€18 Find Cheap Flights from the United Kingdom to Ireland

1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Ireland

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Useful Info

What is the cheapest flight to Ireland?

These are the best return prices found by users searching on KAYAK in the last 72 hours.

The cheapest ticket to Ireland from the United Kingdom found in the last 72 hours was to Dublin, at €92 return. The most popular route is Birmingham (BHX) to Dublin (DUB) and the cheapest return airline ticket found on this route in the last 72 hours was €92.

What is the cheapest month to fly from the United Kingdom to Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from the United Kingdom to Ireland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from the United Kingdom to Ireland is June, when tickets cost €53 (return) on average. On the other hand, the most expensive months are September and October, when the average cost of round-trip tickets is €237 and €233 respectively.

How far in advance should I book a flight from the United Kingdom to Ireland?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Ireland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from the United Kingdom to Ireland, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Which is the cheapest airport to fly into in Ireland?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Ireland is Dublin Airport (DUB), with an average flight price of €124.


Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight€18
Best time to beat the crowds (26% less expensive on average)
Most popular time to fly (6% more expensive on average)
Flight from Birmingham to Dublin

Flights from the United Kingdom to Ireland: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from the United Kingdom to Ireland 
DeborahFlew with Aer LingusLHR-DUBJun 2025
Heathrow seems to have a lot of plane traffic so make sure you have a good cushion of time if you have connecting flights. I had a 2 hour layover but ended up having to run to make sure I got to the other gate in time.
Verified travelerFlew with Aer LingusLHR-DUBJun 2025
If you’re doing a transfer speak to someone at the desk don’t use an automated kiosk
KillianFlew with British AirwaysLCY-DUBMay 2025
Dublin airport a shambles when it comes to collecting luggage or getting a cab. Allow plenty of extra time.
ThomasFlew with Aer LingusLHR-DUBOct 2024
You will likely have to walk a lot more than you might expect to make a connection.

FAQs for booking flights from the United Kingdom to Ireland

  • Do I need to use my passport to enter Ireland?

    Ireland, along with the UK, is a member of the Common Travel Area. British citizens travelling from the UK will not require a passport when entering Ireland. However, Irish immigration officers will look at your ID when you arrive in Ireland and may ask to see your passport, especially if you were not born in the UK. If you hold British Citizenship and use your passport to enter Ireland, you do not require a visa. Just ensure that your passport will be valid for your entire stay in Ireland.

  • Which flights to Ireland should I look at if I want to see the Cliffs of Moher?

    The Cliffs of Moher are located on Ireland’s west coast, so you should look at flights to Ireland that fly to Shannon Airport, which is the primary airport serving the west coast and also the closest. From the airport, you can hire a car and drive approx. 1h, take a taxi, or travel by bus (approx. 2h 40min, the journey is not direct).

  • Which flights to Ireland should I look at if I want to see the Rock of Cashel?

    You should look at flights to Ireland that land in Shannon Airport, as it is the closest major international airport to Cashel (about 54 mi). From the airport, you can choose to rent a car and drive approx. 1h, take a taxi, or catch a bus (approx. 4h).

  • Where can I see the Book of Kells?

    The Book of Kells Exhibition is located in Trinity College Dublin, so the nearest airport is Dublin airport. Dublin airport offers a service known as Aircoach, most of which will travel through central Dublin, where Trinity College is located. This is the most convenient way to travel from the airport, but you can still choose to take a taxi or bus.

  • How does KAYAK find such low prices on flights from the United Kingdom to 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 the United Kingdom to Ireland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from the United Kingdom to 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 the United Kingdom to 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 the United Kingdom to 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 the United Kingdom to 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 the United Kingdom to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Ireland?

    Based on KAYAK data, the cheapest day to fly to Ireland is Thursday when return tickets can be as cheap as €113. On the other hand, the most expensive day to fly is Tuesday, when return prices are €322 on average.

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

    The cheapest time of day to fly to Ireland is generally in the morning, when round-trip flights cost €164 on average. Morning departures are around 3% cheaper than evening flights, on average. The most expensive time of day to fly to Ireland is generally in the afternoon, which is peak travel time and where the average cost of a ticket is €335.

Top tips for finding a cheap flight out of the United Kingdom

  • The 5 main international airports in Ireland are: Dublin Airport (DUB) on the east coast, Cork Airport (ORK) on the south coast, Knock Airport (NOC) in the north west and the airport of Shannon (SNN) on the west coast. Each airport is the primary airport of its respective region, so you can choose which flights to Ireland suit you best based on where you would like to visit.
  • Certain airports in the UK also offer flights to Donegal (CFN) and Kerry airports (KIR). These airports are less busy but may only have very basic facilities.
  • Dublin Airport is probably the best one to fly to if you would like to visit multiple cities, as it offers the most options when it comes to domestic flights throughout Ireland. Cork Airport is also another good option.
  • Car seats are mandatory for children from 8 months to 4 years old when travelling in a car, so you might have to bring your own or rent one if you are going to be travelling by car in Ireland.
  • The best way to travel around Ireland is by car or public transport, given its size. However, you may need to take a plane to visit the Aran Islands from the mainland.

