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Cheap flights from Dublin to London Heathrow Airport from C$ 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 13/10. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
11 Oct — 18 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 Wednesday or Monday and return on a Thursday

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 11 September 2025.

Round-trip from

C$ 141

One-way from

C$ 71

Popular in

August

Cheapest in

January

Average price

C$ 202

Good round-trip deal

C$ 179 or less

Good one-way deal

C$ 154 or less
British Airways
  • British Airways
  • 5/2-7/2
  • Nonstop
  • 2h 55m total
  • Dublin to London
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Aer Lingus
  • Aer Lingus
  • 13/10
  • Nonstop
  • 1h 25m total
  • Dublin to London
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Highest demand for flights based on searches. 4% potential increase in price (C$ 14 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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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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 11 September 2025.

Wed 5/1110:20 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Sat 8/118:35 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/9C$ 144
Wed 10/1210:20 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Sun 14/128:25 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/9C$ 146
Fri 14/113:00 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Mon 17/118:25 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 10/9C$ 148
Sat 15/1110:55 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Sat 15/116:25 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/9C$ 150
Wed 15/101:30 p.m.DUB - LHR
Nonstop1h 25mAer Lingus
Wed 22/103:50 p.m.LHR - DUB
Nonstop1h 25mAer Lingus
Deal found 10/9C$ 151
Fri 14/113:00 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Sun 16/1112:45 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 11/9C$ 152
Fri 7/111:40 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Mon 10/116:15 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/9C$ 154
Wed 22/1010:50 a.m.DUB - LHR
Nonstop1h 40mBritish Airways
Wed 29/106:30 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 11/9C$ 158
Fri 7/111:40 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Sun 9/1111:15 a.m.LHR - DUB
Nonstop1h 30mBritish Airways
Deal found 11/9C$ 159
Fri 10/1010:55 a.m.DUB - LHR
Nonstop1h 30mBritish Airways
Sat 11/106:15 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 10/9C$ 161
Mon 13/1010:30 a.m.DUB - LHR
Nonstop1h 30mBritish Airways
Mon 20/104:35 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Deal found 10/9C$ 162

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 11 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

Sat 28/2

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

Nonstop1h 25m

London Heathrow

Wed 4/3

10:40 a.m.-12:10 p.m.

Nonstop1h 30m

C$ 150

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 15/10

10:50 a.m.-12:30 p.m.

Nonstop1h 40m

London Heathrow

Fri 17/10

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

Nonstop1h 25m

C$ 151

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 29/1

6:00 p.m.-7:20 p.m.

Nonstop1h 20m

London Heathrow

Mon 2/2

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

Nonstop1h 25m

C$ 152

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 6/1

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

Nonstop1h 20m

London Heathrow

Sun 11/1

11:15 a.m.-12:45 p.m.

Nonstop1h 30m

C$ 152

DublinLondon

DUB - LHR

DUBLHR

Dublin

Fri 14/11

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

Nonstop1h 25m

London Heathrow

Sun 16/11

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

Nonstop1h 30m

C$ 152

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 24/1

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

Nonstop1h 20m

London Heathrow

Wed 28/1

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

Nonstop1h 25m

C$ 152

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 5/2

6:00 p.m.-7:20 p.m.

Nonstop1h 20m

London Heathrow

Mon 9/2

3:20 p.m.-4:50 p.m.

Nonstop1h 30m

C$ 152

DublinLondon

DUB - LHR

DUBLHR

Dublin

Sat 22/11

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

Nonstop1h 35m

London Heathrow

Tue 25/11

3:35 p.m.-5:05 p.m.

Nonstop1h 30m

C$ 152

DublinLondon

DUB - LHR

DUBLHR

Dublin

Thu 6/11

1:10 p.m.-2:35 p.m.

Nonstop1h 25m

London Heathrow

Mon 10/11

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

Nonstop1h 25m

C$ 152

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 14/1

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

Nonstop1h 20m

London Heathrow

Mon 19/1

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

Nonstop1h 25m

C$ 152

Flights are sorted by cheapest round-trip 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 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 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, January is the cheapest month in which you can book a flight from Dublin to London Heathrow Airport (average of C$ 560). Flying from Dublin to London Heathrow Airport in July is currently the most expensive (average of C$ 856). 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 11 September 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 75% 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 7 September 2025.

Travelers seeking maximum savings on their Dublin to London Heathrow Airport flight should consider departing on Wednesday mornings when fares are most often at their lowest. Saturday at noon 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?

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 11 September 2025.
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
7,361 reviews
Check prices

Entertainment

6.4

Food

6.3

Boarding

6.9

Comfort

6.7

Overall

6.7

Crew

7.6

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
7,361 reviews
British Airways
6.7
Okay
7,361 reviews
Check prices

Entertainment

6.4

Food

6.3

Boarding

6.9

Comfort

6.7

Overall

6.7

Crew

7.6

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 59 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 35m. 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$ 128 on this airline. This flight start at 42% 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 (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 C$ 1,095, our data indicates the cheapest price to be C$ 120. The most popular route (Dublin - London Heathrow), is priced around C$ 579.

  • 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$ 560). Flying from Dublin to London Heathrow Airport in July is currently the most expensive (average of C$ 856). 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
Brentford
Sutton
Hounslow
Slough
Marlow
Leamington Spa
Milton Keynes
Romford
Watford
Bedford
Luton
Southall

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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 128AverageC$ 176FlexibilityNo 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?

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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