€52 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 8/10. 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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Flights Deals

Best Ireland Flight Deals from Heathrow

Cheapest return prices found by our users on KAYAK in the last 72 hours
Dublin
Dublindirect€83
Cork
Corkdirect€107
Shannon
Shannondirect€111
Knock
Knockdirect€104
Donegal
Donegal1 stop€215
Milltown (Kerry)
Milltown (Kerry)1 stop€191
Dublin
Dublindirect€83
Cork
Corkdirect€107
Shannon
Shannondirect€111
Knock
Knockdirect€104
Donegal
Donegal1 stop€215
Milltown (Kerry)
Milltown (Kerry)1 stop€191

Cheap Flights from Heathrow to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow 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 Heathrow to Ireland

Wed, 10 Sep - Wed, 24 Sep
British Airways Logo
06:15 - 07:40LHR-DUB
1h 25mdirect
British Airways Logo
20:20 - 21:40DUB-LHR
1h 20mdirect
€83British Airways
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Thu, 28 Aug - Wed, 10 Sep
British Airways Logo
06:20 - 07:45LHR-DUB
1h 25mdirect
British Airways Logo
20:20 - 21:40DUB-LHR
1h 20mdirect
€84British Airways
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Tue, 8 Jul - Wed, 23 Jul
Aer Lingus Logo
11:05 - 12:35LHR-NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30NOC-LHR
1h 25mdirect
€104Aer Lingus
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Tue, 8 Jul - Thu, 10 Jul
Aer Lingus Logo
11:05 - 12:35LHR-NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30NOC-LHR
1h 25mdirect
€106Aer Lingus
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Tue, 8 Jul - Thu, 10 Jul
 Logo
11:05 - 12:35LHR-NOC
1h 30mdirect
 Logo
08:55 - 19:05NOC-LHR
10h 10m1 stop
€140
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Thu, 24 Jul - Sun, 27 Jul
 Logo
06:20 - 07:45LHR-DUB
1h 25mdirect
 Logo
07:30 - 09:05DUB-LHR
1h 35mdirect
€144
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Wed, 9 Jul - Tue, 22 Jul
Vueling Logo
15:05 - 07:35LHR-DUB
16h 30m1 stop
Vueling Logo
19:05 - 14:15DUB-LHR
19h 10m1 stop
€162Vueling
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Thu, 3 Jul - Tue, 8 Jul
Vueling Logo
15:05 - 07:25LHR-DUB
16h 20m1 stop
Vueling Logo
19:05 - 14:15DUB-LHR
19h 10m1 stop
€169Vueling
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Tue, 16 Sep - Tue, 23 Sep
Scandinavian Airlines Logo
06:40 - 11:50LHR-DUB
5h 10m1 stop
Scandinavian Airlines Logo
12:40 - 17:40DUB-LHR
5h 00m1 stop
€180Scandinavian Airlines
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Fri, 10 Oct - Fri, 17 Oct
Scandinavian Airlines Logo
21:05 - 19:15LHR-DUB
22h 10m1 stop
Scandinavian Airlines Logo
12:20 - 09:35DUB-LHR
21h 15m1 stop
€187Scandinavian Airlines
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Useful Info

KAYAK's insights & trends for Heathrow to Ireland flights

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

What is the cheapest London Heathrow Airport to Ireland flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from London Heathrow Airport to Ireland.

The cheapest ticket to Ireland from London Heathrow Airport found in the last 72 hours was to Knock, at €128 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 €147.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport 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 Heathrow Airport to Ireland is January, when tickets cost €120 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of return tickets is €171 and €159 respectively.

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

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

For London Heathrow Airport to Ireland, Thursday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Ireland back to London Heathrow Airport, the best deals are generally found on Friday, with Sunday being the most expensive.

How far in advance should I book a flight from London Heathrow Airport 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 Heathrow Airport 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 the flight from London Heathrow Airport to Ireland, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.


Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight€52
Best time to beat the crowds (34% less expensive on average)
Most popular time to fly and prices are also 4% 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 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.

  • What is the cheapest time of day to fly to Ireland?

    The cheapest time of day to fly to Ireland is generally in the morning, when retur flights cost €164 on average. Morning departures are around 3% cheaper 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 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 1117 reviews
6.8Entertainment
7.9Crew
7.0Comfort
7.2Boarding
6.4Food
Airline reviews

I would definitely use a Linus again, the price was right, the service is excellent. No delays. Wish I had a direct flight from my hometown Detroit.

10.0 ExcellentAnonymous, Jun 2025MAN - MCO
Read more Aer Lingus reviews

I would definitely use a Linus again, the price was right, the service is excellent. No delays. Wish I had a direct flight from my hometown Detroit.

There was no room in the seats, smallest room we've ever had and the food was awful.

I dont fly them much anymore. Other carries offere better pricing and better seating options

Seats weren't very comfortable for a long haul flight but the service made up for it.

This flight was of exactly the same high standard as the outbound leg, exactly a week earlier - except that we didn't have any food or drink because it departed at around midnight.

The Glasgow to Dublin route was very efficiently boarded, flight and landing and disembarkation were all super smooth. Dublin to JFK flight I was very pleasantly surprised overall. This was my first time on Aer Lingus and having already come off the short regional flight I was curious to know how the international flight would go. Aircraft was solid, entertainment options were better than expected, flight crew were experienced and operated like clockwork. Main entree left a little something to be desired but the snack was very tasty. Boarding and disembarkation again very smooth and pilots got us in earlier than expected. Would definitely fly again

I liked how they looked after couples by providing a row of 4 seats if available.

Food was very bad. Boarding was disorganized and messy. Crew was friendly

It was ok not that much because I always travel with Emirates airlines, Etihad, airlines, Qatar airlines compare to them food and comfortable was too low . Staff was good . Helpful

I believe it was short flight in plane I understand not that much compared to other airlines but weighting for checkin was too long need extra person for checkin or Atleast someone to let the customer knows don’t worry someone will be here shortly.

I didn’t have food and they don’t include entertainment. Not much leg room at all. Staff were great.

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

Business class was nothing more than Economy with middle seat empty. Uncomfortable seat and leg room. A mom behind me had a 18 month/2 yr old on her lap, who had his feet on my back all the time- while middle seat remained empty. Pretty much not worth the fare. Very disappointed.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

charging port did not work, no entertainment system. Other than that the flight was good and safe.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

When Stephen arrived with our wheel chairs - we were in excellent hands! He was such great help with getting our rental car and then reporting our missing luggage. When you are exhausted from traveling for too many hours, he was just what we needed to navigate everything! Give that guy a raise!

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

Gate information deliberately delayed to only one hour B4 flight, lack of info finding gate.

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

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