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Cheap flights from Dublin to London Heathrow Airport from £33

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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

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

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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 31 October 2025.

Thu 11/1220:40DUB - LHR
Nonstop1h 20mBritish Airways
Mon 15/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 30/10£71
Fri 12/1220:35DUB - LHR
Nonstop1h 20mBritish Airways
Mon 15/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 30/10£72
Sat 13/1216:05DUB - LHR
Nonstop1h 25mBritish Airways
Sun 14/1208:25LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 30/10£74
Sat 15/1117:55DUB - LHR
Nonstop1h 20mBritish Airways
Sat 29/1118:25LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 30/10£74
Fri 12/1220:35DUB - LHR
Nonstop1h 20mBritish Airways
Sun 14/1208:25LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 30/10£75
Mon 8/1208:50DUB - LHR
Nonstop1h 35mBritish Airways
Thu 11/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 30/10£79
Sat 6/1215:10DUB - LHR
Nonstop1h 25mBritish Airways
Tue 16/1211:05LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 30/10£80
Sat 15/1117:55DUB - LHR
Nonstop1h 20mBritish Airways
Sat 22/1115:30LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 30/10£81
Tue 9/1208:50DUB - LHR
Nonstop1h 35mBritish Airways
Sat 13/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 30/10£83
Wed 10/1208:50DUB - LHR
Nonstop1h 35mBritish Airways
Sat 13/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 29/10£83
Fri 28/1120:35DUB - LHR
Nonstop1h 20mBritish Airways
Sat 29/1112:50LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 30/10£84
Wed 10/1208:50DUB - LHR
Nonstop1h 35mBritish Airways
Fri 12/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 30/10£85

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 31 October 2025.

Round-trip from

£71

One-way from

£33

Popular in

August

Cheapest in

January

Average price

£127

Good round-trip deal

£286 or less

Good one-way deal

£63 or less
British Airways
  • British Airways
  • 11/12-15/12
  • Nonstop
  • 2h 45m total
  • Dublin to London
Search Deals
British Airways
  • British Airways
  • 11/12
  • Nonstop
  • 1h 20m total
  • Dublin to London
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£5 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
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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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 31 October 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

Mon 19/1

10:45-12:20

Nonstop1h 35m

London Heathrow

Mon 26/1

15:20-16:50

Nonstop1h 30m

£71

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 11/12

20:40-22:00

Nonstop1h 20m

London Heathrow

Sun 14/12

08:25-09:50

Nonstop1h 25m

£75

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 17/1

15:10-16:35

Nonstop1h 25m

London Heathrow

Mon 19/1

13:35-15:05

Nonstop1h 30m

£79

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 2/3

20:40-22:00

Nonstop1h 20m

London Heathrow

Tue 3/3

18:15-19:40

Nonstop1h 25m

£83

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 17/3

20:40-22:00

Nonstop1h 20m

London Heathrow

Thu 19/3

06:30-07:55

Nonstop1h 25m

£83

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 9/2

10:45-12:20

Nonstop1h 35m

London Heathrow

Fri 13/2

06:30-07:55

Nonstop1h 25m

£89

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 5/12

20:35-21:55

Nonstop1h 20m

London Heathrow

Fri 12/12

06:30-07:55

Nonstop1h 25m

£90

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 10/12

13:10-14:35

Nonstop1h 25m

London Heathrow

Sun 14/12

08:25-09:50

Nonstop1h 25m

£90

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 4/12

08:50-10:25

Nonstop1h 35m

London Heathrow

Mon 8/12

18:15-19:40

Nonstop1h 25m

£92

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 14/3

10:55-12:30

Nonstop1h 35m

London Heathrow

Tue 17/3

06:30-07:55

Nonstop1h 25m

£93

Flights are sorted by cheapest return flights first.

Deals found on 31/10

Showing 1-10 of 18 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 24 October 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, February is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of £60). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of £84). 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 31 October 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 51% 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 26 October 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 31 October 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
1,365 reviews
Check prices

Comfort

7.1

Food

6.6

Crew

8.0

Boarding

7.4

Entertainment

6.9

Overall

7.2

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
Aer Lingus
7.2
Good
1,365 reviews
Aer Lingus
7.2
Good
1,365 reviews
Check prices

Comfort

7.1

Food

6.6

Crew

8.0

Boarding

7.4

Entertainment

6.9

Overall

7.2

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
British Airways
6.7
Okay
7,488 reviews
Aer Lingus
7.2
Good
1,365 reviews
Check prices

Comfort

7.1

Food

6.6

Crew

8.0

Boarding

7.4

Entertainment

6.9

Overall

7.2

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.

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 49 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 35m. 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 £73. Another option worth looking into is Aer Lingus, starting at £99 return. Users have found that British Airways is 41% 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 (75%), British Airways (68%) and Aer Lingus (68%).

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

    While on average a flight from Dublin to London Heathrow Airport is generally £1,375, our data shows the cheapest flight currently is £47. 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, February is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of £60). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of £84). 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
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Chichester
Swindon
Crawley
Romford
Brentford
Ipswich

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 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£73Average£111FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£99Average£145FlexibilityNo 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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