€27 Find Cheap Flights from London to Ireland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Ireland departing on 21/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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Best Ireland Flight Deals from London

Cheapest return prices found by our users on KAYAK in the last 72 hours
Dublin
Dublindirect€43
Cork
Corkdirect€43
Shannon
Shannondirect€37
Knock
Knockdirect€42
Donegal
Donegal1 stop€134
Milltown (Kerry)
Milltown (Kerry)direct€51
Dublin
Dublindirect€43
Cork
Corkdirect€43
Shannon
Shannondirect€37
Knock
Knockdirect€42
Donegal
Donegal1 stop€134
Milltown (Kerry)
Milltown (Kerry)direct€51

Cheap Flights from London to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Ireland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Ireland

gio, 18 set - dom, 21 set
Ryanair Logo
18:25 - 19:50LGW-DUB
1h 25mdirect
Ryanair Logo
06:45 - 08:15DUB-LGW
1h 30mdirect
€43Ryanair
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ven, 12 set - ven, 19 set
Ryanair Logo
22:45 - 00:10STN-ORK
1h 25mdirect
Ryanair Logo
20:55 - 22:20ORK-STN
1h 25mdirect
€43Ryanair
Find Deal
lun, 3 nov - dom, 9 nov
 Logo
06:30 - 07:50STN-DUB
1h 20mdirect
 Logo
06:30 - 07:50DUB-STN
1h 20mdirect
lun, 10 nov - lun, 10 nov
 Logo
10:15 - 11:35STN-DUB
1h 20mdirect
 Logo
21:40 - 23:00DUB-STN
1h 20mdirect
sab, 11 ott - lun, 13 ott
British Airways Logo
06:15 - 07:40LHR-DUB
1h 25mdirect
British Airways Logo
11:05 - 12:35DUB-LHR
1h 30mdirect
€81British Airways
Find Deal
sab, 11 ott - lun, 13 ott
British Airways Logo
06:15 - 07:40LHR-DUB
1h 25mdirect
British Airways Logo
11:05 - 12:35DUB-LHR
1h 30mdirect
€82British Airways
Find Deal
mar, 23 set - mar, 30 set
Aer Lingus Logo
22:25 - 23:45LHR-ORK
1h 20mdirect
Aer Lingus Logo
20:30 - 21:45ORK-LHR
1h 15mdirect
€107Aer Lingus
Find Deal
mar, 23 set - mar, 30 set
Aer Lingus Logo
22:25 - 23:45LHR-ORK
1h 20mdirect
Aer Lingus Logo
20:30 - 21:45ORK-LHR
1h 15mdirect
€108Aer Lingus
Find Deal
mar, 4 nov - sab, 29 nov
KLM Logo
15:45 - 23:25LHR-ORK
7h 40m1 stop
KLM Logo
06:10 - 12:05ORK-LHR
5h 55m1 stop
€181KLM
Find Deal
sab, 11 ott - mar, 14 ott
KLM Logo
12:10 - 22:25LCY-ORK
10h 15m1 stop
KLM Logo
06:00 - 07:15ORK-LCY
25h 15m1 stop
€235KLM
Find Deal
Booking Insights

KAYAK's insights & trends for London to Ireland flights

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

What is the cheapest London to Ireland flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ireland from London found in the last 72 hours was to Dublin, at €45 return. The most popular route is from London Heathrow Airport (LHR) to Dublin (DUB), and the cheapest round-trip airline ticket found on this route in the last 72 hours was €45.

What is the cheapest month to fly from London to Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London 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 London to Ireland is January, when tickets cost €58 (return) on average. On the other hand, the most expensive months are December and August, when the average cost of return tickets is €119 and €94 respectively.

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

The average price of all round-trip flights from London to Ireland clicked on KAYAK for each day over the last 12 months.

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

How far in advance should I book a flight from London to Ireland?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London 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 a flight from London to Ireland, you should book around 5 weeks before departure, which saves you about 41% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight€27
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly (3% more expensive on average)
Flight from London Stansted Airport to Cork

Flights from London to Ireland: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from London 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 - booking Ireland flights

  • What direct flights are there from London to Ireland?

    There are several direct flights to Ireland from London, as this entire journey should take no more than 1h 30min to complete. Aer Lingus, Ryanair and British Airways all offer swift, direct flights, and Lufthansa and Swiss Air also service this flight but will include one stop.

  • How can I get assistance as a disabled passenger?

    All airlines will offer service for disabled travellers. You can get wheelchair use, embarkment and disembarkment assistance and bathroom assists if you have reduced mobility. If you are visually impaired, you can find braille safety cards and assistance for embarking and disembarking the plane. Other disability needs such as autism, anxiety and hearing impairment can also be assisted. It is often best to consult your airline before you fly to ensure proper service.

  • How can I work online on the plane?

    All airlines servicing this route have now rolled out Wifi for international flights. You will be able to get connected from the sky and work online as soon as the cabin crew gives you the go-ahead.

  • If I arrive at Dublin Airport, will I be able to get medical treatment?

    Dublin Airport has a full medical staff on hand for any emergency that may occur during your flight or at the airport. If you are ill on the plane, let the cabin crew call the airport to arrange assistance as you land. Should you need additional service to what the airport's medical centre can provide, the airport will arrange an ambulance.

  • How does KAYAK find such low prices on flights from London 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 London to Ireland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London 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 London 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 London 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 London 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 London 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 time of day to fly to Ireland?

