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Cheap flights from London Heathrow Airport to Ireland from €44

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Ireland departing on 22/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London Heathrow Airport to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
15:35 - 17:05LHR-DUB
1h 30mdirect
British Airways Logo
15:00 - 16:25DUB-LHR
1h 25mdirect
€74British Airways
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Tue, 6 Jan - Fri, 30 Jan
British Airways Logo
15:30 - 17:00LHR-DUB
1h 30mdirect
British Airways Logo
10:55 - 12:30DUB-LHR
1h 35mdirect
€79British Airways
Find Deal
Thu, 5 Feb - Tue, 10 Feb
British Airways Logo
15:30 - 17:00LHR-DUB
1h 30mdirect
British Airways Logo
08:50 - 10:25DUB-LHR
1h 35mdirect
€80British Airways
Find Deal
Sat, 6 Dec - Wed, 10 Dec
British Airways Logo
15:30 - 17:00LHR-DUB
1h 30mdirect
British Airways Logo
20:40 - 22:00DUB-LHR
1h 20mdirect
€80British Airways
Find Deal
Sat, 13 Dec - Thu, 18 Dec
Aer Lingus Logo
10:55 - 12:25LHR-NOC
1h 30mdirect
Aer Lingus Logo
13:00 - 14:30NOC-LHR
1h 30mdirect
€105Aer Lingus
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Tue, 2 Dec - Sat, 6 Dec
Aer Lingus Logo
10:55 - 12:25LHR-NOC
1h 30mdirect
Aer Lingus Logo
13:00 - 14:30NOC-LHR
1h 30mdirect
€106Aer Lingus
Find Deal
Tue, 2 Dec - Sat, 6 Dec
Multiple Airlines Logo
15:30 - 17:00LHR-DUB
1h 30mdirect
Multiple Airlines Logo
14:15 - 15:35DUB-LHR
1h 20mdirect
€119Multiple Airlines
Find Deal
Sat, 6 Dec - Mon, 8 Dec
Multiple Airlines Logo
10:55 - 12:25LHR-NOC
1h 30mdirect
Multiple Airlines Logo
16:20 - 09:10NOC-LHR
16h 50m2 stops
€153Multiple Airlines
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Thu, 27 Nov - Mon, 1 Dec
KLM Logo
17:50 - 23:25LHR-ORK
5h 35m1 stop
KLM Logo
06:00 - 10:45ORK-LHR
4h 45m1 stop
€164KLM
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Fri, 5 Dec - Sun, 7 Dec
KLM Logo
17:50 - 23:25LHR-ORK
5h 35m1 stop
KLM Logo
06:00 - 10:45ORK-LHR
4h 45m1 stop
€169KLM
Find Deal
Fri, 21 Nov - Tue, 25 Nov

British Airways flights from London Heathrow Airport to Ireland

Our best British Airways deals on London Heathrow Airport to Ireland flight tickets
British Airways
6 Jan
LHR15:35London Heathrow
1h 30m
DUB17:05Dublin
30 Jan
DUB15:00Dublin
1h 25m
LHR16:25London Heathrow
€74
Find similar
British Airways
5 Feb
LHR15:30London Heathrow
1h 30m
DUB17:00Dublin
10 Feb
DUB10:55Dublin
1h 35m
LHR12:30London Heathrow
€79
Find similar
British Airways
6 Dec
LHR15:30London Heathrow
1h 30m
DUB17:00Dublin
8 Dec
DUB08:50Dublin
1h 35m
LHR10:25London Heathrow
€80
Find similar

Aer Lingus flights from London Heathrow Airport to Ireland

Our best Aer Lingus deals on London Heathrow Airport to Ireland flight tickets
Aer Lingus
15 Nov
LHR10:55London Heathrow
1h 30m
NOC12:25Knock Intl
22 Nov
NOC13:00Knock Intl
1h 30m
LHR14:30London Heathrow
€100
Find similar
Aer Lingus
2 Dec
LHR10:55London Heathrow
1h 30m
NOC12:25Knock Intl
6 Dec
NOC13:00Knock Intl
1h 30m
LHR14:30London Heathrow
€105
Find similar
Aer Lingus
2 Dec
LHR10:55London Heathrow
1h 30m
NOC12:25Knock Intl
6 Dec
NOC13:00Knock Intl
1h 30m
LHR14:30London Heathrow
€106
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Ireland 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 8 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 6/1

