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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 14/11. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
27 Aug — 3 Sep1
1 adult

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 22 August 2025.

Round-trip from

£73

One-way from

£34

Popular in

August

Cheapest in

January

Average price

£137

Good round-trip deal

£337 or less

Good one-way deal

£71 or less
British Airways
  • British Airways
  • 3/12-6/12
  • Nonstop
  • 2h 50m total
  • Dublin to London
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British Airways
  • British Airways
  • 14/11
  • Nonstop
  • 1h 25m total
  • Dublin to London
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Highest demand for flights based on searches. 3% potential increase in price (£3 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 August 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 22 August 2025.

Wed 3/1213:10DUB - LHR
Nonstop1h 25mBritish Airways
Sat 6/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 20/8£73
Mon 15/1210:45DUB - LHR
Nonstop1h 35mBritish Airways
Mon 15/1215:20LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 20/8£75
Wed 26/1113:10DUB - LHR
Nonstop1h 25mBritish Airways
Mon 1/1213:35LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 20/8£76
Sat 13/1217:55DUB - LHR
Nonstop1h 20mBritish Airways
Sun 14/1218:20LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 21/8£77
Thu 18/908:35DUB - LHR
Nonstop1h 35mBritish Airways
Mon 22/916:35LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 20/8£78
Wed 5/1108:50DUB - LHR
Nonstop1h 35mBritish Airways
Sat 8/1118:25LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 21/8£79
Wed 17/908:30DUB - LHR
Nonstop1h 35mBritish Airways
Mon 22/916:35LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 20/8£80
Wed 17/910:50DUB - LHR
Nonstop1h 40mBritish Airways
Wed 24/916:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 20/8£81
Mon 6/1011:05DUB - LHR
Nonstop1h 30mBritish Airways
Mon 13/1018:10LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 21/8£83
Sat 4/1008:35DUB - LHR
Nonstop1h 35mBritish Airways
Sat 11/1014:55LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 20/8£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 22 August 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

Wed 18/2

13:10-14:35

Nonstop1h 25m

London Heathrow

Fri 20/2

06:30-07:55

Nonstop1h 25m

£74

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 30/1

18:15-19:35

Nonstop1h 20m

London Heathrow

Mon 2/2

12:50-14:20

Nonstop1h 30m

£74

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 15/12

10:45-12:20

Nonstop1h 35m

London Heathrow

Mon 15/12

15:20-16:50

Nonstop1h 30m

£75

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 8/12

10:45-12:20

Nonstop1h 35m

London Heathrow

Sun 14/12

18:20-19:45

Nonstop1h 25m

£76

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 26/11

13:10-14:35

Nonstop1h 25m

London Heathrow

Mon 1/12

13:35-15:05

Nonstop1h 30m

£76

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 31/1

17:55-19:15

Nonstop1h 20m

London Heathrow

Tue 3/2

08:25-09:50

Nonstop1h 25m

£77

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 5/11

10:20-11:55

Nonstop1h 35m

London Heathrow

Sat 8/11

15:30-17:00

Nonstop1h 30m

£77

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 21/11

20:35-21:55

Nonstop1h 20m

London Heathrow

Tue 25/11

18:15-19:40

Nonstop1h 25m

£77

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 28/11

20:35-21:55

Nonstop1h 20m

London Heathrow

Sun 30/11

16:10-17:40

Nonstop1h 30m

£77

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 8/11

15:10-16:35

Nonstop1h 25m

London Heathrow

Mon 10/11

13:35-15:05

Nonstop1h 30m

£77

Flights are sorted by cheapest return flights first.

Deals found on 20/8

Showing 1-10 of 21 results
1
2
3

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 8 August 2025.

Booking 48 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 22 August 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 64% 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 17 August 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.

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 22 August 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
7.1
Good
1,228 reviews
Check prices

Comfort

7.1

Entertainment

6.9

Food

6.5

Boarding

7.3

Overall

7.1

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
7.1
Good
1,228 reviews
Aer Lingus
7.1
Good
1,228 reviews
Check prices

Comfort

7.1

Entertainment

6.9

Food

6.5

Boarding

7.3

Overall

7.1

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
7,292 reviews
Aer Lingus
7.1
Good
1,228 reviews
Check prices

Comfort

7.1

Entertainment

6.9

Food

6.5

Boarding

7.3

Overall

7.1

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?

    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 62 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 £58. Another option worth looking into is Aer Lingus, starting at £97 return. Users have found that British Airways is 51% 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 (79%), British Airways (74%) and American Airlines (74%).

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

    While on average a flight from Dublin to London Heathrow Airport is generally £1,314, our data shows the cheapest flight currently is £54. When looking at the most popular route, (Dublin - London Heathrow), you can expect to pay £71 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
Gatwick
Slough
Northampton
Deal
Luton
Wembley
Ilford
Crawley
Hayes
Watford
Folkestone
Ipswich
Winchester
Swindon
Eastbourne
Chichester
Southend-on-Sea

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 22 August 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£58Average£98FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£97Average£140FlexibilityNo 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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