Find flights
Deals
When to book
FAQs & Tips
Airlines

Find cheap flights from London Heathrow Airport to Ireland from £37

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Ireland departing on 10/9. 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
0 bags
jue. 27/6
jue. 4/7

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

In the last 7 days, travellers have searched 42,816,550 times on KAYAK, and here's why:

Save 28% or moreCompare multiple travel sites with one search.

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

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

Bundle and saveSave money when you bundle your flight + hotel.

Best Ireland Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours

Dublin
Dublindirect£53
Cork
Corkdirect£87
Shannon
Shannondirect£109
Knock
Knockdirect£92
Milltown (Kerry)
Milltown (Kerry)1 stop£190
Donegal
Donegal1 stop£187

Good to know - Cheap tickets from London Heathrow Airport to Ireland

Low season

January

High season

August

Cheapest flight

£37
Best time to beat the crowds (31% less expensive on average)
Most popular time to fly and prices are also 0% lower on average.
Flight from London Heathrow Airport to Dublin

FAQs - booking Ireland flights

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ireland from London Heathrow Airport 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 Heathrow Airport 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 to Ireland with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport 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 to Ireland from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from London Heathrow Airport to Ireland

  • Morning departure is around 43% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Heathrow to Ireland

 
Need help choosing which airline to fly with from Heathrow 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.
7.8
KLMOverall score based on 1528 reviews
8.4Crew
7.7Comfort
7.9Boarding
7.4Food
7.2Entertainment
Airline reviews

The flight was again delayed for more then 2 hours with some lousy explanation regarding the reason of the delay. Although the flight was delayed for more than 2 hours, no refreshments were offered (according to EU regulations). Last 4 flights on KLM - always at least 2 hrs late. So be prepared that you cannot plan anything with KLM.

2.0 MediocreDavor, Apr 2024ZAG - AMS
Read more about KLM reviews

The flight was again delayed for more then 2 hours with some lousy explanation regarding the reason of the delay. Although the flight was delayed for more than 2 hours, no refreshments were offered (according to EU regulations). Last 4 flights on KLM - always at least 2 hrs late. So be prepared that you cannot plan anything with KLM.

The flight was delayed for 2 hrs. Because they didn’t have a crew to fly. And it is not a first time for klm to do that. Last time they cancelled my filght and rebooked me 3 days later. Not reliable airline

Seats are fair enough for medium tall people. Good food all the trip. Fight attendances are warm

I thought KLM was the best airline but the Lima - Amsterdam was 1 hours late, the Brussels - Amsterdam was 2.30 hours late and the Amsterdam - Lima was 30 minutes late

no issues at all... Kudos to the food. This time was really really good

The food was ok. The crew seemed like they were cranky. I had one guy get mad at me for passing in between the storage area to get to the other toilet. I can understand if it's not allowed but reprimanding me like I'm a student saying "This is the last time!" was not appropriate. During my meal time, there was a French family around me. No problems there but when we usually have meals, they are supposed to put their chair in the upright position. These people did not do it and the steward did not tell them to raise their seat in the upright position. However, I was told to do so! So, me and another person next to me had to eat with the monitor almost touching our faces. Furthermore, a lady in front of me was putting her feet up and preventing another elder passenger from putting her seat back. To make it worse, she was continuously hitting her back into her seat, shaking my monitor while I was watching a movie. A crew member did speak to her about it but then she accused me of pushing her seat forward! The crew member gave me a death stare and told me to stop pushing the seat forward. I did not even touch her seat at all, if I did, she would know it. Her boyfriend also stood up and tried to push her seat even further past the maximum decline to no avail. None of these people were reprimanded but the steward, some bald guy, was extremely friendly with them and did not even try to instruct them to do anything until it was time to land. I resisted the urge to really argue with them because I would have obviously been seen as the aggressor (I have no idea why). I hardly said anything on this flight except "more wine please" and "sorry" if I bumped into someone accidentally. Overall, it was an annoying flight and I had to resist the urge to yell at the steward and the people he was overly friendly with. The happiest moment of this flight was leaving it.