    The cheapest time of day to fly to Ireland is generally in the evening, when retur flights cost €168 on average. Morning departures are around 14% more expensive 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 cheap flights to Ireland

  • When flying from London to Ireland, you will be lucky enough to be able to use any of the London-serving airports for the trip. Heathrow (LHR) and London City Airport (LCY) are the two airports that are closer to London central and are good choices if you are based centrally. Gatwick (LGW), Luton (LTN) and Stansted (STN) are all slightly further afield, so take into account your ground-travel time when planning your itinerary.
  • If you would like to take some great British treats to your Irish friends, all London-serving airports offer great duty-free shopping options. Heathrow and Gatwick have convenient click-and-collect services, which can reduce time. Simply browse online and collect at the designated point of the airport for a seamless transaction.
  • Although your flight to Ireland from London will be rather short, if you have a baby, you may want to ensure they sleep comfortably through it. If you fly with British Airways, you can get a bassinet for your little one, to get them down before the plane takes off. All London airports will also let you board first if your baby is under two years of age.
  • If you are planning on visiting Dublin, ensure your flight arrives at Dublin Airport (DUB), on the western coast of the country. You can also catch flights to the central region of Limerick and land at Shannon Airport (SNN) or the southern region of Cork and land at Cork Airport (ORK). Although Ireland is essentially small, direct city-to-city flights are always good if you don’t have the time for ground transportation.
  • If you are planning on taking your service animal on the plane, be aware that, although this is welcomed, you will have to follow the procedure of alerting the airline at least 48 hours before the flight, making sure the animal’s paperwork is up to date and they have all their latest inoculations.

Reviews of the top airlines flying from London to Ireland

 
Need help choosing which airline to fly with from London 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.
7.2
Aer LingusOverall score based on 1238 reviews
6.9Entertainment
8.0Crew
7.3Boarding
6.5Food
7.1Comfort
Airline reviews

Best travel day I've had in a long time. Everything went perfectly, no delays. 10 out of 10

10.0 ExcellentKimberly, Aug 2025EDI - DUB
Read more Aer Lingus reviews

Best travel day I've had in a long time. Everything went perfectly, no delays. 10 out of 10

Seat is business could have been a lot cleaner, but space was nice and seat was comfortable

Terrible. The test of an airline is how they deal with problems. There is very little to differentiate between airlines. Aer Lingus failed absolutely. They lost one of my bags even though we had more than a 2 hour connection in Dublin. Trying to get it back has been awful. In checking on line I can see that the bag is in Edinburgh and it was supposed to be delivered today. It wasn't. The number we have in the UK doesn't answer. I had to pay for an international call to speak to somebody. All the woman at the call centre could say was be patient wait. I can tell you when it will be delivered nor can I tell you who the courier is.

A little late, but an overall pleasant flight. Staff pleasent hand helpful, a great start to our holiday.

Poor check-in experience in Manchester. Delayed boarding and check-in agent never explained how to transfer in NYC to JetBlue.

Overall it was good experience and it was my first trip with Aer Lingus. One thing I was embarrassed was that someone occupied my seat so I was asked to use another seat. Due to this unhappy happening I almost missed the connecting flight because the random seat was far from the flight door. Food was fine, I liked the macaroni and cheese with fresh bread.

I was very disappointed that the online sys allowed me to get the boarding pass for the second leg of the trip, when I clearly request it for both flights!

It was my first transatlantic flight with Aer Lingus. Very enjoyable. Thank you for making international travel enjoyable again.

Excellent as far as the flight is concerned. Faro airport passport check was a huge delay and worrisome re missing the flight. 45 minutes there through passport control

The space between seats has reduced even further making it extremely uncomfortable. Couldn't even open the tray table properly or got compressed the moment the front guy reclined.

We missed the connection because we had to wait for a shuttle from the plane to the Terminal. Also, we needed assistance and none was available.

When we arrived at the airport - 1st step - printing out your boarding pass - no issue. Not long lines as these machines. 2nd step - processing your bag drop off. There was only one associate there to help 10 kiosks. We had a family in front of us for 20 minutes trying to work on the machine and figure out every step for 4 pieces of luggage. My husband alerted the associate who was able to assist the family. Highly suggest that there are more associates to assist in this process. Besides this issue, security check went very quickly. Our flight was direct to Philadelphia. We had to carry our bags down two flights of steps, then out to the tarmac to a bus, then carry our bags up two flights of stairs to the plane. No one on the flight was expecting that long trek. I could see some people were struggling a bit. All in all - great flight crew, plane was clean and food was great!

The space is tight. Either you sit straight up the whole time, but the minute you relax, your knees hit the back of the seat in front of you. My seat would not recline so I was quite uncomfortable. Didn’t use my tray table bc it was stained and sticky and nasty. I was also seating in one of the last rows and one crew member and people going to the bathroom kept hitting my elbow resting on the armrest.

Flight was delayed for 2h. Announcements were poor and I was given 1 biscuit and a bottle of water as consolation. Not happy.

There were no gluten-free vegan options available, so food was very limited on this flight, and some of the crew weren’t especially helpful about it. To make matters worse, a passenger was sick on board, and although the area was cleaned, the smell lingered for the rest of the journey. On top of that, we ended up circling for an extra hour, which only made the unpleasant situation drag on even longer.

The crew’s professionalism was top notch and the food and drinks available were excellent. I only ask that we get the refurbished 777’s on the London to Bermuda route that I had for the London to Singapore leg. The updated infotainment system is much better than the older version

Checking in prior on line and wait time at Gatwick was terrible. I would rate a big fat ZERO.

I checked in to bags, one arrived one was delayed. I did not receive the bag for 4 days - arrived on Tuesday, received bag on Saturday!

It was ok. Our flight was delayed 2 hours, and then again on arrival. The explanation given felt feeble.

The booking agent, cheapflightsfares, messed up, and the information for the seats we paid extra for was not sent to American Airlines. We were separated on the return flight and sent to the lowest economy section. The flight attendant helped arrange seating at the back of the plane to allow my wife and me to sit together.

Everything you need to know for your flight from London 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.

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