What is the cheapest airline that flies from London Heathrow to Ireland?

British Airways, Aer Lingus, and Vueling are the most popular carriers operating from London Heathrow to Ireland

How many flights depart from London Heathrow Airport to Ireland on average per week?

346 flights are operational weekly from London Heathrow Airport to Ireland as of October 2025. The most popular departure day for this route is Thu, with 31% of flights per week taking off on this day.

How many flights depart from London Heathrow Airport to Ireland on average per day?

As of October 2025, 49 flights take off from London Heathrow Airport and land in Ireland each day. The most common flight departure time for this route is 09:00, with 37% of daily flights taking off in the afternoon.

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?

As of October 2025, there are 2 operators available to choose from 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.

€49 Cheap Flights from London Heathrow Airport to Ireland in 2025/26

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Find the cheapest flights from London Heathrow Airport to Ireland

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Cheap return flights

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08:35 - 10:00LHR-DUB

1h 25mdirect

20:40 - 22:00DUB-LHR

1h 20mdirect

€74British Airways

Find Deal

Sat, 17 Jan - Sat, 24 Jan

06:30 - 07:55LHR-DUB

1h 25mdirect

10:55 - 12:30DUB-LHR

1h 35mdirect

€76British Airways

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Sat, 22 Nov - Tue, 25 Nov

15:30 - 17:00LHR-DUB

1h 30mdirect

20:40 - 22:00DUB-LHR

1h 20mdirect

€78British Airways

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Sat, 22 Nov - Sat, 29 Nov

15:35 - 17:05LHR-DUB

1h 30mdirect

13:10 - 14:35DUB-LHR

1h 25mdirect

€79British Airways

Find Deal

Tue, 9 Dec - Sat, 13 Dec

15:15 - 16:45LHR-SNN

1h 30mdirect

20:05 - 21:25SNN-LHR

1h 20mdirect

€104Aer Lingus

Find Deal

Thu, 20 Nov - Thu, 27 Nov

10:55 - 12:25LHR-NOC

1h 30mdirect

13:00 - 14:30NOC-LHR

1h 30mdirect

€108Aer Lingus

Find Deal

Thu, 6 Nov - Tue, 11 Nov

22:05 - 23:25LHR-ORK

1h 20mdirect

16:05 - 17:20ORK-LHR

1h 15mdirect

€117Multiple Airlines

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Mon, 8 Dec - Thu, 18 Dec

06:30 - 07:55LHR-DUB

1h 25mdirect

06:40 - 08:05DUB-LHR

1h 25mdirect

€118Multiple Airlines

Find Deal

Sat, 6 Dec - Sun, 7 Dec

06:30 - 10:45LHR-ORK

4h 15m1 stop

06:00 - 10:45ORK-LHR

4h 45m1 stop

€171KLM

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Fri, 14 Nov - Sun, 16 Nov

17:50 - 23:25LHR-ORK

5h 35m1 stop

11:15 - 19:15ORK-LHR

8h 00m1 stop

€172KLM

Find Deal

Fri, 28 Nov - Mon, 1 Dec

British Airways flights from London Heathrow Airport to Ireland

Our best British Airways deals on London Heathrow Airport to Ireland flight tickets

