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Cheap flights from Ireland to London from €41

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to London departing on 29/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ireland to London

Recent return flight deals from Ireland to London

Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
14:40 - 16:10LHR-SNN
1h 30mdirect
€82Aer Lingus
Find Deal
Tue, 14 Oct - Tue, 21 Oct
Aer Lingus Logo
12:00 - 13:25DUB-LHR
1h 25mdirect
Aer Lingus Logo
07:40 - 09:00LHR-DUB
1h 20mdirect
€84Aer Lingus
Find Deal
Tue, 14 Oct - Tue, 21 Oct
British Airways Logo
13:10 - 14:35DUB-LHR
1h 25mdirect
British Airways Logo
06:30 - 07:55LHR-DUB
1h 25mdirect
€88British Airways
Find Deal
Thu, 22 Jan - Fri, 23 Jan
British Airways Logo
10:45 - 12:20DUB-LHR
1h 35mdirect
British Airways Logo
18:20 - 19:45LHR-DUB
1h 25mdirect
€89British Airways
Find Deal
Mon, 1 Dec - Thu, 4 Dec
Aer Lingus Logo
17:30 - 18:55SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€89Aer Lingus
Find Deal
Sat, 11 Oct - Mon, 13 Oct
Aer Lingus Logo
20:30 - 21:45ORK-LHR
1h 15mdirect
Aer Lingus Logo
22:25 - 23:45LHR-ORK
1h 20mdirect
€89Aer Lingus
Find Deal
Tue, 14 Oct - Tue, 21 Oct
British Airways Logo
10:55 - 12:30DUB-LHR
1h 35mdirect
British Airways Logo
13:20 - 14:50LHR-DUB
1h 30mdirect
€89British Airways
Find Deal
Tue, 25 Nov - Fri, 28 Nov
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€89Aer Lingus
Find Deal
Fri, 3 Oct - Fri, 10 Oct
Aer Lingus Logo
12:00 - 13:25DUB-LHR
1h 25mdirect
Aer Lingus Logo
15:50 - 17:15LHR-DUB
1h 25mdirect
€90Aer Lingus
Find Deal
Mon, 20 Oct - Tue, 21 Oct
Multiple Airlines Logo
17:35 - 18:50ORK-LHR
1h 15mdirect
Multiple Airlines Logo
19:35 - 21:00LHR-ORK
1h 25mdirect
€135Multiple Airlines
Find Deal
Fri, 31 Oct - Fri, 7 Nov

Aer Lingus flights from Ireland to London Heathrow Airport

Our best Aer Lingus deals on Ireland to London Heathrow Airport flight tickets
Aer Lingus
14 Oct
SNN21:15Shannon
1h 25m
LHR22:40London Heathrow
21 Oct
LHR14:40London Heathrow
1h 30m
SNN16:10Shannon
€82
Find similar
Aer Lingus
14 Oct
DUB12:00Dublin
1h 25m
LHR13:25London Heathrow
21 Oct
LHR07:40London Heathrow
1h 20m
DUB09:00Dublin
€84
Find similar
Aer Lingus
11 Oct
SNN17:30Shannon
1h 25m
LHR18:55London Heathrow
13 Oct
LHR19:10London Heathrow
1h 25m
SNN20:35Shannon
€89
Find similar

British Airways flights from Ireland to London Heathrow Airport

Our best British Airways deals on Ireland to London Heathrow Airport flight tickets
British Airways
22 Jan
DUB13:10Dublin
1h 25m
LHR14:35London Heathrow
23 Jan
LHR06:30London Heathrow
1h 25m
DUB07:55Dublin
€88
Find similar
British Airways
1 Dec
DUB10:45Dublin
1h 35m
LHR12:20London Heathrow
4 Dec
LHR18:20London Heathrow
1h 25m
DUB19:45Dublin
€89
Find similar
British Airways
25 Nov
DUB10:55Dublin
1h 35m
LHR12:30London Heathrow
28 Nov
LHR13:20London Heathrow
1h 30m
DUB14:50Dublin
€89
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Ireland to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 18 September 2025.
Use the filters below to find and compare flights from Ireland to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Tue 14/10

