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Cheap flights from Dublin to London Heathrow Airport from C$ 75

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
26 Aug — 2 Sep1
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 63 days in advance, depart on a Friday or Wednesday and return on a Sunday

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 27 July 2026.

Thu 27/81:45 p.m.
DUB
-
LHR
Nonstop1h 30m
British Airways
Sun 30/88:15 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Deal found 25/7C$ 155
Tue 24/118:40 p.m.
DUB
-
LHR
Nonstop1h 20m
British Airways
Fri 27/116:30 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Deal found 25/7C$ 159
Sat 7/118:40 p.m.
DUB
-
LHR
Nonstop1h 20m
British Airways
Sun 8/1111:15 a.m.
LHR
-
DUB
Nonstop1h 30m
British Airways
Deal found 27/7C$ 161
Wed 26/810:30 a.m.
DUB
-
LHR
Nonstop1h 30m
British Airways
Tue 1/96:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Deal found 22/7C$ 162
Fri 27/118:35 p.m.
DUB
-
LHR
Nonstop1h 20m
British Airways
Sun 13/128:25 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Deal found 27/7C$ 163
Fri 2/108:10 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Mon 5/108:15 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Deal found 25/7C$ 165
Mon 28/98:30 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Wed 30/95:20 p.m.
LHR
-
DUB
Nonstop1h 30m
British Airways
Deal found 25/7C$ 166
Tue 22/98:25 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Fri 25/94:30 p.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Deal found 25/7C$ 168
Wed 9/98:30 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Thu 10/94:30 p.m.
LHR
-
DUB
Nonstop1h 30m
British Airways
Deal found 25/7C$ 169
Tue 8/98:25 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Wed 9/96:15 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Deal found 27/7C$ 170
Thu 10/98:35 a.m.
DUB
-
LHR
Nonstop1h 35m
British Airways
Thu 17/91:05 p.m.
LHR
-
DUB
Nonstop1h 30m
British Airways
Deal found 27/7C$ 172

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 27 July 2026.

Round-trip from

C$ 155

One-way from

C$ 75

Popular in

April

Cheapest in

January

Average price

C$ 265

Good one-way deal

C$ 110 or less
British Airways
  • British Airways
  • 27/8-30/8
  • Nonstop
  • 2h 55m total
  • Dublin to London
Search Deals
British Airways
  • British Airways
  • 12/10
  • Nonstop
  • 1h 35m total
  • Dublin to London
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 27 July 2026.
Use the filters below to find and compare flights from Dublin to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 2/10

8:10 p.m.-9:25 p.m.

Nonstop1h 15m

London Heathrow

Mon 5/10

8:15 a.m.-9:40 a.m.

Nonstop1h 25m

C$ 165

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 16/9

8:30 p.m.-9:45 p.m.

Nonstop1h 15m

London Heathrow

Fri 18/9

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

Nonstop1h 25m

C$ 169

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 17/9

8:35 a.m.-10:10 a.m.

Nonstop1h 35m

London Heathrow

Sun 20/9

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

Nonstop1h 25m

C$ 172

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 11/8

3:15 p.m.-4:45 p.m.

Nonstop1h 30m

London Heathrow

Sat 29/8

5:55 p.m.-7:25 p.m.

Nonstop1h 30m

C$ 173

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 9/9

8:30 p.m.-9:45 p.m.

Nonstop1h 15m

London Heathrow

Wed 16/9

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

Nonstop1h 30m

C$ 173

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 29/9

8:25 p.m.-9:40 p.m.

Nonstop1h 15m

London Heathrow

Wed 30/9

5:20 p.m.-6:50 p.m.

Nonstop1h 30m

C$ 175

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 10/9

8:35 a.m.-10:10 a.m.

Nonstop1h 35m

London Heathrow

Thu 17/9

1:05 p.m.-2:35 p.m.

Nonstop1h 30m

C$ 175

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 21/8

8:10 p.m.-9:25 p.m.

Nonstop1h 15m

London Heathrow

Sun 23/8

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

Nonstop1h 25m

C$ 176

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 11/8

3:15 p.m.-4:45 p.m.

Nonstop1h 30m

London Heathrow

Fri 14/8

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

Nonstop1h 25m

C$ 180

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 19/8

10:30 a.m.-12:00 p.m.

Nonstop1h 30m

London Heathrow

Thu 20/8

10:35 a.m.-12:05 p.m.

Nonstop1h 30m

C$ 189

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/7

Showing 1-10 of 22 resultsSorted by cheapest first
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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 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?

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 62 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, January is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of C$ 193). Flying from Dublin to London Heathrow Airport in April is currently the most expensive (average of C$ 271). 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 27 July 2026.

A simple way to save on the total cost of your ticket is to fly from Dublin to London Heathrow Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 79% on your trip compared to booking a flight in the morning.

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 25 July 2026.

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. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Dublin to London Heathrow Airport?

Airfare is below average for this route at the moment.

Dublin to London Heathrow Airport flights typically cost between C$ 206 and C$ 318 in August.
The cheapest round-trip price found within the last 5 days was C$ 155 on British Airways (27 Aug-30 Aug).

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 27 July 2026.
Get a feel of what it's like to fly with 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.
British Airways
6.7
Okay
8,130 reviews
Check prices

Comfort

6.8

Boarding

7.0

Food

6.4

Entertainment

6.5

Crew

7.7

Overall

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.
British Airways
6.7
Okay
8,130 reviews
British Airways
6.7
Okay
8,130 reviews
Check prices

Comfort

6.8

Boarding

7.0

Food

6.4

Entertainment

6.5

Crew

7.7

Overall

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.

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 57 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?

    Departing from Dublin to London Heathrow Airport will take you 1h 15m. The distance from Dublin to London Heathrow Airport is about 449 km. Most flights are nonstop.

  • What is the cheapest airline to fly 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$ 134 on this airline. This flight start at 44% 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 (76%), Aer Lingus (68%), Qatar Airways( 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 C$ 182, our data indicates the cheapest price to be C$ 75. The most popular route (Dublin - London Heathrow), is priced around C$ 589.

  • 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, January is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of C$ 193). Flying from Dublin to London Heathrow Airport in April is currently the most expensive (average of C$ 271). 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
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Luton
Slough
Marlow
Cobham
Hounslow
Leamington Spa
Northampton
Watford
High Wycombe
Stratford-upon-Avon
Moreton-in-Marsh

Browse thousands of different options on Cheapflights for your next trip

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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 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 629,999 searches. Data last updated 27 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 134AverageC$ 218FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Dublin to Heathrow?

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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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