£15 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 15/4. 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, 0 bags

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Cheap Flights from London to Ireland

Cheapest return prices found by our users on KAYAK in the last 72 hours
Dublin
Dublindirect£35
Cork
Corkdirect£33
Shannon
Shannondirect£36
Knock
Knockdirect£33
Donegal
Donegal1 stop£136
Dublin
Dublindirect£35
Cork
Corkdirect£33
Shannon
Shannondirect£36
Knock
Knockdirect£33
Donegal
Donegal1 stop£136

Book Cheap London to Ireland Plane Tickets

 
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

Fri, 6 Mar - Mon, 9 Mar
Ryanair Logo
21:35 - 23:00
LGW
-
DUB
1h 25mdirect
Ryanair Logo
19:30 - 20:55
DUB
-
LGW
1h 25mdirect
£35Ryanair
Tue, 3 Mar - Sat, 7 Mar
Ryanair Logo
09:00 - 10:15
LTN
-
DUB
1h 15mdirect
Ryanair Logo
15:00 - 16:15
DUB
-
LTN
1h 15mdirect
£35Ryanair
Sat, 21 Mar - Sun, 22 Mar
Multiple Airlines Logo
13:30 - 14:50
STN
-
DUB
1h 20mdirect
Multiple Airlines Logo
06:30 - 07:50
DUB
-
STN
1h 20mdirect
£38Multiple Airlines
Fri, 20 Mar - Sat, 21 Mar
Multiple Airlines Logo
21:45 - 23:05
STN
-
DUB
1h 20mdirect
Multiple Airlines Logo
21:45 - 23:05
DUB
-
STN
1h 20mdirect
£40Multiple Airlines
Fri, 6 Mar - Sat, 7 Mar
British Airways Logo
18:25 - 19:50
LHR
-
DUB
1h 25mdirect
British Airways Logo
17:55 - 19:15
DUB
-
LHR
1h 20mdirect
£61British Airways
Mon, 18 May - Mon, 1 Jun
British Airways Logo
14:50 - 16:20
LHR
-
DUB
1h 30mdirect
British Airways Logo
20:30 - 21:45
DUB
-
LHR
1h 15mdirect
£72British Airways
Wed, 6 May - Thu, 14 May
Aer Lingus Logo
19:10 - 20:35
LHR
-
SNN
1h 25mdirect
Aer Lingus Logo
07:30 - 09:05
SNN
-
LHR
1h 35mdirect
£91Aer Lingus
Sat, 14 Mar - Mon, 16 Mar
Aer Lingus Logo
22:05 - 23:25
LHR
-
ORK
1h 20mdirect
Aer Lingus Logo
17:35 - 18:50
ORK
-
LHR
1h 15mdirect
£92Aer Lingus
Sat, 7 Mar - Tue, 10 Mar
KLM Logo
08:40 - 16:45
LCY
-
ORK
8h 05m
1 stop
KLM Logo
11:15 - 19:35
ORK
-
LCY
8h 20m
1 stop
£162KLM
Tue, 31 Mar - Sun, 5 Apr
KLM Logo
08:25 - 22:35
LCY
-
ORK
14h 10m
1 stop
KLM Logo
06:15 - 13:15
ORK
-
LCY
7h 00m
1 stop
£170KLM
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 Milltown (Kerry), at £28 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 £83.

Can I save money by flying with a stopover from London to Ireland?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £84, prices are generally cheapest when you fly direct.

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 £44 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of return tickets is £91 and £78 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 your flying dates are flexible, you should consider flying to Ireland on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from London to Ireland. For your return ticket, we recommend flying on a Friday and avoiding Saturdays for the best deals.

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 43% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know - Cheap tickets from London to Ireland

Low seasonJanuary
Cheapest flight£15
Best time to beat the crowds (39% less expensive on average)
Most popular time to fly (26% more expensive on average)
Flight from London Gatwick Airport to Shannon

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 Lingus
LHR
-
DUB
Jun 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 Lingus
LHR
-
DUB
Jun 2025
If you’re doing a transfer speak to someone at the desk don’t use an automated kiosk
KillianFlew with British Airways
LCY
-
DUB
May 2025
Dublin airport a shambles when it comes to collecting luggage or getting a cab. Allow plenty of extra time.
ThomasFlew with Aer Lingus
LHR
-
DUB
Oct 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 £140 on average. Morning departures are around 240% more expensive than evening flights, on average. The most expensive time of day to fly to Ireland is generally in the morning, which is peak travel time and where the average cost of a ticket is £475.

Top tips for finding a cheap flight from London 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 4 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 1455 reviews
7.1Comfort
7.4Boarding
8.1Crew
7.0Entertainment
6.6Food
Airline reviews

Punctual, smooth flight. Crew excellent and cabin very clean. Paid for WiFi but once you close out you cannot get back in even if you paid for entire flight.

8.0 ExcellentGerhard, Feb 2026
LAX - DUB
Read more Aer Lingus reviews

Punctual, smooth flight. Crew excellent and cabin very clean. Paid for WiFi but once you close out you cannot get back in even if you paid for entire flight.

Flight crew was superb. Meal was one of the meals at altitude I’ve had

One of the best flight experience I have had in along time. Would fly with them again.

Like getting a bus. No great luxury but will get you there

Got us to destination alive, albeit a bit late. Luggage was left behind. No live tracking app available (available on some other airlines). Supposedly going to be delivered in next couple of days.

The trip was mostly nice, till the last moment when they had some issue with opening the flight door. The flight arrived late by 10 minutes, which was ok-ish, but then we got stuck on the plane for 35 minutes at the bridge and that costed our connection flight to LAX which left with 12+ passengers still on our flight. It added 2 days to our trip home, and we had to make lots of rearrangements to deal with the ripple effects. Don't book a 1+ stop trip with a layover time less than 2 hours.