One of the vstewardeses wanted to bump me of the plane for absolutely nothing. There is CCTV in the plane ans everything can be verified. Very disappointing , you all will see, o other 5 years and the passangers who does not smile to flight attendent will be bumped off...

The worst airline. Cancelled flight 30 min before boarding and rebooked on flight after 3 days.

I travel frequently. The flight was late again... KLM should really try and be on time

The flight itself it was great nice food the crew were very nice and helpful, Checking in from Birmingham wasn't great long queues for bag dropped, And I had my hand luggage case taken away from me even though I requested to have it with me as I had breakables items. I was told I can not because of the length of the flight with no explanation at all no options was given for me to take my fragile items out of my case it was taken away with hold buggage I find the staff member who was checking me in very unpleasant !! Can we please be advise if the rules have changed about the the carry on hand luggage it will be easier to be advise on booking your tickect if we not allowed to take the hand luggage with me. Overall I had a good flight .

Crew was super courteous and helpful. Food quality was not so good. Most of the movies were old.

Carry on luggage size for economy passengers significantly smaller than other airlines, so nearly all ecomy passengers had their bags taken and checked.

Didn’t get my luggage from layover in Zurich until 3 days later even though my luggage was marked priority and short layover, but my husband got his when we landed

seats are too tight and uncomfortable everything else went well.

Flight was late and crew were unwilling to help with information on connections. Call light had been on for 61 minutes without tesponse.

Horrible experience. They "GAME" with seats they decided to play where you can`t select or get seat during check-in without paying and then forcing you to stay long line at the Customer Service at the gate to get a boarding ticket with seat assigned is pathetic. Will never fly with United again!

SO disappointing. I spent so much money on this ticket, for them to cancel and not be able to rebook me in time. They were very unhelpful, and condescending throughout the whole Swiss airport. Will not be flying again.

The Zurich airport is a disaster with to small trains running between the terminals, the trains was overfilled (not good in Corona times). It was no directions in the airport with proper lines so you did not know if you ere standing in the right line. They checked your passport 3 times in the airport = a lot of standing in line. Service on the plane could be a lot better, The cabin crew could have offer more to drink (water, coffee, tea), the food sucked.

Swiss ground crew was again at its prime and although I’m United 1K (Star Alliance Gold) they created problems with my hand luggage - while other passengers were boarding with more handbags and larger hand luggages, were critical on my 2 young kids attending the lounge with me and boarding the plane with me on the priority lane.

Everything was on time and efficient - expected from a Swiss crew. But the entertainment system was pretty bad - the display was old. Food was pretty bad and a couple of times they started serving drinks and then just skipped past my row (and likely several others)

Are Longus was fine. I booked thru Kayak and was unable to get my business class seat early. Sat next to galley. Crew forgot to wake me for breakfast.

I was pleasantly surprised - it has been awhile since I traveled with them - other than being delayed leaving Malaga everything ran very smoothly- yes I would travel with aer Lingus again and yes I would recommended

I loved how they arrange boarding (starting with people seated in back and moving to the front). Flight crew was very polite and welcoming. Seating was ok, I felt like there was enough leg space however it is noticeable when the passenger in front of you sets their seat back.

Flight staff very friendly and helpful where possible. Late flight and travelling with young child, cabin lights remained on for the duration of the flight which was a little disappointing considering the time of the flight. Overall very happy to travel with Aer Lingus.

Nice to be on a flight that wasn't fully booked so there were only two of us in the three seat row.

The only problem was there are games on the entertaiment system. The guy behind me played poker the entire time and poking the back of my seat. I hope they remove these.

Delayed due to weather... fine. But then the board us. Rows 15 and back had to go down the stairs and back up the back stair entrance to the plane. No assistance offered. Then they inform us that we are delayed for paperwork for an hour. So why did we board? Then, about 45min later they inform us that it'll be another 60-90mins. Really? No wifi, no seat entertainment, no drink or snacks offered. And we were not allowed to deboard.

