. We flew the flight and then contracted customer service. They said no credits after the flight has flown. Not customer service oriented at all. They know we didn’t check that many bags and kept our money for a service they did not provide. Be aware and very careful of what you are purchasing from them because they will not make it right if there is an error.

Be sure to check bags for 23 kg,.(50 lbs) Coming from US I chose the wrong size luggage weight when I checked in on my phone, and had to pay more when I dropped it off

The on board air steward really made the journey. He was very entertaining

I was disappointed there was a 40 minute delay to flight

3 hours delayed Don’t understand why when you have paid for ‘speedy boarding’ they call you forward to then make you stand fir another 20 minutes in a confined space before boarding the plane.

More options for your flight from Cardiff to Northern Ireland

Complete your trip to Northern Ireland with a hotel stay or car hire