My seat was broken. No sound available and the armrest between my wife and I was broken so it could only fold halfway up. Seats were a big close together so they felt a bit claustrophobic. Boarding was a little frustrating in Dublin as there is not sufficient room to actually queue up. Boarding was also frustrating for people behind me who were unable to use the overhead due to people abusing the privilege and putting more than one item each up there. Staff was friendly and helpful to those people.

The staff was amazing, so friendly and responsive. Check in was tedious as the online service was not available and the desk understaffed. It took a full hour in line to check in. The seats, in economy, where quite spacious until the people in front of us reclined their seats which then meant the seat was touching our knees. The inconsiderate people who were seated in a bulkhead kept their seats reclined for 80% of the flight and then got annoyed when we bumped their seats while shifting positions. It was highly unpleasant..

The connection time between the regional flight (from Newcastle) to an international flight (to The States) was too short. To require as second security scan and customs clearance within an hour and 20 mins is not enough time to make the actual connection. We had a final boarding call the minute we walked out of US customs and had to sprint (with two small children) through 20 gates to make it in time before the door closed. The concept is great in theory to clear customs before leaving Europe, but the timing needs to be adjusted. We travel abroad frequently and won’t be using this route again. Thanks.

Canceled my flight couple hours before takeoff. They could not find a decent re-routing and refused to pay for when i subjected alternative with Lufthansa.

I liked almost everything (e.g. ease of booking, price, punctuality, efficiency, friendliness, courtesy). A slam landing in Dublin airport took some of the gloss off it, though. Being able to paste here the text of the review of the same flight that I just wrote for Ryanair would make me feel better about Kayak too.

Great flight just took some time to board even when lining up early for the flight, even taking off took longer then expected.

Take off was great but landing is always with a bump.

Staff were very professional. Much better than the outgoing flight from Dublin. Seat cushions were practically non existent. Making for a very uncomfortable flight.

Flight was delayed by 1 hour 45 minutes. Aircraft was cramped, dirty and uncomfortable. Boarding staff more interested in charging you for oversize baggage than getting you on board. Overall not a pleasant experience.

They were extremely unprofessional and unhelpful at check in. They did not understand laws related to Spanish residents flying with family It was very discriminatory the way we were treated.

A delay of almost 3 hours. It was evident that the staff wanted us to board urgently, to the point of rudeness, to avoid paying compensation

It's not the staff's fault. The cabin crew do their best but the setup in Stansted Airport by Ryanair is poor. The herding of people like cattle is unacceptable before boarding and is something that's in every airport but only in Stansted have I seen the queueing of passengers outside the plane on the tarmac and the crew only turning up with maybe 5 minutes to depart. This is a resource issue . Yes prices are good but seemingly comes with a price of poor treatment of customers. I'll pay more next time

On time arrival but the aircraft had seen better days and needed a deep clean.

It was appalling, full of young people who were drunk and disobeying instructions to sit down. Crew did nothing to enforce. There was a Ryanair pilot sitting in the aisle opposite me who talked through out the safety briefing so loudly I couldn’t hear. Whole thing felt unsafe

Late takeoff, but on time landing. Lost bags, 3 days to find them, still in transit to my location. Power outlets broken, Wi-Fi not working, so much for working on the long flight.

Good. For a long flight. The comfort of the seat could be better. Also, the food was « normal » plane food. Not indian plane food unfortunately! Everything else was smooth and great.

The seats were comfortable. So many empty seats allowed for stretching out and sleeping. The onboard entertainment was pretty good. The cabin crew were so kind and kept the passengers well- hydrated, and well fed.

We had American Airlines on our return and it was confusing if we were going with Aa or BA I had 2 different flight numbers and didn’t get our gate until it was boarding. So we were a bit nervous as the which it was

No WiFi. No food. 250 ml of water only drink option. No entertainment options. Extremely bare bones flight

Economy seats were good and spacious. Much better than virgin by a mile.

It’s the old style plane with the old Ying Yang seats doesn’t compare to other airlines with newer planes.

I was unable to board this flight because of visa changes that I was not alerted about and I’ve been unable to contact Kayak to obtain a refund / credit anything.

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Very late to leave, poor communication on expected departure time and when boarding actually started.

Everything was perfectly fine, it’s exactly what you would hope for from a budget airline. You get what it says on the tin, what more could you ask for?

Cheap flight but I didn't like the almost one hour delay because of paperwork!!!!

Gate is far at Leeds Bradford Airport. However, as the flight was less than half full, it was calm and not stressful. Great take off and landing. Friendly staff

Boarding was started early and we were lined up in. A glass tunnel on the tarmac we were left standing there for an hour with no information the flight left and arrived 30 mins late

It was great. We arrived a few minutes late but the crew were concert and kind about it. It was a nice smooth fly thanks be to Jesus. I prayed for smooth flight and Yahuwah answered my prayer.

Need more check in desks at Marrakech. Even if you are travelling with hand luggage only, you still need to 'check in' to get the old style boarding pass. Unfortunately they haven't thought to separate out the people checking in luggage to a separate desk. Flight was delayed leaving but arrived on time. Limited food options on board and very overpriced.

We bought tickets for £30 from kayak but we paid £55 for check in to rayan , they slaught us

Flight was delayed so long we missed our second flight. Entire trip had to be cancelled. Ryanair refused to help us.

Stanton airport is outdated, pure equiped, airport. Fire alarms, power outages is a common routine, wich result ir flights delay , additional money spending and huge gathering of people in airport wich is unsafe.

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.