€49 Find Cheap Flights from London Heathrow Airport 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 Heathrow to Ireland departing on 29/1. 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.
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Best Ireland Flight Deals from Heathrow

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

Dublin
Dublindirect€76
Cork
Corkdirect€94
Shannon
Shannondirect€129
Knock
Knockdirect€89
Donegal
Donegal1 stop€169
Milltown (Kerry)
Milltown (Kerry)2 stops€186

Good to know

Low season

January

High season

August

Cheapest flight

€49
Best time to beat the crowds (24% less expensive on average)
Most popular time to fly and prices are also 4% lower on average.
Flight from London Heathrow Airport to Shannon

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 from London Heathrow Airport 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 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 from London Heathrow Airport 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 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 from London Heathrow Airport to Ireland 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 cheap flights to Ireland

  • Looking for a cheap flight? 25% of our users found tickets from London Heathrow Airport to the following destinations at these prices or less: Dublin €63 one-way - €151 round-trip
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be January, November and December. The cheapest month to fly from London is January.
  • Morning departure is around 5% cheaper than an evening flight, on average*.
See more tips
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top airlines flying 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.
7.1
Aer LingusOverall score based on 1079 reviews
6.8Entertainment
6.4Food
7.9Crew
7.0Comfort
7.3Boarding
Airline reviews

My Aer Lingus flight (booking ref # 2SU4LF) was the worst travel experience I have ever dealt with. My flight from Paris to Dublin was delayed by over 2 hours which caused me to miss my connecting flight back to the US. I was not able to be rebooked on a new flight for another 3 days. When I finally made it on my rescheduled flight, it was delayed AGAIN, causing me to miss my connecting flight from New York to Boston. At this point I decided to just rent a car since the next flight I would have been able to get in wasn’t for another 5 hours. It was a complete nightmare experience and I will never fly Aer Lingus again. I have requested a refund from the booking company I placed my order with.

2.0 MediocreGino, Jan 2025CDG - DUB
Read more Aer Lingus reviews

My Aer Lingus flight (booking ref # 2SU4LF) was the worst travel experience I have ever dealt with. My flight from Paris to Dublin was delayed by over 2 hours which caused me to miss my connecting flight back to the US. I was not able to be rebooked on a new flight for another 3 days. When I finally made it on my rescheduled flight, it was delayed AGAIN, causing me to miss my connecting flight from New York to Boston. At this point I decided to just rent a car since the next flight I would have been able to get in wasn’t for another 5 hours. It was a complete nightmare experience and I will never fly Aer Lingus again. I have requested a refund from the booking company I placed my order with.

Flight was cancelled. There were no Aer Lingus reps to help. I had to rebook my flight and find a hotel. Still had nothing from the airline.

They couldn't do through check-in for us. They took 2 hours to issue just one leg of the boarding pass. They had no idea to handle the case of passengers who travels to USA via Dublin airport. we had tough time time Dublin airport as boarding pass for the US flight was not pre-issued. Hope Aer Lingus will learn to handle such cases which they couldn't learn in in the past 50 years of the service.

Friendly crew who apologised and explained reason for delay. Good on board service. Rather cramped seating. Late departure.

Very sad, couldn't stop crying. Was an hour delay in Ireland and when we got to Canada the flight was boarded and couldn't get on. Was the last flight of the day. Now in a hotel waiting on a stand by.I have to got o work, so I'll go first available while my son stays in the hotel til one's available

Both flights late. Almost missed connecting flight and flight staff not willing to help expedite us off the plane.

during a very rough flight, I was forced to sit in a last row seat, fell asleep, and was forced to return to my assigned seat after the turbulence. The stewardess then used that seat to sleep.

Probably my favorite airline and way to go to Europe. Everything went smoothly! Food was tasty, crew was pleasant. Really cannot complain!

Golf Bags never made it on the flight. Very expensive golf bag and. Clubs,shoes, clothing. Will file a claim against Aer Lingus

Horrible. Garbage airline. Due to the strike we got a replacement plane/crew. I didn't get my exit row seat I paid for. Food was horrible. Plane was hot and didn't have AC vents.

They did not provide free WiFi, It could be purchased for, I think, around $25, This seemed excessive.

Good flight, awful, vindictive, vile customer services in T5 Heathrow.

Ok we did get an upgrade and the flight was delayed 45 minutes BUT without any bias. The crew were excellent, friendly, efficient and verging on exuberant, they all were so happy to do their jobs. Food excellent and the new safety video is fun to watch.

Reliable, great value, but not outstanding in any aspect. This is similar to the experience you get in most international carriers like Etihad or Delta.

