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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 Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DUB
16 Jul — 23 Jul1
1 adult

Cheap flight deals from Heathrow to Ireland

Keep the following information in mind while searching for Heathrow to Ireland flight deals. Data was last updated 11 July 2025.

Round-trip from

£73

One-way from

£44

Popular in

December

Cheapest in

September

Average price

£63

Good round-trip deal

£126 or less

Good one-way deal

£69 or less
British Airways
  • British Airways
  • 4/1-15/1
  • Nonstop
  • 3h 10m total
  • London to Ireland
Search Deals
British Airways
  • British Airways
  • 7/10
  • Nonstop
  • 1h 25m total
  • London to Ireland
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£5 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from London Heathrow to Ireland.
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Price to beat on a one-way flight from London Heathrow to Ireland.
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Find flight deals from Heathrow to Ireland

Cheapest flights from Heathrow to Ireland
Explore the most affordable flight options available from Heathrow to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Thu 11/916:30LHR - DUB
Nonstop1h 30mBritish Airways
Thu 18/911:00DUB - LHR
Nonstop1h 30mBritish Airways
Deal found 11/7£74
Wed 3/911:05LHR - NOC
Nonstop1h 30mAer Lingus
Mon 8/913:05NOC - LHR
Nonstop1h 25mAer Lingus
Deal found 10/7£96
Tue 29/719:10LHR - SNN
Nonstop1h 25mAer Lingus
Wed 30/721:15SNN - LHR
Nonstop1h 25mAer Lingus
Deal found 11/7£96
Thu 28/806:20LHR - DUB
Nonstop1h 25mMultiple Airlines
Sun 31/807:30DUB - LHR
Nonstop1h 35mMultiple Airlines
Deal found 9/7£110
Sat 2/822:25LHR - ORK
Nonstop1h 20mAer Lingus
Thu 7/820:30ORK - LHR
Nonstop1h 15mAer Lingus
Deal found 10/7£124
Wed 23/720:40LHR - ORK
1 stop3h 45mMultiple Airlines
Sat 26/720:30ORK - LHR
Nonstop1h 15mMultiple Airlines
Deal found 9/7£141
Wed 8/1006:55LHR - SNN
1 stop7h 00mMultiple Airlines
Sun 12/1007:40SNN - LHR
Nonstop1h 25mMultiple Airlines
Deal found 9/7£141
Tue 2/911:05LHR - NOC
Nonstop1h 30mMultiple Airlines
Sun 7/909:10NOC - LHR
1 stop9h 55mMultiple Airlines
Deal found 11/7£144
Sat 30/808:50LHR - KIR
1 stop8h 20mMultiple Airlines
Tue 2/911:25KIR - LHR
1 stop7h 30mMultiple Airlines
Deal found 11/7£181
Thu 14/807:40LHR - CFN
1 stop12h 20mAer Lingus
Wed 20/807:55CFN - LHR
1 stop8h 00mAer Lingus
Deal found 9/7£205
Tue 23/906:50LHR - CFN
2 stops7h 10mMultiple Airlines
Sun 28/913:20CFN - LHR
1 stop7h 00mMultiple Airlines
Deal found 11/7£265

Cheapflights Fare Finder

Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Ireland that are best for you.

