Find flights
Insights
When to book
FAQs & Tips
Direct Flights
Airlines
Deals

£34 Find cheap flights from Ireland to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 3/8. 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 29/6
Sat 6/7

Search hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
In the last 7 days, travellers have searched 42,686,544 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.

Flights to Heathrow - Travel Insights & Trends

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

What is the cheapest flight to London Heathrow Airport?

These are the best prices found by users searching on KAYAK in the last 72 hours.
The cheapest airline ticket to London Heathrow Airport from the Ireland in the last 72 hours was £26 one-way, and £86 round-trip on the route from Dublin to London Heathrow Airport. The most popular route is from Cork to London Heathrow Airport and the cheapest ticket found on this route in the last 72 hours was £115 return.

How much is a flight to London Heathrow Airport?

The average and cheapest price for all flights to London Heathrow Airport from each origin found by users searching on KAYAK in the last month.
On average, a flight to London Heathrow Airport costs £249. The cheapest price found on KAYAK in the last 2 weeks cost £44 and departed from Dublin. The most popular routes on KAYAK are Dublin to London Heathrow Airport which costs £468 on average, and Cork to London Heathrow Airport, which costs £153 on average.
See prices from:

What is the cheapest day to fly to London?

The average price of all flights to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to London is Tuesday where tickets can be as cheap as £87. On the other hand, the most expensive day to fly is Sunday, where prices are £132 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to London Heathrow Airport, 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 to London Heathrow Airport is January, where tickets cost £93 on average for one-way flights. On the other hand, the most expensive months are May and April, where the average cost of tickets from Ireland is £161 and £145 respectively. For return trips, the best month to travel is January with an average price of £75.

What is the cheapest time of day to fly to London Heathrow Airport?

The average price for all flights to London Heathrow Airport depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to London Heathrow Airport is generally at night, when flights cost £94 on average. The most expensive time of day to fly to London Heathrow Airport is generally in the afternoon, which is peak travel time and where the average cost of a ticket is £118.

What is a good deal for flights to London Heathrow Airport?

If you’re looking for cheap airfare to London Heathrow Airport, 25% of our users found tickets to London Heathrow Airport for the following prices or less: From Dublin £61 one-way - £268 return, from Cork £64 one-way - £137 return, from Shannon £64 one-way - £52 return.

How far in advance should I book a flight to London Heathrow Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 80 days before departure.

Which airline offers the most flights to London Heathrow Airport?

Of the 2 airlines that fly to London Heathrow Airport, British Airways offers the most flights, with around 336 per week, followed by Loganair with 31 flights per week.

How long is the flight to London Heathrow Airport?

The duration of your flight to London depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to London on KAYAK are from Cork, which takes 1h 15m, Shannon, which takes 1h 15m, Dublin, which takes 1h 20m, and Knock, which takes 1h 25m.

How many direct flights to London Heathrow Airport are there each day?

There are around 53 direct flights from within Ireland to London Heathrow Airport every day. Most flights depart in the morning, with 10:00 the most common departure time and 51% of flights departing in the morning.

How many direct flights to London Heathrow Airport are there each week?

Each week there are around 367 direct flights from within Ireland to London Heathrow Airport. The most common day for departures is Thursday, with 16% of flights taking off on this day.

How many long-haul flights are there to London Heathrow Airport each week?

There are not any long-haul (6-12 hour flight duration) or medium-haul (3-6 hour flight duration) flights to London Heathrow Airport. Instead, there are 194 short-haul flights (up to 3 hour flight duration), with the most arriving from Dublin.

How many cities have direct flights to London Heathrow Airport?

From Ireland, there are direct flights to London Heathrow Airport from 4 cities. The city with the most direct flights is Dublin, with 139 direct flights each week.

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

Low season

November

High season

July

Cheapest flight

£34
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (8% more expensive on average)
Flight from Dublin to London Heathrow Airport

FAQs - booking London Heathrow Airport flights

  • What is the cheapest flight to London Heathrow Airport?

    The cheapest airline ticket to London Heathrow Airport from the Ireland in the last 72 hours was £26 one-way, and £86 round-trip on the route from Dublin to London Heathrow Airport. The most popular route is from Cork to London Heathrow Airport and the cheapest ticket found on this route in the last 72 hours was £115 return.

  • How far is London Heathrow Airport from central London?

    The distance between London Heathrow Airport and the city centre of London is 14 miles.

  • How much is a flight to London?

    On average, a flight to London costs £249. The cheapest price found on KAYAK in the last 2 weeks cost £44 and departed from Dublin Airport.

  • How does KAYAK find such low prices on flights to London Heathrow Airport?

    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 to London Heathrow Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to 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 to London Heathrow Airport?

    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 London Heathrow Airport 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 to London Heathrow Airport?

    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 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 cheap flights to London Heathrow Airport

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London Heathrow Airport flight deals.

Prefer to fly direct to London Heathrow?

Find which airlines fly direct to Heathrow, which days they fly and book direct flights.