Reviews of the top airlines flying from the United Kingdom to Ireland

 
Need help choosing which airline to fly with from the United Kingdom to 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.
7.1
Aer LingusOverall score based on 1140 reviews
7.0Comfort
7.2Boarding
6.8Entertainment
8.0Crew
6.4Food
Airline reviews

The ease of boarding was good. I wish they had something to eat on the plane.

8.0 ExcellentBenjamin, Jun 2025LHR - DUB
Read more Aer Lingus reviews

The ease of boarding was good. I wish they had something to eat on the plane.

The check in process at CDG was absolutely unacceptable. We arrived to the airport 3 hours and 20 minutes before our departure time, waited in line for 1 hour and 30 minutes to check in (despite having checked in online and only needing to check a bag), then were forced to check all of our rolling luggage despite the fact that all were compliant with carry-on requirements. The staff at the desk were rude and there were only two desks open, while eight people were working. The check in desk wasn’t even opened on time (3 hours prior to departure) and there was no communication about when it would open or why there was a delay. We feared missing our flight because the departure board was not updated, so rushed to our gate to board once we were through security because it was 20 minutes prior to departure, only to wait another 30 minutes before boarding even started. Communication was lacking throughout the process. What a horrible end to our trip.

The check in process at CDG was absolutely unacceptable. We arrived to the airport 3 hours and 20 minutes before our departure time, waited in line for 1 hour and 30 minutes to check in (despite having checked in online and only needing to check a bag), then were forced to check all of our rolling luggage despite the fact that all were compliant with carry-on requirements. The staff at the desk were rude and there were only two desks open, while eight people were working. We feared missing our flight because the departure board was not updated, so rushed to our gate to board once we were through security because it was 20 minutes prior to departure, only to wait another 30 minutes before boarding even started. Communication was lacking throughout the process. What a horrible end to our trip.

Seats were less comfortable and tight from Newark to Dublin, than my second flight ( small segment from Dublin to Lyon). Movie audio was with frying sound overall. Yet the worst was as follows: one male, (dark hair , glasses on) from the crew member was so cold and rough, while I remained with constancy polite and kind. Per exple with the noise level I could not hear him at first for beverages, he rolled his eyes at the third times I finally heard him. From the start, loading my small hand bags , he directly spoke to me and said “ I had to keep my shopping bad by my seat, under , while there was sufficient room and I was among the last to sit. I show him the space , his face was always dull, stoic, not welcoming as the usual crew members from any airline companies are. When I think of my experience I liard w Aer Lingus, this is the image that gets back to me. Needless to say that as a passenger and client, I felt belittled since all this happened in front of the surrendering passengers. It s an affront and not a pleasant feeling especially when being traveling which oftentimes involves stress with carrying, and making it on time. I m not happy with the experience I had to be honest and I fly four times a year. Thank you for allowing me to share this statement with your company.

Really helpful staff at the airport and the flight was comfortable with good entertainment options and food service

The flight was delayed by about an hour, but the staff and signs at the airport never actually said it was delayed. At the expected boarding time, we were told we would be boarding in about 10 minutes, then 20 minutes passed, and were told again that we would board in about 10 minutes. That happened multiple times, such that "10 minutes" turned into an hour.

The flight was delayed by about an hour, but the staff and signs at the airport never actually said it was delayed. We were told we'd be boarding in about 10 minutes, then 20 minutes passed, and were told again that we would board in about 10 minutes. That happened multiple times, such that "10 minutes" turned into an hour.

It was fine. We were delayed leaving but a situation of too many planes, not the airlines fault.

One cold drinks service. No snacks with drinks. No tomato juice or apple juice, coke - only fanta or sprite then ran out of that. Went to gally after meal service no one there / no self service for water at least. Waited 25 min for cabin crew to assist. No recycling of cardboard/ plastic - all put to garbage. Breakfast was a nutrigrain bar and an orange juice. Also I'm sure I booked a flight with checked luggage allowance but had to buy extra when I had my booking confirmation. Movies were good. Chairs comfy. Pillow and blanket and ac vents.

I would definitely use a Linus again, the price was right, the service is excellent. No delays. Wish I had a direct flight from my hometown Detroit.

The food was very good and it came multiple times

Flight from LGW to JFK delayed by 4 hrs No explanation given until the pilot said the delay due to planned maintenance on the aircraft

We arrived late to London, and consequently were 5 min. late to be allowed through security for our next flight. Even though dozens of people missed the same flight, BA did not radio ahead to hold open security for an extra 5-10 min. to allow people to get on the flight. This caused an additional 6 hour delay in London after waiting over an hour in Customer Service to get rebooked. They did not have enough staff on hand to help people in a timely manner. Not at all happy with the BA's customer care or customer service.

All service prior to the flight was terrible: online check-in not working, no customer service tel,, multiple airport scanners not working, A huge mess.

