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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 21/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DUB
30 Mar — 6 Apr1
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 25 March 2025.

Round-trip from

£56

One-way from

£44

Popular in

December

Cheapest in

January

Average price

£68

Good round-trip deal

£104 or less

Good one-way deal

£77 or less
British Airways
  • British Airways
  • 6/5-9/12
  • Nonstop
  • 2h 50m total
  • London to Ireland
Search Deals
British Airways
  • British Airways
  • 21/5
  • Nonstop
  • 1h 25m total
  • London to Ireland
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£2 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from London Heathrow to Ireland.
Search Deals
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 25 March 2025.

Tue 6/506:20LHR - DUB
Nonstop1h 25mBritish Airways
Tue 9/1213:20DUB - LHR
Nonstop1h 25mBritish Airways
Deal found 25/3£56
Wed 7/514:40LHR - SNN
Nonstop1h 30mAer Lingus
Tue 27/521:15SNN - LHR
Nonstop1h 25mAer Lingus
Deal found 24/3£77
Tue 22/411:05LHR - NOC
Nonstop1h 30mAer Lingus
Tue 29/413:05NOC - LHR
Nonstop1h 25mAer Lingus
Deal found 24/3£87
Wed 14/522:25LHR - ORK
Nonstop1h 20mAer Lingus
Tue 20/520:30ORK - LHR
Nonstop1h 15mAer Lingus
Deal found 24/3£94
Sat 10/519:40LHR - DUB
Nonstop1h 10mAer Lingus
Mon 12/508:50DUB - LHR
Nonstop1h 30mAer Lingus
Deal found 24/3£104
Mon 31/318:50LHR - DUB
1 stop5h 25mMultiple Airlines
Thu 3/410:40DUB - LHR
Nonstop1h 30mMultiple Airlines
Deal found 24/3£117
Mon 12/506:15LHR - SNN
1 stop6h 20mMultiple Airlines
Mon 19/521:15SNN - LHR
Nonstop1h 25mMultiple Airlines
Deal found 24/3£129
Wed 30/406:55LHR - ORK
1 stop17h 30mMultiple Airlines
Wed 7/520:30ORK - LHR
Nonstop1h 15mMultiple Airlines
Deal found 24/3£131
Sat 19/408:15LHR - CFN
1 stop11h 45mMultiple Airlines
Wed 23/414:30CFN - LHR
1 stop4h 45mMultiple Airlines
Deal found 24/3£140
Wed 7/506:40LHR - DUB
1 stop5h 10mScandinavian Airlines
Thu 8/512:40DUB - LHR
1 stop5h 00mScandinavian Airlines
Deal found 24/3£154
Fri 19/917:10LHR - DUB
1 stop5h 15mKLM
Sun 21/905:55DUB - LHR
1 stop4h 50mKLM
Deal found 24/3£158
Thu 11/906:20LHR - KIR
1 stop4h 40mMultiple Airlines
Sun 14/911:40KIR - LHR
1 stop10h 05mMultiple Airlines
Deal found 24/3£162

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 25 March 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

Tue 6/5

06:20-07:45

Nonstop1h 25m

Dublin

Tue 9/12

13:20-14:45

Nonstop1h 25m

£56

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Wed 7/5

14:40-16:10

Nonstop1h 30m

Shannon

Tue 27/5

21:15-22:40

Nonstop1h 25m

£77

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 9/5

20:10-21:30

Nonstop1h 20m

Dublin

Fri 16/5

20:15-21:35

Nonstop1h 20m

£81

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Tue 22/4

11:05-12:35

Nonstop1h 30m

Knock Intl

Tue 29/4

13:05-14:30

Nonstop1h 25m

£87

LondonCork

LHR - ORK

LHRORK

London Heathrow

Wed 14/5

22:25-23:45

Nonstop1h 20m

Cork

Tue 20/5

20:30-21:45

Nonstop1h 15m

£94

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Wed 30/4

15:50-17:15

Nonstop1h 25m

Dublin

Sun 4/5

19:00-20:20

Nonstop1h 20m

£104

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Mon 12/5

06:15-12:35

1 stop6h 20m

Shannon

Mon 19/5

21:15-22:40

Nonstop1h 25m

£129

LondonCork

LHR - ORK

LHRORK

London Heathrow

Wed 30/4

06:55-00:25

1 stop17h 30m

Cork

Wed 7/5

20:30-21:45

Nonstop1h 15m

£131

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Tue 22/4

06:55-10:45

1 stop3h 50m

Knock Intl

Fri 25/4

13:05-14:30

Nonstop1h 25m

£137

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 19/4

08:15-20:00

1 stop11h 45m

Donegal

Wed 23/4

14:30-19:15

1 stop4h 45m

£140

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 49 results
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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 June is currently the most expensive (average of £100). 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 25 March 2025.

It’s typically best to fly out from London Heathrow Airport to Ireland in the evening. Doing so could potentially save you 77% 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 Tuesday evenings when fares are most often at their lowest. Monday mornings 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 25 March 2025.

The most flights from LHR to IE0 are scheduled on a Monday (61 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (40 on average).

Rainfall in Ireland by month

Plan your trip to Ireland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ireland ranges from 49.0 - 79.0 inches per month. October is typically the wettest month, when rainfall can reach 79.0 mm. February is typically the driest time to visit Ireland when rainfall is around 49.0 mm.

Temperature in Ireland by month

Plan your trip to Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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 25 March 2025.
Read through reviews of airlines operating flights from London to Ireland, such as Aegean Airlines, KLM and Austrian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Crew

8.6

Overall

8.1

Food

7.3

Boarding

7.8

Comfort

7.8

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Aegean Airlines
8.1
Very Good
729 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Crew

8.6

Overall

8.1

Food

7.3

Boarding

7.8

Comfort

7.8

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
KLM
7.8
Good
1,318 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Crew

8.6

Overall

8.1

Food

7.3

Boarding

7.8

Comfort

7.8

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Austrian Airlines
7.5
Good
769 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Crew

8.6

Overall

8.1

Food

7.3

Boarding

7.8

Comfort

7.8

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
SWISS
7.5
Good
1,569 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Crew

8.6

Overall

8.1

Food

7.3

Boarding

7.8

Comfort

7.8

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Air France
7.4
Good
1,423 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Crew

8.6

Overall

8.1

Food

7.3

Boarding

7.8

Comfort

7.8

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you

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 £49 and Vueling from £71 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 Kenya Airways (94%), Japan Airlines (90%) or LATAM Airlines (89%) 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 £1,210, our data indicates the cheapest price to be £79. The most popular route (London Heathrow - Dublin), is priced around £67.

  • 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 June is currently the most expensive (average of £100). 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

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Alternative routes for Heathrow to Ireland

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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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£27Average£50FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£64Average£180FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£81Average£163FlexibilityNo 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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