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$41+ Cheap flights from Dublin (DUB) to Heathrow (LHR)

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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Dublin to London Heathrow are usually found in January or October, booked 73 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Dublin to Heathrow

Cheapest flights from Dublin to Heathrow
Explore the most affordable flight options available from Dublin to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This British Airways deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/213:05 pmDUB - LHR
Nonstop1h 25mBritish Airways
Wed 12/246:15 pmLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 12/10$118
This British Airways deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/213:05 pmDUB - LHR
Nonstop1h 25mBritish Airways
Mon 12/296:30 amLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 12/10$120
This British Airways deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:55 pmDUB - LHR
Nonstop1h 20mBritish Airways
Fri 1/26:30 amLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 12/11$129
This British Airways deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:40 pmDUB - LHR
Nonstop1h 20mBritish Airways
Mon 12/296:30 amLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 12/10$130
This British Airways deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:55 pmDUB - LHR
Nonstop1h 20mBritish Airways
Wed 12/246:15 pmLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 12/11$136
This British Airways deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/228:40 pmDUB - LHR
Nonstop1h 20mBritish Airways
Fri 12/266:25 pmLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 12/11$138
This British Airways deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:40 pmDUB - LHR
Nonstop1h 20mBritish Airways
Fri 12/261:20 pmLHR - DUB
Nonstop1h 30mBritish Airways
Deal found 12/11$139
This British Airways deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:35 pmDUB - LHR
Nonstop1h 20mBritish Airways
Thu 1/18:15 amLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 12/11$140
This British Airways deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:40 pmDUB - LHR
Nonstop1h 20mBritish Airways
Fri 1/26:30 amLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 12/10$141
This Expedia deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1510:45 amDUB - LHR
Nonstop1h 35mBritish Airways
Wed 12/246:15 pmLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 12/11$143

Find flight deals from Dublin to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$92
(British Airways)

One-way from

$41
(British Airways)

Popular in

August

Cheapest in

January

Average price

$182

Good round-trip deal

$181 or less

Good one-way deal

$92 or less
Provider with most accurate pricing for Dublin-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-London Heathrow flights.
Search Deals
From Dublin to London Heathrow
Search Deals
One-way flight from Dublin to London Heathrow
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Dublin to London Heathrow.
Search Deals
Price to beat on a one-way flight from Dublin to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dublin 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 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from Dublin to London Heathrow Airport that are best for you.

Fly from

Dublin

Fly to

Heathrow

Route

Depart

Return

Price

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 1/22

8:40 pm-10:00 pm

Nonstop1h 20m

London Heathrow

Sun 1/25

8:25 am-9:50 am

Nonstop1h 25m

$93

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 1/31

4:05 pm-5:30 pm

Nonstop1h 25m

London Heathrow

Sun 2/1

12:45 pm-2:15 pm

Nonstop1h 30m

$93

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 2/9

8:40 pm-10:00 pm

Nonstop1h 20m

London Heathrow

Fri 2/13

6:30 am-7:55 am

Nonstop1h 25m

$93

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 1/26

4:00 pm-5:25 pm

Nonstop1h 25m

London Heathrow

Tue 1/27

1:50 pm-3:20 pm

Nonstop1h 30m

$98

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 1/21

10:20 am-11:55 am

Nonstop1h 35m

London Heathrow

Fri 1/23

6:30 am-7:55 am

Nonstop1h 25m

$98

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 1/24

8:40 pm-10:00 pm

Nonstop1h 20m

London Heathrow

Thu 1/29

6:30 am-7:55 am

Nonstop1h 25m

$99

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 1/14

10:20 am-11:55 am

Nonstop1h 35m

London Heathrow

Thu 1/15

10:45 am-12:15 pm

Nonstop1h 30m

$103

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 2/28

8:40 pm-10:00 pm

Nonstop1h 20m

London Heathrow

Wed 3/4

3:30 pm-5:00 pm

Nonstop1h 30m

$103

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 2/25

8:40 pm-10:00 pm

Nonstop1h 20m

$41

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 2/28

8:40 pm-10:00 pm

Nonstop1h 20m

$41

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 18 results
1
2

Compare providers for flights from Dublin to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dublin to Heathrow in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Dublin-London Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Dublin-London Heathrow Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Dublin-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Dublin-London Heathrow Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Dublin-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dublin to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Dublin with our price prediction graph.
Estimated round-trip 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 Dublin to London Heathrow Airport

How far ahead should I book a flight from Dublin to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Dublin to Heathrow. Price data was last updated on December 5, 2025.

