€54 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 2/9. 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.
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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€83
Cork
Corkdirect€99
Shannon
Shannondirect€90
Knock
Knockdirect€96
Donegal
Donegal1 stop€178
Milltown (Kerry)
Milltown (Kerry)1 stop€174

Cheap Flight Deals from Heathrow to Ireland (LHR-IE0)

 
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.

Recent return flight deals from Heathrow to Ireland

Recommended return flight deals departing in the coming months from the most popular airlines that fly from Heathrow to Ireland.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
06:20 - 07:45LHR-DUB
1h 25mdirect
20:20 - 21:40DUB-LHR
1h 20mdirect
€83British Airways
Find Deal
Tue, 9 Sep - Tue, 16 Sep
06:20 - 07:45LHR-DUB
1h 25mdirect
08:35 - 10:10DUB-LHR
1h 35mdirect
€85British Airways
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Thu, 24 Apr - Tue, 29 Apr
19:10 - 20:35LHR-SNN
1h 25mdirect
16:55 - 18:20SNN-LHR
1h 25mdirect
€90Aer Lingus
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Wed, 2 Apr - Wed, 23 Apr
14:40 - 16:10LHR-SNN
1h 30mdirect
21:15 - 22:40SNN-LHR
1h 25mdirect
€92Aer Lingus
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Tue, 13 May - Fri, 23 May
19:40 - 20:50LHR-DUB
1h 10mdirect
17:55 - 19:15DUB-LHR
1h 20mdirect
€126
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Sat, 17 May - Wed, 21 May
22:25 - 23:45LHR-ORK
1h 20mdirect
20:30 - 21:45ORK-LHR
1h 15mdirect
€144
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Wed, 21 May - Thu, 29 May
06:40 - 18:15LHR-DUB
11h 35m1 stop
12:20 - 18:50DUB-LHR
6h 30m1 stop
€171Scandinavian Airlines
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Wed, 7 May - Fri, 9 May
15:05 - 07:25LHR-DUB
16h 20m1 stop
19:30 - 14:15DUB-LHR
18h 45m1 stop
€179Vueling
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Thu, 24 Apr - Tue, 29 Apr
15:05 - 07:25LHR-DUB
16h 20m1 stop
19:30 - 14:15DUB-LHR
18h 45m1 stop
€181Vueling
Find Deal
Thu, 24 Apr - Tue, 29 Apr
06:40 - 11:50LHR-DUB
5h 10m1 stop
12:40 - 18:30DUB-LHR
5h 50m1 stop
€183Scandinavian Airlines
Find Deal
Wed, 23 Apr - Fri, 25 Apr

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 Shannon, at €84 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 €89.

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

The average price for all round-trip flights from London Heathrow Airport to Ireland depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Ireland is generally in the morning, when retur flights cost €163 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.

Can I save money by flying with a stopover from London Heathrow Airport 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 €159, prices are generally cheapest when you fly direct.

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 €128 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of return tickets is €167 and €156 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, Wednesday is the cheapest day to fly on average and Sunday 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 15 weeks before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low season

January

High season

August

Cheapest flight

€54
Best time to beat the crowds (34% less expensive on average)
Most popular time to fly and prices are also 6% 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.

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 €90 one-way - €118 round-trip

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.
7.0
Aer LingusOverall score based on 1063 reviews
7.2Boarding
6.4Food
7.0Comfort
6.7Entertainment
7.9Crew
Airline reviews

Very polite and helpful staff. Jet blue…ok, but not as helpful!..

10.0 ExcellentRALPH, Feb 2025MAN - DUB
Read more Aer Lingus reviews

Very polite and helpful staff. Jet blue…ok, but not as helpful!..

Seat was very uncomfortable. The worst in all of my travels. It sagged in the middle, worse than anything any airline can offer. Not flying aer lingus again.

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.

There was a very drunk and disruptive passenger who was on the plane, right behind me. He was already drunk before boarding but was still let on the plane. He kept kicking and hitting the back of my chair the entire flight. It was an early morning flight and had zero rest on that leg

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.

I didn’t realize Aer Lingus was a “nickel and dime” kind of airline where you had to separately buy all the amenities you wanted. The push to purchase duty-free beauty products was off-putting. And our row had the least amount of leg room I’ve ever dealt with on a flight.

They overbooked the flight by 3 people. It is completely unacceptable to tell 3 people, with paid tickets, that need to get home for children etc, that they need to stay another night. No compensation. No apology.

It was a short flight but everything was great! I would fly with British Airways again.

Delayed flight due to lack of crew caused me to miss my connection

Please make sure the number of seats matches the number of overhead bins and passengers don't carry on more than one bag.

It was difficult to board from London to accra. Had to get there an hour before and almost missed the flight. Did not get enough rest time at the lounge

Seating is tight if you don’t upgrade. Food was decent. Boarding and unboarding was efficient. Smooth flight. Could make upgrades more affordable

American Airlines seemed to run a 'dry' flight. No alcohol was offered at any point with meals. Breakfast was a bit tasteless. The 'hot pocket' whatever that is, was horrid breadish pastry with very little filling. Decaf coffee was horrid. Seats didn't seem as wide or spacious as usual, especually for a ten hour flight.

We found the bag drop/ check-in proceedure at T5 unnecessarily complicated. We paid extra for seat selection in advance and were allocated worse seats at T5. We found the check-in person was not particularly helpful although the the staff at the gate were super good.

Very dated plane. Seat was firm and uncomfortable. Entertainment system almost laughably outdated. Poor audio. Picture was always too dark.

The seats on the plane and at Heathrow Airport are so uncomfortable

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

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