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Find cheap flights from London Heathrow Airport to Ireland from £42

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 18/5. 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
Sat 8/6
Sat 15/6

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Best Ireland Flight Deals

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

Dublin
Dublindirect£60
Cork
Corkdirect£88
Shannon
Shannondirect£110
Knock
Knockdirect£90
Donegal
Donegal1 stop£171

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

Low season

January

High season

August

Cheapest flight

£42
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 110% 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 1592 reviews
7.8Boarding
7.3Food
7.6Comfort
7.2Entertainment
8.4Crew
Airline reviews

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

10.0 ExcellentCesar, Feb 2024DUS - AMS
Read more about KLM reviews

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

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

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 .

The food quality is poor. The staff are very friendly and accommodating. The entertainment program was limited. I experienced a delay of 30 minutes due to two issues. Passenger luggage had to be removed and there was a technical issue with the stairs not detaching from the aircraft. The pilot managed to compensate and we arrived only 15 minutes later. The luggage at Dubai airport was very slow. I waited over an hour.

I requested wheel chair assistance , it was confirmed via email that inwoood get it but I didn’t get it . The last leg of my trip to Nigeria was the worst.

The boarding was one of the worst I’ve ever experienced. The fault lays on Ohare Airport and not so much the airline. The waiting area by the gate was the size to accommodate a regional flight for 20-30 people and right next to a busy walkway. When you cramped nearly 300 passengers into that space is was unbearable.

one of my bags was drenched with fish smelling water and all my new clothes bought at dublin and the 23kg checked in bag were all gone waste with very pungent fish smell and also having stains

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)

I was pleasantly surprised with the whole experience. Thank you

Not exceptional but all good. Business class seats are like the domestic Mint class on Jet Blue. Comfortable but not exceptional. Food is good but not superb. Flight attendants were better on India leg than Miami to Zurich. All India staff was more professional and service oriented. Very polite and service with a smile.

Thank you to the cordial crew and good hydration throughout the flight, food was good too. Carry ons usually weight by themselves so it does reduce option for cold weather clothes that are heavy, so carryon weight is tight.

We so appreciated that our connecting flight waited for 6 of us!!!

The two meals were plentiful and excellent. The drinks were continuous. Thanks, Crew very polite; however a bit "hazard" at the end as they were rushing us off; to prepare for the cleaning team and next flight. Baggage from Berlin was delayed; however through the apps etc; they kept me aware and informed.(.did receive my baggage about 36 hours after my flight arrival). Good experience; thank you.

Crew took my carry on and checked it in; turned out to be a blessing; however the luggage was delayed at my final destination; receiving it 36 hours later. Thought, we'd get, at least water; but the Swiss chocolate was delicious. Thanks.

The flight was canceled so it’s stupid to send me this now !!!!!

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.

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.

The flight boarded and departed Venice on time (more or less), the cabin crew were super friendly and efficient, the flight crew kept us informed of progress, and the flight arrived early in Dublin. All in all, this flight was as close to perfect as is possible to achieve. Well done, Ryanair. The fact that Ryanair aircraft arrive and depart from gates that are in the back of beyond in Dublin's Terminal 1 is a bummer - in terms of the length of the walk need on both ends of a return flight. But I suspect that this is not Ryanair's fault

We were told to check our bags at the last minute, and the communication was poor.

Lost our luggage in Heathrow. Showed up 3 days into a 7 day vacation. Very inconvenient and disappointing!!

My luggage never arrived to Zurich. They can't confirm when it will arrive

Late again. 3 out of 4 late. One cancelled flight and one lost bag.

Charged an extra 65 pounds for overweight suitcase, Not told how much overweight but had no choice but to pay the price. Compare to Delta Airlines where I flew internationally a few days before with this suitcase and no extra charge by Delta. Comfort was horrible. I am just under 6 feet tall, and good that the flight was only 1 1/2 hours, because my knees were in the seat back in front of me the whole flight. I felt that my knees were part way up to my chest. No reason to have the seats that close. I will say to the positive was the flight crew, very friendly and efficient.

The flight was delayed as they were waiting on catering. Catering. Was eventually delivered but they still had no food. No meals for us in business class - just a bag of nuts.

Our luggage is missing. We are at the Hotel Gran Via in Barcelona

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

The flight was on time and the crew very professional. Everything went as expected and I will use BA again for this trip.

