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$45+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Dublin to London Heathrow are usually found in January or February, booked 48 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap 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 September 11, 2025.

Round-trip from

$102
(Mytrip)

One-way from

$45
(Mytrip)

Popular in

August

Cheapest in

January

Average price

$146

Good round-trip deal

$182 or less

Good one-way deal

$87 or less
From Dublin to London Heathrow
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One-way flight from Dublin to London Heathrow
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Highest demand for flights based on searches. 5% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Dublin to London Heathrow.
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Price to beat on a one-way flight from Dublin to London Heathrow.
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Find 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 September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1010:20 amDUB - LHR
Nonstop1h 35mBritish Airways
Sat 12/136:30 amLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 9/10$102
This British Airways deal was found by Cheapflights users on 9/11. 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 11/510:20 amDUB - LHR
Nonstop1h 35mBritish Airways
Sat 11/88:35 amLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 9/11$104
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/47:00 pmDUB - LHR
Nonstop1h 20mAer Lingus
Tue 10/143:50 pmLHR - DUB
Nonstop1h 25mAer Lingus
Deal found 9/9$105
This British Airways deal was found by Cheapflights users on 9/9. 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 11/143:00 pmDUB - LHR
Nonstop1h 25mBritish Airways
Fri 11/283:55 pmLHR - DUB
Nonstop1h 30mBritish Airways
Deal found 9/9$106
This British Airways deal was found by Cheapflights users on 9/9. 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 11/143:00 pmDUB - LHR
Nonstop1h 25mBritish Airways
Mon 11/178:25 amLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 9/9$107
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/47:00 pmDUB - LHR
Nonstop1h 20mAer Lingus
Sat 10/257:40 pmLHR - DUB
Nonstop1h 10mAer Lingus
Deal found 9/9$108
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/126:30 amDUB - LHR
Nonstop1h 30mAer Lingus
Mon 10/139:10 pmLHR - DUB
Nonstop1h 20mAer Lingus
Deal found 9/9$109
This British Airways deal was found by Cheapflights users on 9/9. 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 11/143:00 pmDUB - LHR
Nonstop1h 25mBritish Airways
Sun 11/1612:45 pmLHR - DUB
Nonstop1h 30mBritish Airways
Deal found 9/9$110
This British Airways deal was found by Cheapflights users on 9/11. 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 11/71:40 pmDUB - LHR
Nonstop1h 25mBritish Airways
Mon 11/106:15 pmLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 9/11$111
This CheapOair deal was found by Cheapflights users on 9/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/47:00 pmDUB - LHR
Nonstop1h 20mAer Lingus
Mon 10/69:10 pmLHR - DUB
Nonstop1h 20mAer Lingus
Deal found 9/9$112
This British Airways deal was found by Cheapflights users on 9/9. 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.
Thu 10/910:40 amDUB - LHR
Nonstop1h 30mBritish Airways
Mon 10/136:10 pmLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 9/9$113
This British Airways deal was found by Cheapflights users on 9/9. 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.
Thu 10/911:00 amDUB - LHR
Nonstop1h 30mBritish Airways
Thu 10/166:20 amLHR - DUB
Nonstop1h 25mBritish Airways
Deal found 9/9$114

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 September 11, 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

Fri 11/21

4:00 pm-5:25 pm

Nonstop1h 25m

London Heathrow

Sun 11/23

11:15 am-12:45 pm

Nonstop1h 30m

$110

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 11/21

6:15 pm-7:35 pm

Nonstop1h 20m

London Heathrow

Tue 11/25

11:05 am-12:35 pm

Nonstop1h 30m

$110

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 11/22

1:10 pm-2:35 pm

Nonstop1h 25m

London Heathrow

Sun 11/23

11:15 am-12:45 pm

Nonstop1h 30m

$110

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 11/7

1:40 pm-3:05 pm

Nonstop1h 25m

London Heathrow

Mon 11/10

6:15 pm-7:40 pm

Nonstop1h 25m

$111

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 10/9

10:40 am-12:10 pm

Nonstop1h 30m

London Heathrow

Sat 10/11

6:15 am-7:40 am

Nonstop1h 25m

$111

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 10/10

10:55 am-12:25 pm

Nonstop1h 30m

London Heathrow

Fri 10/17

6:20 am-7:45 am

Nonstop1h 25m

$115

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 11/1

8:40 pm-10:00 pm

Nonstop1h 20m

London Heathrow

Tue 11/4

1:55 pm-3:25 pm

Nonstop1h 30m

$116

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 10/17

8:15 pm-9:35 pm

Nonstop1h 20m

London Heathrow

Tue 10/21

4:50 pm-6:20 pm

Nonstop1h 30m

$122

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 10/7

10:25 am-12:00 pm

Nonstop1h 35m

London Heathrow

Tue 10/14

4:50 pm-6:20 pm

Nonstop1h 30m

$125

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 10/17

8:35 am-10:10 am

Nonstop1h 35m

London Heathrow

Fri 10/17

6:05 pm-7:30 pm

Nonstop1h 25m

$133

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 results
1
2

The best insider tips for Dublin to London Heathrow Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
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

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 August 29, 2025.

The best time to book flights from Dublin to London Heathrow Airport is 48 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, November is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of $661). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of $1,098). 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 September 11, 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 72% 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 September 7, 2025.

Travelers seeking maximum savings on their Dublin to London Heathrow Airport flight should consider departing on Monday 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.

How much does it cost to fly round-trip from Dublin to London Heathrow Airport?

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 September 11, 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
1,271 reviews

Entertainment

6.9

Food

6.5

Overall

7.2

Comfort

7.1

Boarding

7.3

Crew

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.
Aer Lingus
7.2
Good
1,271 reviews
Aer Lingus
7.2
Good
1,271 reviews

Entertainment

6.9

Food

6.5

Overall

7.2

Comfort

7.1

Boarding

7.3

Crew

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.
British Airways
6.7
Okay
7,361 reviews
Aer Lingus
7.2
Good
1,271 reviews

Entertainment

6.9

Food

6.5

Overall

7.2

Comfort

7.1

Boarding

7.3

Crew

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.

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 59 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 25m. 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 $91, 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 (80%), British Airways (76%) or Aer Lingus (76%) 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 $1,086, our data shows the cheapest flight currently is $70. When looking at the most popular route, (Dublin - London Heathrow), you can expect to pay $120 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, November is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of $661). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of $1,098). 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
Hounslow
Hayes
Thornton Heath
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Wembley
Folkestone

Browse thousands of different options on Cheapflights for your next trip

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$91Average$144FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$122Average$189FlexibilityNo cancel feeOn-timeN/A

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