Direct departures

Ireland to London Heathrow

Monday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Tuesday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Wednesday

ANA, AccesRail, Aegean Airlines, +90 more

ANA, AccesRail, +91 more

Thursday

ANA, AccesRail, Aegean Airlines, +85 more

ANA, AccesRail, +86 more

Friday

ANA, AccesRail, Aegean Airlines, +92 more

ANA, AccesRail, +93 more

Saturday

ANA, AccesRail, Aegean Airlines, +87 more

ANA, AccesRail, +88 more

Sunday

ANA, AccesRail, Aegean Airlines, +90 more

ANA, AccesRail, +91 more

See more direct flights

Direct returns

London Heathrow to Ireland

Monday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Tuesday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Wednesday

ANA, AccesRail, Aegean Airlines, +90 more

ANA, AccesRail, +91 more

Thursday

ANA, AccesRail, Aegean Airlines, +85 more

ANA, AccesRail, +86 more

Friday

ANA, AccesRail, Aegean Airlines, +92 more

ANA, AccesRail, +93 more

Saturday

ANA, AccesRail, Aegean Airlines, +87 more

ANA, AccesRail, +88 more

Sunday

ANA, AccesRail, Aegean Airlines, +90 more

ANA, AccesRail, +91 more

See more direct flights
See more direct flights

Top 3 airlines serving from Ireland to Heathrow

 
See real verified KAYAK customer reviews for airlines flying to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to London. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Heathrow? 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.
7.2
Aer LingusOverall score based on 1306 reviews
8.0Crew
6.6Food
7.0Entertainment
7.1Comfort
7.3Boarding
Airline reviews

Plane could have been cleaner. There were many crumbs and crud around the seat mounts.

8.0 ExcellentJohn, May 2024SNN - BOS
Read more about Aer Lingus reviews

Plane could have been cleaner. There were many crumbs and crud around the seat mounts.

I fly to the USA every 6wks on Ave and 99% of the time I fly Aer Lingus. If I fly BA I’m always disappointed. My only criticism is the food. I’m vegan and over the last year it’s got slightly better these last couple of flights but on the whole it’s not good! Salad and fruit salad for breakfast and that’s also the starter and desert for the lunch/dinner and the main is usually rice with fried veg 😳the pasta is pretty good though. That’s been the last 2 meals…. Everything else is fantastic.

The flight was half full and I presume that the next few days are even less busy not sure why they are still charging a premium to change a flight.

Short flight so not much to rate. Surprised I had to pay for a soda.

the room on the plane was good but that is because flight not sold the other three seat and I had room. the food in terrible.

First the price I paid was excellent, my flight was full, but my seat was roomy. The one downside to the experience was they had games on the entertainment console. The guy behind me poked at my head about half the flight. I hope they get rid of this feature.

Very good need to offer better choice of food for business

They should. Heck planes more often not when they are suppose to be leaving causing delays

Crew was fantastic got lovely food and plenty of water. Entertainment was good. Never had to ask for anything. Left on time and got to Seattle early. Luggage did not take long either.

Always find Aer Lingus reliable and good value for money. Food on this flight was pretty basic and the headphone Jack at my seat only worked for one ear. Little disappointed in movie selection, limited on recent releases. Staff are okay - but I always buy a cheap ticket so not like I expect first class opulence anyway!!!

Good, everything went straight forward and on time, I am satisfied

Perfect timing, perfect departure, lovely crew on the ground and in the air.

Good flight. Take off a little late but make up the time

Everything’s went straight forward, no issues, good service and friendly crew

Left on time and arrived on time both ways, thank you

The flight was 45 mins delayed but the crew provided water and necessities like tissues

Cheap flights as you expect with Ryanair. I would take cheaper flights over entertainment and comfort for short haul travel. Main issue is usually delays at airports. In this case we landed roughly 2hr30 later than planned due to earlier delays with the plane. Not the worst I imagine

We each paid for 10kg checked in luggage. Flying out there were no issues sharing one case (20kg). Not so coming back. Additional £48 charge and unable to provide an explanation of why it was ok on one journey but not the other, or indeed what material difference it makes between 2x10kg cases vs 1x20kg case. Scam, and appalling from Ryanair.

Easy process and good flight experience The food good be better

I didn't like. The seats and the floor were very dirty and it is not the first time

Very bed boarding, there was overbooked and make a lot of problems and noises

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

Taking off and landing were smooth. I didn't have anything to complain about.

The sad case is that BA is often late. I missed my connection outbound and then was rebooked in another biz class seat some 10 hours later. I opted to change to economy (no compensation refunded of course) that was only 5 hours later. On the return journey, once again changing planes was very challenging. This time we landed only a little bit late, but deplaning took a long time so the connection was very much in doubt. Some serious running and sweat later, I managed to make the connection but my luggage did not. No messages about the missing luggage, so I had to wait until the entire bag return process was over before seeking out an agent. There was only one and well over 50 passengers waiting to speaking with her. She was quite pleasant, but it took 1 hour and 45 minutes from touchdown to leaving the airport.

