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Cheap flights from Dublin to London Heathrow Airport from £34

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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Dublin to London Heathrow are usually found in January or February, booked 66 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 17 September 2025.

Round-trip from

£73

One-way from

£34

Popular in

August

Cheapest in

January

Average price

£122

Good round-trip deal

£359 or less

Good one-way deal

£76 or less
Aer Lingus
  • Aer Lingus
  • 14/10-21/10
  • Nonstop
  • 2h 45m total
  • Dublin to London
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Aer Lingus
  • Aer Lingus
  • 11/11
  • Nonstop
  • 1h 20m total
  • Dublin to London
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£6 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return 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 17 September 2025.

Tue 14/1012:00DUB - LHR
Nonstop1h 25mAer Lingus
Tue 21/1007:40LHR - DUB
Nonstop1h 20mAer Lingus
Deal found 16/9£73
Mon 13/1018:00DUB - LHR
Nonstop1h 25mAer Lingus
Mon 20/1021:10LHR - DUB
Nonstop1h 20mAer Lingus
Deal found 15/9£74
Tue 11/1110:55DUB - LHR
Nonstop1h 35mBritish Airways
Tue 11/1115:35LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 15/9£76
Wed 12/1113:10DUB - LHR
Nonstop1h 25mBritish Airways
Sat 15/1118:25LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 15/9£77
Wed 5/1110:20DUB - LHR
Nonstop1h 35mBritish Airways
Sat 8/1112:50LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 15/9£78
Sat 11/1019:00DUB - LHR
Nonstop1h 20mAer Lingus
Tue 21/1015:50LHR - DUB
Nonstop1h 25mAer Lingus
Deal found 15/9£78
Wed 22/1010:55DUB - LHR
Nonstop1h 35mBritish Airways
Wed 29/1006:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 16/9£80
Thu 27/1118:00DUB - LHR
Nonstop1h 20mBritish Airways
Sun 30/1112:45LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 15/9£81
Mon 13/1018:00DUB - LHR
Nonstop1h 25mAer Lingus
Tue 21/1015:10LHR - DUB
Nonstop1h 25mAer Lingus
Deal found 15/9£81
Sun 30/1120:40DUB - LHR
Nonstop1h 20mBritish Airways
Tue 2/1213:55LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 16/9£82
Fri 7/1113:40DUB - LHR
Nonstop1h 25mBritish Airways
Mon 10/1118:15LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 15/9£83

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 17 September 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

Sat 28/2

13:10-14:35

Nonstop1h 25m

London Heathrow

Wed 4/3

10:40-12:10

Nonstop1h 30m

£79

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 22/10

10:55-12:30

Nonstop1h 35m

London Heathrow

Wed 29/10

06:30-07:55

Nonstop1h 25m

£80

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 28/11

16:00-17:25

Nonstop1h 25m

London Heathrow

Mon 1/12

15:20-16:50

Nonstop1h 30m

£81

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 28/11

16:00-17:25

Nonstop1h 25m

London Heathrow

Thu 4/12

18:20-19:45

Nonstop1h 25m

£81

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 30/1

10:45-12:20

Nonstop1h 35m

London Heathrow

Sat 7/2

10:35-12:05

Nonstop1h 30m

£81

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 27/11

08:50-10:25

Nonstop1h 35m

London Heathrow

Mon 1/12

12:50-14:20

Nonstop1h 30m

£81

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 12/11

08:50-10:25

Nonstop1h 35m

London Heathrow

Wed 19/11

08:10-09:35

Nonstop1h 25m

£81

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 14/10

10:30-12:00

Nonstop1h 30m

London Heathrow

Wed 15/10

16:30-17:55

Nonstop1h 25m

£81

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 15/10

12:45-14:15

Nonstop1h 30m

London Heathrow

Wed 22/10

16:30-17:55

Nonstop1h 25m

£90

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 2/12

08:50-10:25

Nonstop1h 35m

London Heathrow

Tue 2/12

15:35-17:05

Nonstop1h 30m

£91

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 20 results
1
2

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 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 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 return flight from Dublin to Heathrow. Price data was last updated on 12 September 2025.

Booking 66 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dublin to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of £112). Flying from Dublin to London Heathrow Airport in August is currently the most expensive (average of £164). 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 17 September 2025.

One of the essential ways to save on airfare from Dublin to London Heathrow Airport is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 58% on airfare.

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

Use this chart to determine the cheapest time to fly return from Dublin to Heathrow. Price data was last updated on 14 September 2025.

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

How much does it cost for a return flight 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 17 September 2025.
Get a feel of what it's like to fly with Aer Lingus and British Airways from Dublin to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Entertainment

6.9

Crew

8.0

Boarding

7.3

Food

6.5

Comfort

7.1

Overall

7.2

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
1,274 reviews
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Entertainment

6.9

Crew

8.0

Boarding

7.3

Food

6.5

Comfort

7.1

Overall

7.2

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
7,363 reviews
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Entertainment

6.9

Crew

8.0

Boarding

7.3

Food

6.5

Comfort

7.1

Overall

7.2

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?

    Located just 5.7 mi from the city center, Dublin is the airport most travelers will use when flying to London Heathrow from Dublin. Booking flights from Dublin (DUB) to London Heathrow should be relatively easy as there are 64 daily outbound flights to London Heathrow from 2 different airlines.

  • 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. Most flights are nonstop.

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

    Flying on British Airways is currently your cheapest option to London Heathrow Airport, with prices starting at £57. Another option worth looking into is Aer Lingus, starting at £98 return. Users have found that British Airways is 52% cheaper than the other options available to this destination.

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

    The top 3 most reliable airlines when flying from Dublin to London Heathrow Airport are Air Canada (78%), American Airlines (73%) and British Airways (73%).

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

    While on average a flight from Dublin to London Heathrow Airport is generally £1,246, our data shows the cheapest flight currently is £52. When looking at the most popular route, (Dublin - London Heathrow), you can expect to pay £70 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 holiday 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, January is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of £112). Flying from Dublin to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Hounslow
Slough
Gatwick
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Winchester
Chichester
Ipswich
Swindon
Dartford
Guildford
Brentford

Browse thousands of different options on Cheapflights for your next trip

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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 858,174 searches. Data last updated 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£57Average£104FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£98Average£141FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Dublin 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 Dublin 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 Dublin.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Dublin to Heathrow flexibly with Cheapflights today.

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

Yes! Start tracking prices for Dublin to Heathrow 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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