British Airways

17 Jan

LHR08:35London Heathrow

1h 25m

DUB10:00Dublin

24 Jan

DUB20:40Dublin

1h 20m

LHR22:00London Heathrow

€74

Find similar

British Airways

22 Nov

LHR06:30London Heathrow

1h 25m

DUB07:55Dublin

25 Nov

DUB10:55Dublin

1h 35m

LHR12:30London Heathrow

€76

Find similar

British Airways

22 Nov

LHR15:30London Heathrow

1h 30m

DUB17:00Dublin

29 Nov

DUB20:40Dublin

1h 20m

LHR22:00London Heathrow

€78

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

20 Nov

LHR15:15London Heathrow

1h 30m

SNN16:45Shannon

27 Nov

SNN20:05Shannon

1h 20m

LHR21:25London Heathrow

€104

Find similar

Aer Lingus

6 Nov

LHR10:55London Heathrow

1h 30m

NOC12:25Knock Intl

11 Nov

NOC13:00Knock Intl

1h 30m

LHR14:30London Heathrow

€108

Find similar

Aer Lingus

17 Nov

LHR10:00London Heathrow

1h 30m

SNN11:30Shannon

20 Nov

SNN20:05Shannon

1h 20m

LHR21:25London Heathrow

€109

Find similar

momondo Fare Finder

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

Sat 17/1

08:35-10:00

Nonstop1h 25m

Dublin

Sat 24/1

20:40-22:00

Nonstop1h 20m

€74

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 22/11

06:30-07:55

Nonstop1h 25m

Dublin

Tue 25/11

10:55-12:30

Nonstop1h 35m

€76

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 22/11

15:30-17:00

Nonstop1h 30m

Dublin

Sat 29/11

20:40-22:00

Nonstop1h 20m

€78

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 9/12

15:35-17:05

Nonstop1h 30m

Dublin

Sat 13/12

13:10-14:35

Nonstop1h 25m

€79

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Thu 20/11

15:15-16:45

Nonstop1h 30m

Shannon

Thu 27/11

20:05-21:25

Nonstop1h 20m

€104

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Thu 6/11

10:55-12:25

Nonstop1h 30m

Knock Intl

Tue 11/11

13:00-14:30

Nonstop1h 30m

€108

LondonCork

LHR - ORK

LHRORK

London Heathrow

Mon 8/12

22:05-23:25

Nonstop1h 20m

Cork

Thu 18/12

16:05-17:20

Nonstop1h 15m

€117

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 6/12

06:30-07:55

Nonstop1h 25m

Dublin

Sun 7/12

06:40-08:05

Nonstop1h 25m

€118

LondonCork

LHR - ORK

LHRORK

London Heathrow

Fri 14/11

06:30-10:45

1 stop4h 15m

Cork

Sun 16/11

06:00-10:45

1 stop4h 45m

€171

LondonCork

LHR - ORK

LHRORK

London Heathrow

Fri 28/11

17:50-23:25

1 stop5h 35m

Cork

Mon 1/12

11:15-19:15

1 stop8h 00m

€172

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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 €125. 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 €193. 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 €289.

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 €109 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	€90
Fastest flight time	1h 20m
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 €90. The best return flight deal from London Heathrow Airport to Ireland found on momondo in the last 72 hours is €286.

The fastest flight from London Heathrow Airport to Ireland takes 1h 20m

Direct flights go from London Heathrow Airport to Ireland every day.

There are 3 airports near Ireland: Dublin (DUB), Shannon (SNN), Cork (ORK)

Search flight deals

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?
As of October 2025, there are 2 operators available to choose from 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?
Based on momondo bookings for flights between London Heathrow Airport and Ireland, the leading plane model is Boeing 787-9 Dreamliner, making up 13.18% of the total bookings. Other popular models include Boeing 777 with 10.19%, Airbus A320neo with 9.37%, and Airbus A350-1000 with 8.39%.

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 Lingus	PriceFrom €79	Free Cancellation	Rating 7.2 1,352 reviews		Search Aer Lingus flights
British Airways	PriceFrom €95	Free Cancellation	Rating 6.7 7,468 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.

An easier way to manage your Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Find better results for your trip to Ireland

Popular Cities in Ireland

Flights to Dublinfrom €39

Flights to Corkfrom €114

Flights to Shannon, Clarefrom €111

Flights to Donegalfrom €73

Flights to Milltown (Kerry)from €40

Cheap flights from London Heathrow Airport to Ireland from €49

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

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Find the cheapest flights from London Heathrow Airport to Ireland

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

British Airways flights from London Heathrow Airport to Ireland

Our best British Airways deals on London Heathrow Airport to Ireland flight tickets

Aer Lingus flights from London Heathrow Airport to Ireland

Our best Aer Lingus deals on London Heathrow Airport to Ireland flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Ireland that are best for you.

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?

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

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?

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.

What is the cheapest airline that flies from London Heathrow to Ireland?

British Airways, Aer Lingus, and Vueling are the most popular carriers operating from London Heathrow to Ireland

How many flights depart from London Heathrow Airport to Ireland on average per day?

As of October 2025, 49 flights take off from London Heathrow Airport and land in Ireland each day. The most common flight departure time for this route is 09:00, with 37% of daily flights taking off in the afternoon.

How many flights depart from London Heathrow Airport to Ireland on average per week?

346 flights are operational weekly from London Heathrow Airport to Ireland as of October 2025. The most popular departure day for this route is Thu, with 31% of flights per week taking off on this day.

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

Fastest flight time

Direct flights

Airports in Ireland

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

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?

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

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

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ireland

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo