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Cheap flights from Ireland to London Heathrow Airport from £28

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 25/3. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
24 Dec — 31 Dec1
1 adult

Cheap flight deals from Ireland to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Ireland (IE0) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 19 December 2024.

Round-trip from

£69

One-way from

£28
British Airways
  • British Airways
  • 25/1-28/1
  • Nonstop
  • 2h 45m total
  • Ireland to London
Search Deals
British Airways
  • British Airways
  • 25/3
  • Nonstop
  • 1h 20m total
  • Ireland to London
Search Deals

Find flight deals from Ireland to Heathrow

Cheapest flights from Ireland to Heathrow
Explore the most affordable flight options available from Ireland to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 December 2024.

Sat 21/1217:50DUB - LHR
Nonstop1h 20mBritish Airways
Wed 1/106:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 18/12£118
Tue 24/1207:40DUB - LHR
Nonstop1h 25mMultiple Airlines
Tue 31/1218:15LHR - DUB
Nonstop1h 20mMultiple Airlines
Deal found 18/12£126
Tue 24/1207:40ORK - LHR
Nonstop1h 20mAer Lingus
Sat 28/1222:05LHR - ORK
Nonstop1h 20mAer Lingus
Deal found 18/12£134
Sat 21/1219:45DUB - LHR
Nonstop1h 20mAer Lingus
Thu 2/107:50LHR - DUB
Nonstop1h 20mAer Lingus
Deal found 17/12£135
Tue 24/1213:00NOC - LHR
Nonstop1h 30mAer Lingus
Thu 26/1211:00LHR - NOC
Nonstop1h 30mAer Lingus
Deal found 18/12£137
Fri 20/1208:55DUB - LHR
1 stop7h 40mAir France
Mon 23/1217:35LHR - DUB
1 stop5h 00mAir France
Deal found 18/12£160
Tue 31/1217:35ORK - LHR
Nonstop1h 15mBritish Airways
Wed 1/119:35LHR - ORK
Nonstop1h 25mBritish Airways
Deal found 18/12£170
Mon 23/1205:55DUB - LHR
1 stop4h 50mKLM
Thu 26/1211:45LHR - DUB
1 stop4h 55mKLM
Deal found 18/12£191
Sun 22/1220:05SNN - LHR
Nonstop1h 20mBritish Airways
Thu 26/1215:20LHR - SNN
Nonstop1h 25mBritish Airways
Deal found 17/12£202
Mon 23/1217:30SNN - LHR
Nonstop1h 25mAer Lingus
Fri 27/1215:20LHR - SNN
Nonstop1h 25mAer Lingus
Deal found 17/12£226
Sat 21/1210:20DUB - LHR
1 stop5h 40mScandinavian Airlines
Sat 4/110:20LHR - DUB
1 stop23h 00mScandinavian Airlines
Deal found 18/12£252
Tue 24/1206:10ORK - LHR
1 stop8h 25mMultiple Airlines
Sat 28/1222:05LHR - ORK
Nonstop1h 20mMultiple Airlines
Deal found 18/12£259

Find flights from Ireland to Heathrow within your budget

Customise your flight search to find flights from Ireland to Heathrow 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 19 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 25/1

20:35-21:55

Nonstop1h 20m

London Heathrow

Tue 28/1

06:30-07:55

Nonstop1h 25m

£69

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Mon 6/1

20:05-21:25

Nonstop1h 20m

London Heathrow

Thu 23/1

15:20-16:45

Nonstop1h 25m

£84

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Thu 9/1

13:00-14:30

Nonstop1h 30m

London Heathrow

Sun 12/1

11:00-12:30

Nonstop1h 30m

£90

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 11/1

19:45-21:05

Nonstop1h 20m

London Heathrow

Sat 18/1

17:45-19:05

Nonstop1h 20m

£90

CorkLondon

ORK - LHR

ORKLHR

Cork

Sat 1/2

20:10-21:25

Nonstop1h 15m

London Heathrow

Sat 8/2

18:05-19:30

Nonstop1h 25m

£92

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 16/1

19:45-21:05

Nonstop1h 20m

London Heathrow

Thu 23/1

06:30-07:55

Nonstop1h 25m

£97

CorkLondon

ORK - LHR

ORKLHR

Cork

Mon 27/1

13:15-20:05

1 stop6h 50m

London Heathrow

Tue 28/1

22:05-23:25

Nonstop1h 20m

£121

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Mon 6/1

20:05-21:25

Nonstop1h 20m

London Heathrow

Thu 23/1

06:50-14:45

1 stop7h 55m

£134

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 15/1

06:00-13:45

1 stop7h 45m

London Heathrow

Wed 22/1

14:45-22:50

1 stop8h 05m

£142

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 16/1

13:25-20:50

1 stop7h 25m

London Heathrow

Thu 23/1

08:40-12:40

1 stop4h 00m

£143

Flights are sorted by cheapest return flights first.

Deals found on 19/12

Showing 1-10 of 46 results
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Best time to book a flight from Ireland to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ireland 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.

Travel insights for flights from Ireland to Heathrow

Get recent, data-driven insights about flights from Ireland to Heathrow including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Ireland to London Heathrow Airport (average of £112). Flying from Ireland to London Heathrow Airport in July is currently the most expensive (average of £160). 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 IE to LHR?

Find hourly flight availability from Ireland to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 December 2024.

When flying from Ireland to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Ireland to London Heathrow Airport

Explore weekly flight availability from Ireland to Heathrow. 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 19 December 2024.

The most flights from IE0 to LHR are scheduled on a Wednesday (63 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (37 on average).

Rainfall in Heathrow by month

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

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

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

If weather is an important factor for your trip to London Heathrow Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 19 December 2024.
Get a feel of what it's like to fly with British Airways, Aer Lingus and KLM from Ireland to London by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,349 reviews
Check prices

Food

7.3

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

KLM
7.8
Good
1,349 reviews
KLM
7.8
Good
1,349 reviews
Check prices

Food

7.3

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

LOT
7.6
Good
1,129 reviews
KLM
7.8
Good
1,349 reviews
Check prices

Food

7.3

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

SWISS
7.6
Good
1,605 reviews
KLM
7.8
Good
1,349 reviews
Check prices

Food

7.3

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Austrian Airlines
7.6
Good
788 reviews
KLM
7.8
Good
1,349 reviews
Check prices

Food

7.3

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Air France
7.4
Good
1,505 reviews
KLM
7.8
Good
1,349 reviews
Check prices

Food

7.3

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Related info for your journey

Find useful and relevant information for your journey from Ireland to Heathrow. 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 Ireland to London Heathrow Airport one-way?

    The cheapet airlines for a one-way flight from Ireland to London Heathrow Airport are British Airways (£28), Aer Lingus (£42), and Iberia (£58).

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

    Most travelers choose Dublin - London Heathrow, Cork - London Heathrow or Shannon - London Heathrow when deciding on the best route from Ireland to London Heathrow Airport.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ireland to London Heathrow Airport on time: Qatar Airways (65%), Aer Lingus (64%), British Airways (64%).

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

    On average you can expect to pay £1,262 for a flight from Ireland to London Heathrow Airport. The cheapest flight overall is £28 while the most popular route, (Dublin - London Heathrow) is currently priced at £68.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ireland to Heathrow 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 Ireland to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Ireland to London Heathrow Airport (average of £112). Flying from Ireland to London Heathrow Airport in July is currently the most expensive (average of £160). 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 Ireland to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Ireland to Heathrow

Discover the top 2 airlines that operate flights from Ireland to Heathrow. 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 19 December 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£58Average£129FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£80Average£131FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Ireland to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Ireland.

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

Need flexible booking options for your flight to Heathrow from Ireland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Of course! You can now track prices for flights from Ireland to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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