The best time to book flights from Dublin to London Heathrow Airport is 66 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of $86). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of $116). 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 DUB to LHR?

Find hourly flight availability from Dublin 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 December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Dublin to London Heathrow Airport in the evening. If you’re flexible enough to do this you can expect to save up to 67% on your trip compared to booking a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Dublin to Heathrow. Price data was last updated on December 6, 2025.

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

The best insider tips for Dublin to London Heathrow Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Dublin to London Heathrow Airport trip
Airlines
British Airways

BA's Executive Club offers free seat selection for oneworld Sapphire or Emerald members, even on economy fares.


BA's Club Suite business class offers private pods with doors, available on A350 and most 777 aircraft.

Read more about British AirwaysBy Gabriel Leigh
Aer Lingus

Aer Lingus offers Wi-Fi for purchase on most Airbus A330 aircraft, enhancing connectivity during flights.


Aer Lingus provides a complimentary hot meal on all transatlantic flights, ensuring a satisfying dining experience.

Read more about Aer LingusBy Evie Carrick
Airports
DUB

For a quick security experience at DUB, use Fast Track for a fee and prepare your liquids in a clear bag beforehand.

Read more about DUBBy James March
LHR

Take the Heathrow Express for the fastest route to central London, arriving at Paddington Station for easy onward travel.

Read more about LHRBy Ramsey Qubein
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Evie Carrick

Evie Carrick

Expert on Aer Lingus

Evie Carrick

Evie Carrick

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
James March

James March

Expert on DUB

James March

James March

For UK-based James March, nothing beats the thrill and chaos of arriving in a new city for the first time, and he tries to put that feeling into his writing and inspire others to travel too. From Birmingham to Blackpool and Leicester to Liverpool, James has reviewed hotels, written narratives and created guides for those who love to travel.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

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 December 12, 2025.
Peruse reviews from past customers who have flown with Aer Lingus and British Airways from Dublin to London Heathrow Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,392 reviews

Entertainment

6.9

Food

6.6

Boarding

7.4

Comfort

7.1

Crew

8.0

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.2
Good
1,392 reviews
Aer Lingus
7.2
Good
1,392 reviews

Entertainment

6.9

Food

6.6

Boarding

7.4

Comfort

7.1

Crew

8.0

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
British Airways
6.7
Okay
7,571 reviews
Aer Lingus
7.2
Good
1,392 reviews

Entertainment

6.9

Food

6.6

Boarding

7.4

Comfort

7.1

Crew

8.0

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

Related info for your journey

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

  • What airport do you fly from for flights from Dublin to London Heathrow?

    Most people fly from Dublin (DUB) if they book a flight from Dublin to London Heathrow. On average, Dublin has 47 outbound flights to London Heathrow per day from 2 airlines. Dublin is conveniently located just 5.7 mi from Dublin’s city center.

  • How long is the flight from Dublin to London Heathrow Airport?

    Airlines like British Airways fly from Dublin to London Heathrow Airport in about 1h 20m. The time it takes to get you to your destination is usually consistent. Airlines will cover a distance of 279 mi. All flights are typically nonstop.

  • What are the cheapest airlines flying from Dublin to London Heathrow Airport round-trip?

    British Airways, at $93, was found to be the cheapest airline from Dublin to London Heathrow Airport. An alternate airline flying to your destination would be Aer Lingus. These flights start at 43% lower than the current average price 3 months from now.

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

    Consider Air Canada (81%), British Airways (77%) or Aer Lingus (77%) when booking your flight. These represent the most reliable airlines when flying from Dublin to London Heathrow Airport.

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

    While on average a flight from Dublin to London Heathrow Airport is generally $686, our data shows the cheapest flight currently is $62. When looking at the most popular route, (Dublin - London Heathrow), you can expect to pay $111 for that flight.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of $86). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of $116). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley

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Alternative routes for Dublin to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Dublin to Gatwick flights
Cork to Heathrow flights
Shannon to Heathrow flights

Top 2 airlines flying from Dublin to Heathrow

Discover the top 2 airlines that operate flights from Dublin 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 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$96Average$155FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$123Average$190FlexibilityNo cancel feeOn-timeN/A

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