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Cheap flights from Dublin to London Heathrow Airport from C$ 57

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 28/2. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

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

Cheap flight deals from Dublin to Heathrow

Enter your travel dates to find the best prices.

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 December 2025.

Sun 21/123:05 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Wed 24/126:15 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 10/12C$ 163
Sun 21/123:05 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Mon 29/126:30 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 10/12C$ 165
Sat 20/125:55 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Thu 1/18:15 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/12C$ 178
Sat 20/125:55 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Wed 24/126:15 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/12C$ 188
Mon 22/128:40 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Fri 26/126:25 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/12C$ 190
Wed 24/128:40 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Fri 26/121:20 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 11/12C$ 192
Fri 19/128:35 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Sat 3/16:30 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/12C$ 193
Wed 31/128:40 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Fri 2/16:30 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 10/12C$ 194

Find 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 December 2025.

Round-trip from

C$ 127

One-way from

C$ 57

Popular in

August

Cheapest in

January

Average price

C$ 251

Good round-trip deal

C$ 1,056 or less

Good one-way deal

C$ 122 or less
British Airways
  • British Airways
  • 24/1-5/2
  • Nonstop
  • 2h 55m total
  • Dublin to London
Search Deals
British Airways
  • British Airways
  • 28/2
  • Nonstop
  • 1h 20m total
  • Dublin to London
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Dublin to London Heathrow.
Search Deals
Price to beat on a one-way flight from Dublin to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customize 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 629,999 searches. Data last updated 12 December 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 24/1

3:10 p.m.-4:35 p.m.

Nonstop1h 25m

London Heathrow

Thu 5/2

3:30 p.m.-5:00 p.m.

Nonstop1h 30m

C$ 127

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 31/1

4:05 p.m.-5:30 p.m.

Nonstop1h 25m

London Heathrow

Sun 1/2

12:45 p.m.-2:15 p.m.

Nonstop1h 30m

C$ 128

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 26/1

5:55 p.m.-7:15 p.m.

Nonstop1h 20m

London Heathrow

Mon 2/2

6:30 a.m.-7:55 a.m.

Nonstop1h 25m

C$ 130

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 26/1

8:40 p.m.-10:00 p.m.

Nonstop1h 20m

London Heathrow

Tue 27/1

1:50 p.m.-3:20 p.m.

Nonstop1h 30m

C$ 134

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 24/1

8:40 p.m.-10:00 p.m.

Nonstop1h 20m

London Heathrow

Thu 29/1

6:30 a.m.-7:55 a.m.

Nonstop1h 25m

C$ 137

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 16/5

8:10 p.m.-9:30 p.m.

Nonstop1h 20m

London Heathrow

Fri 29/5

6:20 a.m.-7:45 a.m.

Nonstop1h 25m

C$ 142

DublinLondon

DUB - LHR

DUBLHR

Dublin

Mon 12/1

4:00 p.m.-5:25 p.m.

Nonstop1h 25m

London Heathrow

Tue 20/1

8:25 a.m.-9:50 a.m.

Nonstop1h 25m

C$ 150

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 16/1

3:00 p.m.-4:25 p.m.

Nonstop1h 25m

London Heathrow

Sat 24/1

1:35 p.m.-3:05 p.m.

Nonstop1h 30m

C$ 150

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 20/1

10:55 a.m.-12:30 p.m.

Nonstop1h 35m

London Heathrow

Wed 28/1

6:30 a.m.-7:55 a.m.

Nonstop1h 25m

C$ 150

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 14/1

10:20 a.m.-11:55 a.m.

Nonstop1h 35m

London Heathrow

Wed 21/1

3:30 p.m.-5:00 p.m.

Nonstop1h 30m

C$ 150

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

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 round-trip 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 round-trip flight from Dublin to Heathrow. Price data was last updated on 5 December 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 C$ 119). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of C$ 160). 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 December 2025.

A simple way to save on the total cost of your ticket is to fly from Dublin to London Heathrow Airport in the evening. If you’re flexible enough to do this you can expect to save up to 65% on your trip compared to booking a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Dublin to Heathrow. Price data was last updated on 6 December 2025.

Travelers seeking maximum savings on their Dublin to London Heathrow Airport flight should consider departing on Monday evenings when fares are most often at their lowest. Thursday at noon 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 12 December 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
1,392 reviews
Check prices

Comfort

7.1

Crew

8.0

Overall

7.2

Entertainment

6.9

Food

6.6

Boarding

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.2
Good
1,392 reviews
Aer Lingus
7.2
Good
1,392 reviews
Check prices

Comfort

7.1

Crew

8.0

Overall

7.2

Entertainment

6.9

Food

6.6

Boarding

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
British Airways
6.7
Okay
7,571 reviews
Aer Lingus
7.2
Good
1,392 reviews
Check prices

Comfort

7.1

Crew

8.0

Overall

7.2

Entertainment

6.9

Food

6.6

Boarding

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

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 47 outbound flights to London Heathrow per day from 2 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?

    Departing from Dublin to London Heathrow Airport will take you 1h 25m. The distance from Dublin to London Heathrow Airport is about 449 km. Most flights are nonstop.

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

    Our cheapest airline available from Dublin to London Heathrow Airport is British Airways. Our recent data shows that you can find tickets from as low as C$ 136 on this airline. An additional option worth looking into is Aer Lingus, starting at C$ 265. These flights start at 40% lower than the current average price 3 months from now.

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

    Before booking your flight to London Heathrow Airport from Dublin, check out the most reliable airlines to get you to your destination on time: Air Canada (81%), British Airways (77%), Aer Lingus( 77%).

  • 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 C$ 1,076, our data indicates the cheapest price to be C$ 83. The most popular route (Dublin - London Heathrow), is priced around C$ 576.

  • 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 vacation 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 C$ 119). Flying from Dublin to London Heathrow Airport in June is currently the most expensive (average of C$ 160). 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
Sutton
Twickenham
Slough
Marlow
Milton Keynes
Leamington Spa
Romford
Watford
Bedford
Luton
Stratford-upon-Avon
Gatwick
Hounslow

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.

Alternative routes for Dublin to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Dublin to Gatwick flights

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 629,999 searches. Data last updated 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 136AverageC$ 178FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapestC$ 265AverageC$ 287FlexibilityNo 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 goes through 900+ travel sites to look for the best flight deals for flights from Dublin to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Dublin to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Dublin to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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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