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Cheap flights from Dublin to London Heathrow Airport from $71

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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
12 Oct — 19 Oct1
1 adult
1 adult, Economy

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 Tuesday or Thursday and return on a Wednesday

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 12 September 2025.

Round-trip from

$157

One-way from

$71

Popular in

August

Cheapest in

January

Average price

$220

Good one-way deal

$147 or less
British Airways
  • British Airways
  • 5/11-8/11
  • Nonstop
  • 3h 00m total
  • Dublin to London
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Aer Lingus
  • Aer Lingus
  • 4/11
  • Nonstop
  • 1h 20m total
  • Dublin to London
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Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease ($7 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 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 12 September 2025.

Wed 5/1110:20DUB - LHR
Nonstop1h 35mBritish Airways
Sat 8/1106:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 12/9$157
Wed 10/1210:20DUB - LHR
Nonstop1h 35mBritish Airways
Sun 14/1208:25LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/9$158
Fri 14/1115:00DUB - LHR
Nonstop1h 25mBritish Airways
Mon 17/1108:25LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 10/9$161
Sat 15/1110:55DUB - LHR
Nonstop1h 35mBritish Airways
Sat 15/1118:25LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/9$163
Wed 15/1010:50DUB - LHR
Nonstop1h 40mBritish Airways
Fri 17/1006:20LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/9$164
Fri 14/1115:00DUB - LHR
Nonstop1h 25mBritish Airways
Sun 16/1112:45LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 12/9$166
Fri 7/1113:40DUB - LHR
Nonstop1h 25mBritish Airways
Mon 10/1118:15LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/9$167
Wed 22/1010:50DUB - LHR
Nonstop1h 40mBritish Airways
Wed 29/1006:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/9$172
Fri 7/1113:40DUB - LHR
Nonstop1h 25mBritish Airways
Sun 9/1111:15LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 11/9$173
Fri 10/1010:55DUB - LHR
Nonstop1h 30mBritish Airways
Sat 11/1006:15LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 10/9$175

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 647,157 searches. Data last updated 12 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

Wed 15/10

10:50-12:30

Nonstop1h 40m

London Heathrow

Fri 17/10

06:20-07:45

Nonstop1h 25m

$164

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 14/11

15:00-16:25

Nonstop1h 25m

London Heathrow

Sun 16/11

12:45-14:15

Nonstop1h 30m

$166

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 22/11

10:55-12:30

Nonstop1h 35m

London Heathrow

Tue 25/11

15:35-17:05

Nonstop1h 30m

$166

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 17/10

20:15-21:35

Nonstop1h 20m

London Heathrow

Tue 21/10

16:50-18:20

Nonstop1h 30m

$184

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 16/10

12:00-13:25

Nonstop1h 25m

London Heathrow

Mon 20/10

07:40-09:00

Nonstop1h 20m

$185

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 31/10

20:35-21:55

Nonstop1h 20m

London Heathrow

Tue 4/11

13:55-15:25

Nonstop1h 30m

$190

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 17/10

20:15-21:35

Nonstop1h 20m

London Heathrow

Mon 20/10

16:35-18:00

Nonstop1h 25m

$192

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 4/10

19:00-20:20

Nonstop1h 20m

London Heathrow

Sun 5/10

08:50-10:15

Nonstop1h 25m

$195

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 10/10

20:15-21:35

Nonstop1h 20m

London Heathrow

Sun 12/10

14:55-16:20

Nonstop1h 25m

$210

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 2/10

08:35-10:10

Nonstop1h 35m

London Heathrow

Sun 5/10

08:10-09:35

Nonstop1h 25m

$226

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 22 results
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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 29 August 2025.

The price you pay for your flight from Dublin to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, October is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of $1,037). Flying from Dublin to London Heathrow Airport in December is currently the most expensive (average of $1,667). 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 12 September 2025.

When flying from Dublin to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 95% versus a flight at midday.

How much does it cost for a return flight from Dublin to London Heathrow Airport?

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 0 airlines. Dublin is conveniently located just 9.2 km from Dublin’s city centre.

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

    British Airways and Aer Lingus can get you from Dublin to London Heathrow Airport in just under 1h 25m. Your travel time will be generally consistent. Airlines will cover a distance of 449 km. Most flights are nonstop.

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

    Before booking your flight to London Heathrow Airport from Dublin, have a look at the most reliable airlines to get you to your destination on time: Air Canada (80%), British Airways (76%), Aer Lingus( 76%).

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

    Looking for the cheapest flight from Dublin to London Heathrow Airport? While on average our users pay $902, our data indicates the cheapest price to be $100. The most popular route (Dublin - London Heathrow), is priced around $98.

  • 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, October is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of $1,037). Flying from Dublin to London Heathrow Airport in December is currently the most expensive (average of $1,667). 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
Hounslow
Salisbury
Horsham
Southall
Chatham
Dover
Dorking
Chertsey

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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, Cheapflights offers price alerts on Dublin to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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