15:35-17:05

Nonstop1h 30m

Dublin

Fri 30/1

15:00-16:25

Nonstop1h 25m

€74

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 5/2

15:30-17:00

Nonstop1h 30m

Dublin

Tue 10/2

10:55-12:30

Nonstop1h 35m

€79

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 6/12

15:30-17:00

Nonstop1h 30m

Dublin

Wed 10/12

08:50-10:25

Nonstop1h 35m

€80

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 13/12

15:30-17:00

Nonstop1h 30m

Dublin

Thu 18/12

20:40-22:00

Nonstop1h 20m

€80

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Tue 2/12

10:55-12:25

Nonstop1h 30m

Knock Intl

Sat 6/12

13:00-14:30

Nonstop1h 30m

€105

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Tue 2/12

10:55-12:25

Nonstop1h 30m

Knock Intl

Sat 6/12

13:00-14:30

Nonstop1h 30m

€106

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 6/12

15:30-17:00

Nonstop1h 30m

Dublin

Mon 8/12

14:15-15:35

Nonstop1h 20m

€119

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Thu 27/11

10:55-12:25

Nonstop1h 30m

Knock Intl

Mon 1/12

16:20-09:10

2 stops16h 50m

€153

LondonCork

LHR - ORK

LHRORK

London Heathrow

Fri 5/12

17:50-23:25

1 stop5h 35m

Cork

Sun 7/12

06:00-10:45

1 stop4h 45m

€164

LondonCork

LHR - ORK

LHRORK

London Heathrow

Fri 21/11

17:50-23:25

1 stop5h 35m

Cork

Tue 25/11

06:00-10:45

1 stop4h 45m

€169

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ireland from

How to get the cheapest flight ticket from London Heathrow Airport to Ireland

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 Ireland?

The month of February is another great option to travel to Ireland, with average flight prices from London Heathrow Airport averaging around €130.

What is the cheapest day to depart on your flight to Ireland?

The cheapest day to depart on your flight to Ireland is on a Monday when prices can be found for as low as €147. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around €194. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ireland.

What is the cheapest time of day to depart on your flight to Ireland?

In the afternoon is the cheapest time of day to fly from London Heathrow Airport to Ireland when you can find flight prices for as low as €145. Flying to Ireland in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Ireland is at midday when prices are around €290.

What is the cheapest London Heathrow to Ireland flight route?

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

How far in advance should I book a flight to Ireland?

You are more likely to see cheaper flights to Ireland from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €147 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from London Heathrow Airport for as low as €111 on momondo.

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

There are 2 cabin classes available to choose from on London Heathrow to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap London Heathrow Airport to Ireland flight deals and tips

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

Best price found

€55

Fastest flight time

1h 10m

Direct flights

Every day

Airports in Ireland

3 airports
The best one-way flight to Ireland from London Heathrow Airport in the past 72 hours is €55. The best return flight deal from London Heathrow Airport to Ireland found on momondo in the last 72 hours is €169.
The fastest flight from London Heathrow Airport to Ireland takes 1h 10m
Direct flights go from London Heathrow Airport to Ireland every day.
There are 3 airports near Ireland: Dublin (DUB), Shannon (SNN), Cork (ORK)
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  • When did momondo last update prices for flights from London Heathrow Airport to Ireland?

    Prices for flights from London Heathrow Airport to Ireland are refreshed on a daily basis.

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

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

    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 stopovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The necessary travel and health documents for your Ireland trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from London Heathrow Airport to Ireland

Compare and see reviews for airlines that fly from London Heathrow Airport to Ireland with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom €79Free CancellationRating
7.2
1,366 reviews
Search Aer Lingus flights
British AirwaysPriceFrom €95Free CancellationRating
6.7
7,505 reviews
Search British Airways flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Ireland for you.

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

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

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

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 London to Ireland.

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

Price alerts on flights to Ireland from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to Ireland

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom €39
Flights to Corkfrom €110
Flights to Shannon, Clarefrom €113
Flights to Donegalfrom €80
Flights to Milltown (Kerry)from €39