We paid to have overhead carry-on baggage. When we got to the gate we were told that our carry on bags would need to be checked and go below because the flight was full. Notably we were nowhere near the last people to board and about 30 other passengers also had to check their carry-on bags. Other than that the flight was fine.

Book cheap flights from London to Ireland

Cheapest flights to Ireland from London found in 2024

Recent return flight deals

10/9Tue
directBritish Airways
1h 25mLHR-DUB
14/9Sat
directBritish Airways
1h 20mDUB-LHR
£60
15/10Tue
directBritish Airways
1h 25mLHR-DUB
17/10Thu
directBritish Airways
1h 20mDUB-LHR
£61
5/6Wed
directAer Lingus
1h 25mLHR-ORK
12/6Wed
directAer Lingus
1h 15mORK-LHR
£88
6/6Thu
directAer Lingus
1h 30mLHR-NOC
13/6Thu
directAer Lingus
1h 25mNOC-LHR
£90
13/9Fri
1 stopKLM
4h 15mLHR-ORK
22/9Sun
1 stopKLM
10h 00mORK-LHR
£151
1/6Sat
1 stopKLM
3h 50mLHR-DUB
4/6Tue
1 stopKLM
4h 50mDUB-LHR
£151
4/6Tue
1 stopScandinavian Airlines
5h 10mLHR-DUB
5/6Wed
1 stopScandinavian Airlines
9h 00mDUB-LHR
£155
27/8Tue
1 stopScandinavian Airlines
5h 10mLHR-DUB
3/9Tue
1 stopScandinavian Airlines
9h 00mDUB-LHR
£156
27/6Thu
1 stopSWISS
16h 05mLHR-DUB
1/7Mon
2 stopsSWISS
20h 30mDUB-LHR
£168
12/6Wed
1 stopSWISS
6h 10mLHR-DUB
19/6Wed
1 stopSWISS
11h 55mDUB-LHR
£170

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Recent one-way flight deals

18/5Sat
directBritish Airways
1h 25mLHR-DUB
£42
14/9Sat
directBritish Airways
1h 25mLHR-DUB
£42
7/6Fri
directAer Lingus
1h 20mLHR-DUB
£57
29/6Sat
directAer Lingus
1h 20mLHR-DUB
£58
9/6Sun
1 stopKLM
5h 15mLHR-DUB
£90
7/6Fri
1 stopKLM
6h 05mLHR-DUB
£95
3/6Mon
1 stopScandinavian Airlines
5h 10mLHR-DUB
£98
4/6Tue
1 stopScandinavian Airlines
5h 10mLHR-DUB
£98
18/6Tue
1 stopSWISS
17h 30mLHR-DUB
£131
26/6Wed
2 stopsSWISS
11h 00mLHR-DUB
£140

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Last minute flights from Heathrow to Ireland

Last minute flight, train and bus deals

13/5Mon
directBritish Airways
1h 25mLHR-DUB
22/5Wed
directBritish Airways
1h 20mDUB-LHR
£88
13/5Mon
directBritish Airways
1h 25mLHR-DUB
22/5Wed
directBritish Airways
1h 25mDUB-LHR
£90
14/5Tue
directAer Lingus
1h 20mLHR-DUB
15/5Wed
directAer Lingus
1h 20mDUB-LHR
£122
13/5Mon
directAer Lingus
1h 25mLHR-SNN
17/5Fri
directAer Lingus
1h 15mSNN-LHR
£124
14/5Tue
multi-stopKLM
5h 15mLHR-DUB
25/5Sat
multi-stopKLM
7h 20mDUB-LHR
£192
14/5Tue
multi-stopKLM
7h 40mLHR-DUB
21/5Tue
multi-stopKLM
7h 20mDUB-LHR
£199
13/5Mon
multi-stopScandinavian Airlines
5h 10mLHR-DUB
15/5Wed
multi-stopScandinavian Airlines
9h 00mDUB-LHR
£258
11/5Sat
multi-stopScandinavian Airlines
7h 25mLHR-DUB
18/5Sat
multi-stopScandinavian Airlines
5h 45mDUB-LHR
£276
13/5Mon
multi-stopSWISS
16h 05mLHR-DUB
22/5Wed
multi-stopSWISS
15h 05mDUB-LHR
£339
14/5Tue
multi-stopSWISS
6h 10mLHR-DUB
21/5Tue
multi-stopSWISS
8h 30mDUB-LHR
£352

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London Heathrow Airport - Ireland Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

Ireland - London Heathrow Airport

Cabin classes:

£181
£315
£310
£82