Fly from

Heathrow

Fly to

Ireland

Route

Depart

Return

Price

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sun 4/1

13:25-15:00

Nonstop1h 35m

Dublin

Thu 15/1

08:50-10:25

Nonstop1h 35m

£73

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Wed 3/9

11:05-12:35

Nonstop1h 30m

Knock Intl

Mon 8/9

13:05-14:30

Nonstop1h 25m

£96

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Tue 29/7

19:10-20:35

Nonstop1h 25m

Shannon

Wed 30/7

21:15-22:40

Nonstop1h 25m

£96

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 28/8

06:20-07:45

Nonstop1h 25m

Dublin

Sun 31/8

07:30-09:05

Nonstop1h 35m

£110

LondonCork

LHR - ORK

LHRORK

London Heathrow

Sat 2/8

22:25-23:45

Nonstop1h 20m

Cork

Thu 7/8

20:30-21:45

Nonstop1h 15m

£124

LondonCork

LHR - ORK

LHRORK

London Heathrow

Wed 23/7

20:40-00:25

1 stop3h 45m

Cork

Sat 26/7

20:30-21:45

Nonstop1h 15m

£141

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Wed 8/10

06:55-13:55

1 stop7h 00m

Shannon

Sun 12/10

07:40-09:05

Nonstop1h 25m

£141

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Tue 2/9

11:05-12:35

Nonstop1h 30m

Knock Intl

Sun 7/9

09:10-19:05

1 stop9h 55m

£144

LondonMilltown (Kerry)

LHR - KIR

LHRKIR

London Heathrow

Sat 30/8

08:50-17:10

1 stop8h 20m

Milltown (Kerry) Kerry

Tue 2/9

11:25-18:55

1 stop7h 30m

£181

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 14/8

07:40-20:00

1 stop12h 20m

Donegal

Wed 20/8

07:55-15:55

1 stop8h 00m

£205

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Showing 1-10 of 26 results
1
2
3

Best time to book a flight from Heathrow to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Ireland

What is the cheapest month to book a flight from London Heathrow Airport to Ireland?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Ireland (average of £71). Flying from London Heathrow Airport to Ireland in August is currently the most expensive (average of £93). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to IE?

Find hourly flight availability from Heathrow to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

It’s typically best to fly out from London Heathrow Airport to Ireland in the afternoon. Doing so could potentially save you 73% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from London Heathrow Airport to Ireland?

Use this chart to determine the cheapest time to fly return from Heathrow to Ireland. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to Ireland flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London Heathrow Airport to Ireland

Explore weekly flight availability from Heathrow to Ireland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 11 July 2025.

The most flights from LHR to IE0 are scheduled on a Friday (72 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (33 on average).

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ireland. Reviews last updated 11 July 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Ireland, such as KLM, Vueling, andAer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,372 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Vueling
7.1
Good
1,171 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Aer Lingus
7.1
Good
1,154 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
British Airways
6.6
Okay
7,109 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from London Heathrow Airport to Ireland one-way?

    One-way options have recently been found by users for as low as £44 on British Airways. Other airlines that offer cheap prices include Aer Lingus from £46 and Vueling from £68 one-way.

  • What are the most popular routes from London Heathrow Airport to Ireland?

    The most popular flight routes from London Heathrow Airport to Ireland are London Heathrow - Dublin, London Heathrow - Cork and London Heathrow - Shannon.

  • What are the most reliable airlines from London Heathrow Airport to Ireland?

    No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to Ireland consider choosing Air Canada (100%), Aer Lingus (92%) or British Airways (92%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from London Heathrow Airport to Ireland?

    Looking for the cheapest flight from London Heathrow Airport to Ireland? While on average our users pay £967, our data indicates the cheapest price to be £79. The most popular route (London Heathrow - Dublin), is priced around £73.

  • Can I find deals for flights from Heathrow to Ireland that include hotel bookings?

    Yes. In addition to deals on Heathrow to Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Ireland.

  • Can I find deals for business class flights from Heathrow to Ireland?

    Yes. Cheapflights offers flight deals from Heathrow to Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Ireland?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Ireland (average of £71). Flying from London Heathrow Airport to Ireland in August is currently the most expensive (average of £93). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Heathrow to Ireland

Discover the top 3 airlines that operate flights from Heathrow to Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£22Average£52FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£63Average£170FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£77Average£158FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Ireland?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Ireland. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Ireland?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Ireland.

Can Cheapflights find flights from Heathrow to Ireland with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Ireland, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Heathrow to Ireland become cheaper?

Yes! Start tracking prices for Heathrow to Ireland flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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