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Cheap flights from Ireland to London from £36

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 22/11. 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

Enter your travel dates to find the best prices.
British Airways Logo
20:40 - 22:00DUB-LHR
1h 20mdirect
British Airways Logo
06:30 - 07:55LHR-DUB
1h 25mdirect
£71British Airways
Find Deal
Thu, 11 Dec - Mon, 15 Dec
British Airways Logo
10:45 - 12:20DUB-LHR
1h 35mdirect
British Airways Logo
13:35 - 15:05LHR-DUB
1h 30mdirect
£71British Airways
Find Deal
Mon, 19 Jan - Mon, 26 Jan
British Airways Logo
20:35 - 21:55DUB-LHR
1h 20mdirect
British Airways Logo
06:30 - 07:55LHR-DUB
1h 25mdirect
£72British Airways
Find Deal
Fri, 12 Dec - Mon, 15 Dec
British Airways Logo
16:05 - 17:30DUB-LHR
1h 25mdirect
British Airways Logo
08:25 - 09:50LHR-DUB
1h 25mdirect
£74British Airways
Find Deal
Sat, 13 Dec - Sun, 14 Dec
British Airways Logo
17:55 - 19:15DUB-LHR
1h 20mdirect
British Airways Logo
18:25 - 19:50LHR-DUB
1h 25mdirect
£74British Airways
Find Deal
Sat, 15 Nov - Sat, 29 Nov
Aer Lingus Logo
13:00 - 14:30NOC-LHR
1h 30mdirect
Aer Lingus Logo
10:55 - 12:25LHR-NOC
1h 30mdirect
£94Aer Lingus
Find Deal
Mon, 10 Nov - Wed, 19 Nov
Aer Lingus Logo
13:00 - 14:30NOC-LHR
1h 30mdirect
Aer Lingus Logo
10:55 - 12:25LHR-NOC
1h 30mdirect
£95Aer Lingus
Find Deal
Wed, 12 Nov - Wed, 19 Nov
Aer Lingus Logo
13:00 - 14:30NOC-LHR
1h 30mdirect
Aer Lingus Logo
10:55 - 12:25LHR-NOC
1h 30mdirect
£96Aer Lingus
Find Deal
Thu, 20 Nov - Mon, 24 Nov
Aer Lingus Logo
20:10 - 21:25ORK-LHR
1h 15mdirect
Aer Lingus Logo
22:05 - 23:25LHR-ORK
1h 20mdirect
£96Aer Lingus
Find Deal
Sat, 29 Nov - Mon, 1 Dec
Multiple Airlines Logo
19:45 - 21:05DUB-LHR
1h 20mdirect
Multiple Airlines Logo
06:30 - 07:55LHR-DUB
1h 25mdirect
£102Multiple Airlines
Find Deal
Fri, 19 Dec - Fri, 2 Jan

British Airways flights from Ireland to London Heathrow Airport

Our best British Airways deals on Ireland to London Heathrow Airport flight tickets
British Airways
11 Dec
DUB20:40Dublin
1h 20m
LHR22:00London Heathrow
15 Dec
LHR06:30London Heathrow
1h 25m
DUB07:55Dublin
£71
Find similar
British Airways
19 Jan
DUB10:45Dublin
1h 35m
LHR12:20London Heathrow
26 Jan
LHR13:35London Heathrow
1h 30m
DUB15:05Dublin
£71
Find similar
British Airways
12 Dec
DUB20:35Dublin
1h 20m
LHR21:55London Heathrow
15 Dec
LHR06:30London Heathrow
1h 25m
DUB07:55Dublin
£72
Find similar

Aer Lingus flights from Ireland to London Heathrow Airport

Our best Aer Lingus deals on Ireland to London Heathrow Airport flight tickets
Aer Lingus
5 Nov
NOC13:00Knock Intl
1h 30m
LHR14:30London Heathrow
12 Nov
LHR10:55London Heathrow
1h 30m
NOC12:25Knock Intl
£94
Find similar
Aer Lingus
12 Nov
NOC13:00Knock Intl
1h 30m
LHR14:30London Heathrow
19 Nov
LHR10:55London Heathrow
1h 30m
NOC12:25Knock Intl
£95
Find similar
Aer Lingus
20 Nov
NOC13:00Knock Intl
1h 30m
LHR14:30London Heathrow
24 Nov
LHR10:55London Heathrow
1h 30m
NOC12:25Knock Intl
£96
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 279,928 searches. Data last updated 31 October 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

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 11/12

20:40-22:00

Nonstop1h 20m

London Heathrow

Mon 15/12

06:30-07:55

Nonstop1h 25m

£71

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 19/1

10:45-12:20

Nonstop1h 35m

London Heathrow

Mon 26/1

13:35-15:05

Nonstop1h 30m

£71

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 12/12

20:35-21:55

Nonstop1h 20m

London Heathrow

Mon 15/12

06:30-07:55

Nonstop1h 25m

£72

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 13/12

16:05-17:30

Nonstop1h 25m

London Heathrow

Sun 14/12

08:25-09:50

Nonstop1h 25m

£74

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 15/11

17:55-19:15

Nonstop1h 20m

London Heathrow

Sat 29/11

18:25-19:50

Nonstop1h 25m

£74

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Mon 10/11

13:00-14:30

Nonstop1h 30m

London Heathrow

Wed 19/11

10:55-12:25

Nonstop1h 30m

£94

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Wed 12/11

13:00-14:30

Nonstop1h 30m

London Heathrow

Wed 19/11

10:55-12:25

Nonstop1h 30m

£95

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Thu 20/11

13:00-14:30

Nonstop1h 30m

London Heathrow

Mon 24/11

10:55-12:25

Nonstop1h 30m

£96

CorkLondon

ORK - LHR

ORKLHR

Cork

Sat 29/11

20:10-21:25

Nonstop1h 15m

London Heathrow

Mon 1/12

22:05-23:25

Nonstop1h 20m

£96

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 19/12

19:45-21:05

Nonstop1h 20m

London Heathrow

Fri 2/1

06:30-07:55

Nonstop1h 25m

£102

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?

In general, January is the cheapest month to fly from Ireland to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £108. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from Ireland averaging around £111.

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

On average, the least expensive day to fly to London Heathrow Airport from Ireland is on a Friday. momondo users have found tickets for Friday departures for as low as £438. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Sunday is £570.

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 £357. 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 £731 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 £126 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 £90 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

£41

Fastest flight time

1h 15m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun
The best one-way flight to London Heathrow Airport from Ireland in the past 72 hours is £41. The best return flight deal from Ireland to London Heathrow Airport found on momondo in the last 72 hours is £91.
The fastest flight from Ireland to London Heathrow Airport takes 1h 15m
Direct flights go from Ireland to London Heathrow Airport on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. Airline offering direct flights is Aer Lingus..
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 are refreshed on a daily basis.

  • 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted 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
Aer LingusPriceFrom £72Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
British AirwaysPriceFrom £73Free CancellationRating
6.7
7,487 reviews
Search British Airways flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Northampton
Swindon
Canterbury
Stratford-upon-Avon
Southend-on-Sea
Ipswich
Ilford
Poole
Guildford
Swanage
Colchester
Dover
Hayes
Chelmsford

Why use momondo?

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

It is quick and easy to find Ireland to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

momondo does allow users to show only those flights to London from Ireland which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to London from Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Ireland to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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