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

BA charged me 70 euros for one bag on my return after having recognized my frequent flier status and charging me nothing for the same bag on the outbound. Their employees are not well trained and rules are inconsistently applied.

I couldn’t select my seat until I checked in at the airport. Extremely difficult to talk to a customer service representative. Also, the gate announcement doesn’t appear until less than an hour before boarding.

They over sold the flight and I was not able to board. Had to buy two tickets so I would not miss my connection.

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

On the flight from Venice to London even it’s short, 2 hours 20 minutes and mostly people are on vacation, it’s ridiculous to change money for the cup of tea or coffee. Also it’s to much to charge 80$ for 1 piece of luggage

Book cheap flights from Ireland to London

Recent return flight deals

 
These are the cheapest return flights to London found on KAYAK in the last 72 hours.
27/6Thu
directAer Lingus
1h 20mDUB-LHR
4/7Thu
directAer Lingus
1h 20mLHR-DUB
£110
10/8Sat
directBritish Airways
1h 20mDUB-LHR
11/8Sun
directBritish Airways
1h 30mLHR-DUB
£111
26/6Wed
directBritish Airways
1h 20mDUB-LHR
3/7Wed
directBritish Airways
1h 25mLHR-DUB
£112
6/7Sat
directAer Lingus
1h 25mDUB-LHR
11/7Thu
directAer Lingus
1h 20mLHR-DUB
£112
12/10Sat
1 stopLufthansa
4h 35mDUB-LHR
20/10Sun
1 stopLufthansa
6h 05mLHR-DUB
£144
9/7Tue
1 stopSWISS
13h 05mDUB-LHR
16/7Tue
1 stopSWISS
12h 00mLHR-DUB
£147
28/9Sat
1 stopLufthansa
4h 50mDUB-LHR
30/9Mon
1 stopLufthansa
4h 45mLHR-DUB
£148
6/10Sun
1 stopKLM
4h 50mDUB-LHR
10/10Thu
1 stopKLM
4h 55mLHR-DUB
£149
15/6Sat
1 stopKLM
6h 40mDUB-LHR
18/6Tue
1 stopKLM
3h 55mLHR-DUB
£159
8/11Fri
2 stopsSWISS
19h 15mDUB-LHR
10/11Sun
1 stopSWISS
16h 25mLHR-DUB
£173

Search by stops

Search by airline

Search by price

Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to London found on KAYAK in the last 72 hours.
3/8Sat
directBritish Airways
1h 20mDUB-LHR
£34
20/8Tue
directBritish Airways
1h 20mDUB-LHR
£35
25/6Tue
directAer Lingus
1h 20mDUB-LHR
£46
18/6Tue
directAer Lingus
1h 15mORK-LHR
£46
2/7Tue
1 stopVueling
22h 40mDUB-LHR
£50
13/6Thu
1 stopVueling
5h 10mDUB-LHR
£54
12/11Tue
1 stopIberia
9h 50mDUB-LHR
£62
24/9Tue
1 stopScandinavian Airlines
9h 05mDUB-LHR
£63
8/10Tue
1 stopScandinavian Airlines
9h 00mDUB-LHR
£73
12/10Sat
1 stopIberia
7h 50mDUB-LHR
£95

Search by stops

Search by airline

Search by price

Last minute flights to Heathrow

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to London that are departing in the next 10 days.
4/6Tue
directAer Lingus
1h 25mDUB-LHR
8/6Sat
directAer Lingus
1h 20mLHR-DUB
£117
3/6Mon
directAer Lingus
1h 15mSNN-LHR
10/6Mon
directAer Lingus
1h 25mLHR-SNN
£122
4/6Tue
directBritish Airways
1h 20mDUB-LHR
4/6Tue
directBritish Airways
1h 25mLHR-DUB
£153
4/6Tue
direct
1h 20mDUB-LHR
8/6Sat
multi-stop
12h 00mLHR-DUB
£175
3/6Mon
direct
1h 25mDUB-LHR
17/10Thu
multi-stop
8h 05mLHR-DUB
£176
4/6Tue
directBritish Airways
1h 20mDUB-LHR
5/6Wed
directBritish Airways
1h 25mLHR-DUB
£183
4/6Tue
multi-stopKLM
10h 50mDUB-LHR
8/6Sat
multi-stopKLM
3h 55mLHR-DUB
£217
3/6Mon
multi-stopScandinavian Airlines
6h 10mDUB-LHR
6/6Thu
multi-stopScandinavian Airlines
17h 10mLHR-DUB
£221
3/6Mon
multi-stopScandinavian Airlines
6h 10mDUB-LHR
17/10Thu
multi-stopScandinavian Airlines
5h 10mLHR-DUB
£223
2/6Sun
multi-stopKLM
25h 45mDUB-LHR
9/6Sun
multi-stopKLM
25h 40mLHR-DUB
£303

Search by stops

Search by airline

Search by price