Great travel. Wonderful experience. Hope to do it again in the near future. God willing

Aer Lingus doesn't have plug ins for devices at each seat. They also did not give me a dairy free meal as requested and confirmed by staff. It was as if I had not requested anything. Otherwise, they were great!

There were a lot of empty rows. As a single passenger I should not have been seated with 2 others. The WiFi didn’t work. The Kosher meal was awful.

Very good, everything went straight forward, boarding, during the flight, landing and all on time Well done

flight delayed, no information given until late on, Ryanair app said "on time" until 5 minutes before expected departure time, crew rushed us to board, when it was already 3 hours late

I got denied boarding bevause they said they "ran out of seats on a plane"

Speakers were blaring. It's like being in a Moroccan market and you keep getting shouted at with what's for sale

We missed the flight due to very slow security control and lack of last call announcement. We only found out at the gate that the gate is closed. Altogether 14 or 15 people missed the flight FR4500 from Cologne to Dublin.

Everything went according to plan. Check in, boarding etc all were very efficient.

What can you say Ryanair get you there,no frills Not so cheap anymore ..... but what is now days! Would use again as always. Good flight times for us.

Very unpleasant staff, disgusting service, ignoring requests, refusal to help

Late again rude staff at gate bullying passengers made us stand in the cold 3degrees for 40 mins before they let us board

The usual average Ryanair flight, but we landed 20 min before due time, which was very good.

Really quick check in and security at Heathrow Terminal 5. Staff on board were lovely and very friendly. Could have provided a few more drinks on the flight but they were available at the back of the plane.

Flight boarded and took off late for unknown reasons. Crew insisted we check our hand luggage due to full flight, which it was not even close to full. Then had to wait almost an hour a and a half for the hand luggage to come onto the luggage belt since it was loaded last. This came after many hours of traveling pregnant with my 6 year old daughter. Really didn’t appreciate the unnecessary delays. What the hell?

Left late. Crowded like cattle. Standing and waiting. Food on board getting worse.

Terrible- the flight time was delayed and then I was denied boarding because I arrived at the new time of departure

Flight delayed an hour due to plane maintenance issues after getting in line to board. Issue was plane galley ovens which eliminated hot meals for overseas flight. Cold selections were limited due to availability. Drink and meal service (already an hour delayed) was very slow. Upon arrival in Nashville, had to sit at gate for about 15 minutes before disembarking with no explanation. Local police then boarded plane as we were disembarking so maybe that was the issue.

Boarding good. Seats uncomfortable when lie flat. Food was awful. Tasted stale and chicken was dry. No live tv or flight map. Had to pay for internet.

Poor technical details on this plane. 1) There was no WiFi on an 8 hour long-haul flight. So no work could be done. That's below the standard expected for airlines these days. 2) The power outlet at my seat was busted and not working. 3) The headphone jack was loose and I had to keep adjusting my headphones to get good reception, or when it slipped out. - The flight was delayed to due mechanics. Sometimes this can't be avoided, I understand, and it's a big inconvenience to arrive that much later when traveling across time zones (then arriving at 4am from the prior time zone). - Also unique to this flight, the northern lights were visible on the right side of the aircraft, but I only found out after we landed (b/c again no wifi). I understand there are considerations about people being out of their seats to look, but I feel extremely disappointed and resentful that I wasn't told so that I could have a chance to look at this probably once-in-a-lifetime cosmic event from a view in the sky. - Flight crew was otherwise friendly and helpful.

Our flight was delayed by over 6 hours. We then had to deplane, stay overnight in a hotel then fly out the next day, 23 hours late.

I would have preferred something lighter for the second meal. Maybe a small sandwich .

They cancelled our flight the morning of departure at 4:30am.