Aer Lingus was the actual airline so they handled everything professionally.

Flight got diverted because of an emergency and the crew were fantastic and probably saved that passenger’s life. While in emergency landing some measures could have been taken to prevent additional delays. In general not great experience with BA. I used to fly BA years ago all the time, very disappointed by the whole experience, seats were tight, bathrooms tight.

Business class area too small and chair and equipment not comfortable .

Lost my luggage in London Was double charged for luggage

BAD!!! due to delay I missed my connection in MEX, had to pay for hotel and new flight for next morning increasing my spent for $1,000 usd

Boarding could have been better organized. The one member of staff disappeared for a while so boarding by group relied on honesty.

Book cheap flights from London to Ireland

Recent return flight deals

1/3Sat
directBritish Airways
1h 20mLHR-DUB
3/3Mon
directBritish Airways
1h 20mDUB-LHR
€76
1/3Sat
directBritish Airways
1h 20mLHR-DUB
15/3Sat
directBritish Airways
1h 20mDUB-LHR
€80
18/2Tue
directAer Lingus
1h 30mLHR-NOC
25/2Tue
directAer Lingus
1h 30mNOC-LHR
€89
13/3Thu
directAer Lingus
1h 25mLHR-SNN
17/3Mon
directAer Lingus
1h 30mSNN-LHR
€91
19/2Wed
direct
1h 20mLHR-DUB
5/3Wed
direct
1h 35mDUB-LHR
€97
11/2Tue
1 stop
13h 40mLHR-DUB
25/2Tue
direct
1h 20mDUB-LHR
€98
28/2Fri
1 stopKLM
6h 10mLHR-DUB
3/3Mon
1 stopKLM
7h 55mDUB-LHR
€168
10/2Mon
1 stopKLM
4h 15mLHR-DUB
18/2Tue
1 stopKLM
5h 50mDUB-LHR
€171
9/7Wed
2 stopsLufthansa
9h 30mLHR-ORK
14/7Mon
1 stopLufthansa
5h 00mORK-LHR
€239
19/5Mon
2 stopsLufthansa
9h 00mLHR-ORK
23/5Fri
2 stopsLufthansa
24h 05mORK-LHR
€291

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Recent one-way flight deals

29/1Wed
directAer Lingus
1h 20mLHR-SNN
€49
5/2Wed
directAer Lingus
1h 30mLHR-SNN
€51
12/7Sat
directBritish Airways
1h 25mLHR-DUB
€52
14/4Mon
directBritish Airways
1h 25mLHR-DUB
€53
26/2Wed
1 stopVueling
16h 40mLHR-DUB
€65
5/2Wed
1 stopVueling
16h 40mLHR-DUB
€67
5/3Wed
1 stop
8h 25mLHR-ORK
€78
7/7Mon
1 stop
17h 25mLHR-DUB
€87
19/2Wed
1 stopKLM
5h 00mLHR-DUB
€93
7/3Fri
1 stopKLM
11h 40mLHR-DUB
€99

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Last minute flights from Heathrow to Ireland

Last minute flight, train and bus deals

23/1Thu
directBritish Airways
1h 20mLHR-DUB
24/2Mon
directBritish Airways
1h 35mDUB-LHR
€98
25/1Sat
directBritish Airways
1h 25mLHR-DUB
1/2Sat
directBritish Airways
1h 25mDUB-LHR
€108
23/1Thu
directAer Lingus
1h 30mLHR-SNN
26/1Sun
directAer Lingus
1h 20mSNN-LHR
€112
23/1Thu
directAer Lingus
1h 25mLHR-SNN
26/1Sun
directAer Lingus
1h 20mSNN-LHR
€113
22/1Wed
direct
1h 30mLHR-DUB
24/1Fri
direct
1h 20mDUB-LHR
€157
25/1Sat
multi-stopAir France
7h 50mLHR-DUB
27/1Mon
multi-stopAir France
4h 45mDUB-LHR
€166
25/1Sat
multi-stopAir France
5h 15mLHR-DUB
27/1Mon
multi-stopAir France
7h 40mDUB-LHR
€169
24/1Fri
direct
1h 25mLHR-SNN
27/1Mon
direct
1h 25mSNN-LHR
€183
25/1Sat
multi-stopKLM
6h 10mLHR-DUB
26/1Sun
multi-stopKLM
6h 10mDUB-LHR
€228
26/1Sun
multi-stopKLM
11h 40mLHR-DUB
31/1Fri
multi-stopKLM
5h 50mDUB-LHR
€235

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Everything you need to know for your flight from Heathrow to Ireland

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