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Cheap flights from Dublin to London Heathrow Airport from $73

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 22/11. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
28 Nov — 5 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 Tuesday or Thursday and return on a Wednesday

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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 29 October 2025.

Wed 10/1208:50DUB - LHR
Nonstop1h 35mBritish Airways
Thu 11/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 27/10$166
Tue 2/1208:50DUB - LHR
Nonstop1h 35mBritish Airways
Thu 4/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 26/10$167
Wed 3/1213:10DUB - LHR
Nonstop1h 25mBritish Airways
Thu 4/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 27/10$169
Wed 3/1213:10DUB - LHR
Nonstop1h 25mBritish Airways
Wed 3/1218:15LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 28/10$172
Tue 2/1220:40DUB - LHR
Nonstop1h 20mBritish Airways
Tue 9/1211:05LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 26/10$174
Fri 12/1218:15DUB - LHR
Nonstop1h 20mBritish Airways
Sun 14/1212:45LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 28/10$177
Fri 28/1120:35DUB - LHR
Nonstop1h 20mBritish Airways
Sat 29/1113:35LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 26/10$178
Thu 11/1220:40DUB - LHR
Nonstop1h 20mBritish Airways
Mon 15/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 28/10$180
Wed 12/1110:20DUB - LHR
Nonstop1h 35mBritish Airways
Sat 15/1113:35LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 26/10$181
Fri 5/1220:35DUB - LHR
Nonstop1h 20mBritish Airways
Mon 8/1218:15LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 28/10$183
Sat 22/1117:55DUB - LHR
Nonstop1h 20mBritish Airways
Sun 23/1108:25LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 27/10$184
Sat 22/1117:55DUB - LHR
Nonstop1h 20mBritish Airways
Mon 24/1115:20LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 27/10$187

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 29 October 2025.

Round-trip from

$157

One-way from

$73

Popular in

August

Cheapest in

January

Average price

$254

Good one-way deal

$175 or less
British Airways
  • British Airways
  • 17/1-19/1
  • Nonstop
  • 2h 50m total
  • Dublin to London
Search Deals
British Airways
  • British Airways
  • 22/11
  • Nonstop
  • 1h 20m total
  • Dublin to London
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a one-way flight from Dublin to London Heathrow.
Search Deals

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 29 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

Sat 10/1

20:40-22:00

Nonstop1h 20m

London Heathrow

Tue 13/1

11:05-12:35

Nonstop1h 30m

$167

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 17/3

13:25-14:50

Nonstop1h 25m

London Heathrow

Thu 19/3

06:30-07:55

Nonstop1h 25m

$167

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 6/12

15:10-16:35

Nonstop1h 25m

London Heathrow

Mon 8/12

10:45-12:15

Nonstop1h 30m

$174

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 9/2

15:10-16:35

Nonstop1h 25m

London Heathrow

Fri 13/2

06:30-07:55

Nonstop1h 25m

$178

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 11/12

20:40-22:00

Nonstop1h 20m

London Heathrow

Mon 15/12

06:30-07:55

Nonstop1h 25m

$180

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 7/1

08:50-10:25

Nonstop1h 35m

London Heathrow

Sun 18/1

12:45-14:15

Nonstop1h 30m

$180

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 7/1

13:10-14:35

Nonstop1h 25m

London Heathrow

Tue 13/1

13:50-15:20

Nonstop1h 30m

$180

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 9/1

10:45-12:20

Nonstop1h 35m

London Heathrow

Sun 18/1

12:45-14:15

Nonstop1h 30m

$180

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 9/1

15:00-16:25

Nonstop1h 25m

London Heathrow

Mon 19/1

06:30-07:55

Nonstop1h 25m

$180

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

$181

Flights are sorted by cheapest return flights first.

Deals found on 27/10

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.

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 66 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, February is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of $120). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of $169). 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 29 October 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 94% versus a flight at midday.

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 29 October 2025.
Read reviews from past customers who have flown with British Airways from Dublin to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,483 reviews
Check prices

Comfort

6.7

Boarding

6.9

Crew

7.6

Food

6.3

Overall

6.7

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,483 reviews
British Airways
6.7
Okay
7,483 reviews
Check prices

Comfort

6.7

Boarding

6.9

Crew

7.6

Food

6.3

Overall

6.7

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

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 44 outbound flights to London Heathrow per day from 1 airline. 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 can get you from Dublin to London Heathrow Airport in just under 1h 20m. Your travel time will be generally consistent. Airlines will cover a distance of 449 km. Most flights are nonstop.

  • What is the cheapest airline to fly from Dublin to London Heathrow Airport round-trip?

    According to our current data, British Airways ($168), offers the cheapest pricing from Dublin to London Heathrow Airport. British Airways is currently priced 33% below the average price you’ll pay for this route.

  • 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 (75%), British Airways (68%), Aer Lingus( 68%).

  • 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 $242, our data indicates the cheapest price to be $147. The most popular route (Dublin - London Heathrow), is priced around $99.

  • 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 $120). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of $169). 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
Kingston upon Thames
Salisbury
Hounslow
Horsham
Southall
Chatham
Dorking
Dover
Braintree
Chertsey

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 airline flying from Dublin to Heathrow

Discover the top airline 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 647,157 searches. Data last updated 29 October 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$168Average$235FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

Cheapflights helps you find that perfect flight to Heathrow from Dublin by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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, 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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