Book cheap flights from London to Ireland

Cheapest flights to Ireland from London found in 2024

Recent return flight deals

19/11mar.
directBritish Airways
1h 30mLHR-DUB
21/11jue.
directBritish Airways
1h 15mDUB-LHR
£53
9/10mié.
directBritish Airways
1h 25mLHR-DUB
16/10mié.
directBritish Airways
1h 30mDUB-LHR
£54
5/11mar.
directBritish Airways
1h 30mLHR-DUB
7/11jue.
directBritish Airways
1h 15mDUB-LHR
£55
9/7mar.
directAer Lingus
1h 20mLHR-ORK
30/7mar.
directAer Lingus
1h 15mORK-LHR
£87
11/6mar.
directAer Lingus
1h 20mLHR-ORK
18/6mar.
directAer Lingus
1h 15mORK-LHR
£92
28/10lun.
1 stopKLM
4h 10mLHR-DUB
31/10jue.
1 stopKLM
5h 50mDUB-LHR
£146
10/7mié.
1 stopKLM
4h 55mLHR-DUB
24/7mié.
1 stopKLM
4h 15mDUB-LHR
£149
26/6mié.
1 stopSWISS
9h 20mLHR-DUB
1/7lun.
1 stopSWISS
12h 25mDUB-LHR
£161
12/8lun.
1 stopScandinavian Airlines
15h 20mLHR-DUB
19/8lun.
1 stopScandinavian Airlines
12h 45mDUB-LHR
£163
26/10sáb.
2 stopsSWISS
11h 00mLHR-DUB
28/10lun.
1 stopSWISS
6h 00mDUB-LHR
£169

Search by stops

Search by airline

Search by price

Recent one-way flight deals

10/9mar.
directBritish Airways
1h 25mLHR-DUB
£37
25/9mié.
directBritish Airways
1h 25mLHR-DUB
£38
19/6mié.
directAer Lingus
1h 30mLHR-NOC
£47
4/6mar.
directAer Lingus
1h 20mLHR-ORK
£48
13/9vie.
1 stopKLM
3h 55mLHR-DUB
£90
18/9mié.
1 stopKLM
5h 15mLHR-DUB
£91
17/6lun.
1 stopScandinavian Airlines
5h 10mLHR-DUB
£92
15/9dom.
1 stopScandinavian Airlines
6h 10mLHR-DUB
£97
28/6vie.
1 stopSWISS
12h 00mLHR-DUB
£123
17/9mar.
2 stopsSWISS
11h 00mLHR-DUB
£127

Search by stops

Search by airline

Search by price

Last minute flights from Heathrow to Ireland

Last minute flight, train and bus deals

1/6sáb.
directBritish Airways
1h 25mLHR-DUB
4/6mar.
directBritish Airways
1h 30mDUB-LHR
£89
1/6sáb.
directBritish Airways
1h 25mLHR-DUB
4/6mar.
directBritish Airways
1h 30mDUB-LHR
£90
29/5mié.
directBritish Airways
1h 25mLHR-DUB
8/6sáb.
directBritish Airways
1h 20mDUB-LHR
£92
31/5vie.
direct
1h 20mLHR-DUB
5/6mié.
direct
1h 20mDUB-LHR
£121
31/5vie.
directAer Lingus
1h 20mLHR-DUB
4/6mar.
directAer Lingus
1h 20mDUB-LHR
£122
31/5vie.
directAer Lingus
1h 20mLHR-DUB
5/6mié.
directAer Lingus
1h 20mDUB-LHR
£125
30/5jue.
direct
1h 20mLHR-DUB
13/6jue.
direct
1h 30mDUB-LHR
£126
31/5vie.
multi-stopKLM
5h 15mLHR-DUB
5/6mié.
multi-stopKLM
7h 20mDUB-LHR
£217
1/6sáb.
multi-stopScandinavian Airlines
12h 35mLHR-DUB
5/6mié.
multi-stopScandinavian Airlines
6h 10mDUB-LHR
£237
31/5vie.
multi-stopKLM
5h 15mLHR-DUB
6/6jue.
multi-stopKLM
4h 50mDUB-LHR
£245

Search by stops

Search by airline

Search by price

London Heathrow Airport - Ireland Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

Ireland - London Heathrow Airport

Cabin classes:

£177
£346
£303
£76