21:15-22:40

Nonstop1h 25m

London Heathrow

Tue 21/10

14:40-16:10

Nonstop1h 30m

€82

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 14/10

12:00-13:25

Nonstop1h 25m

London Heathrow

Tue 21/10

07:40-09:00

Nonstop1h 20m

€84

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 22/1

13:10-14:35

Nonstop1h 25m

London Heathrow

Fri 23/1

06:30-07:55

Nonstop1h 25m

€88

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 1/12

10:45-12:20

Nonstop1h 35m

London Heathrow

Thu 4/12

18:20-19:45

Nonstop1h 25m

€89

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 11/10

17:30-18:55

Nonstop1h 25m

London Heathrow

Mon 13/10

19:10-20:35

Nonstop1h 25m

€89

CorkLondon

ORK - LHR

ORKLHR

Cork

Tue 14/10

20:30-21:45

Nonstop1h 15m

London Heathrow

Tue 21/10

22:25-23:45

Nonstop1h 20m

€89

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 25/11

10:55-12:30

Nonstop1h 35m

London Heathrow

Fri 28/11

13:20-14:50

Nonstop1h 30m

€89

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Fri 3/10

21:15-22:40

Nonstop1h 25m

London Heathrow

Fri 10/10

19:10-20:35

Nonstop1h 25m

€89

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 20/10

12:00-13:25

Nonstop1h 25m

London Heathrow

Tue 21/10

15:50-17:15

Nonstop1h 25m

€90

CorkLondon

ORK - LHR

ORKLHR

Cork

Fri 31/10

17:35-18:50

Nonstop1h 15m

London Heathrow

Fri 7/11

19:35-21:00

Nonstop1h 25m

€135

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Ireland to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

The month of February is another great option to travel to London Heathrow Airport, with average flight prices from Ireland averaging around €118.

What is the cheapest day to depart on your flight to London Heathrow Airport?

The cheapest day to depart on your flight to London Heathrow Airport is on a Friday when prices can be found for as low as €474. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Ireland because it is more convenient for both business and leisure travellers. As a result, prices tend to be around €675.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Ireland to London Heathrow Airport in the evening for as low as €181. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are €765 on average. Flights to London Heathrow Airport from Ireland in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Ireland to London Heathrow flight route?

Fly from Shannon to London Heathrow for the best Ireland - London Heathrow flight prices

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

You are more likely to see cheaper flights to London Heathrow Airport from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around €138 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Ireland for as low as €89 on momondo.

What cabin class options are available on Ireland to London Heathrow flights?

There are 3 cabin classes available to choose from on Ireland to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ireland to London Heathrow Airport flights?

No. A direct flight is the cheapest option for a flight between Ireland to London Heathrow Airport.

Cheap Ireland to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to London Heathrow Airport

Best price found

€95

Fastest flight time

1h 15m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Ireland in the past 72 hours is €95. The best return flight deal from Ireland to London Heathrow Airport found on momondo in the last 72 hours is €108.
The fastest flight from Ireland to London Heathrow Airport takes 1h 15m
Direct flights go from Ireland to London Heathrow Airport every day.
Search flight deals

  • When did momondo last update prices for flights from Ireland to London Heathrow Airport?

    Prices for flights from Ireland to London Heathrow Airport were last updated today.

  • How many operators does momondo search for flights from Ireland to London Heathrow Airport?

  • How old do you have to be to fly from Ireland to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ireland to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Ireland to London Heathrow Airport?

Best airlines flying from Ireland to London Heathrow Airport

Compare and see reviews for airlines that fly from Ireland to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom €81Free CancellationRating
6.7
7,373 reviews
Search British Airways flights
Aer LingusPriceFrom €82Free CancellationRating
7.2
1,281 reviews
Search Aer Lingus flights

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Why use momondo?

Why should I use momondo to find a flight deal from Ireland to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ireland to London . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ireland to London with flexible booking policies on momondo?

Yes. All flights to London from Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ireland to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ireland to London.

I’m not ready to book a flight from Ireland to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Ireland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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