CONSTANT ERROR MESSAGE THAT THE WIFI COULD NOT BE PURCHASED DUE TO INABILITY TO CONNECT PAYMENT SYSTEM VIA SATELLITE. THIS HAPPENED IN BOTH DIRECTIONS. THE MAIN REASON I TRAVEL IN PRIORITY IS TO BE ABLE TO WORK FOR WHICH I NEED ACCESS TO INTERNET. .

They lost my luggage. Lady who was helping with it in Austin was rude. Not very helpful!

Waited 3.25 hours in plane only to have the flight cancelled.

The business class seat was an uncomfortable conversion of a main cabin seat well below the quality of even the budget carriers in the US. I would have never paid for business class if would have known I get the same seat as main cabin. BA has gone down hill significantly in this class of service.

More space, of course. a footrest! more room to walk. Movie selection was awful. Some good documentaries would help if the movies can't be better. The flight itself was great, crew was great.

I had a great experience on this flight! The crew was extremely helpful and attentive. Seats are very comfortable and the in flight entertainment was excellent.

Book cheap flights from the United Kingdom to Ireland

Recent return flight deals

10/7Thu
directRyanair
0h 55mMAN-DUB
13/7Sun
directRyanair
1h 00mDUB-MAN
€21
2/8Sat
directRyanair
1h 05mBHX-DUB
12/8Tue
directRyanair
1h 05mDUB-BHX
€29
13/8Wed
directRyanair
1h 05mBHX-DUB
20/8Wed
directRyanair
1h 05mDUB-BHX
€30
17/7Thu
direct
1h 05mBHX-DUB
21/7Mon
direct
1h 10mDUB-BHX
€55
12/7Sat
direct
0h 55mMAN-DUB
15/7Tue
direct
1h 05mDUB-MAN
€55
19/7Sat
directAer Lingus
1h 15mMAN-DUB
20/7Sun
directAer Lingus
1h 05mDUB-MAN
€69
10/7Thu
directAer Lingus
1h 05mBHX-DUB
13/7Sun
directAer Lingus
1h 10mDUB-BHX
€76
5/8Tue
directBritish Airways
1h 30mLHR-DUB
13/8Wed
directBritish Airways
1h 40mDUB-LHR
€78
11/8Mon
directBritish Airways
1h 25mLHR-DUB
13/8Wed
directBritish Airways
1h 40mDUB-LHR
€80
5/8Tue
1 stopKLM
4h 50mLCY-DUB
13/8Wed
1 stopKLM
3h 35mDUB-LCY
€194

Search by stops

Search by airline

Search by price

Recent one-way flight deals

30/7Wed
directRyanair
1h 05mBHX-DUB
€18
5/7Sat
directRyanair
1h 00mLBA-DUB
€18
31/7Thu
directRyanair
1h 20mSTN-DUB
€18
8/11Sat
directRyanair
1h 00mMAN-DUB
€44
28/7Mon
directAer Lingus
1h 05mLBA-DUB
€49
26/8Tue
directBritish Airways
1h 30mLHR-DUB
€50
29/7Tue
directBritish Airways
1h 30mLHR-DUB
€52
6/7Sun
directAer Lingus
1h 00mMAN-DUB
€54
14/7Mon
1 stop
5h 40mMAN-DUB
€55
28/7Mon
1 stop
5h 40mMAN-DUB
€59

Search by stops

Search by airline

Search by price

Last minute flights to Ireland

Last minute flight, train and bus deals

3/7Thu
directRyanair
1h 00mLBA-DUB
10/7Thu
directRyanair
1h 00mDUB-LBA
€33
5/7Sat
directRyanair
0h 55mMAN-DUB
6/7Sun
directRyanair
1h 00mDUB-MAN
€33
5/7Sat
directAer Lingus
1h 15mMAN-DUB
7/7Mon
directAer Lingus
1h 15mDUB-MAN
€67
5/7Sat
direct
1h 00mLBA-DUB
9/7Wed
direct
1h 25mDUB-LBA
€68
1/7Tue
direct
1h 05mLPL-DUB
3/7Thu
direct
0h 55mDUB-LPL
€77
3/7Thu
directAer Lingus
1h 20mLBA-DUB
7/7Mon
directAer Lingus
1h 05mDUB-LBA
€83
3/7Thu
directBritish Airways
1h 25mLHR-DUB
10/7Thu
directBritish Airways
1h 20mDUB-LHR
€97
3/7Thu
directBritish Airways
1h 25mLHR-DUB
10/7Thu
directBritish Airways
1h 20mDUB-LHR
€104
1/7Tue
multi-stopVueling
17h 00mLGW-DUB
8/7Tue
multi-stopVueling
11h 55mDUB-LGW
€212
1/7Tue
multi-stopVueling
17h 00mLGW-DUB
15/7Tue
multi-stopVueling
11h 55mDUB-LGW
€226

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to Ireland

Cabin class types available on flights to Ireland

Cabin classes available on flights to Ireland. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.