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Cheap flights from London Heathrow Airport to Dublin from C$ 84

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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DUB
20 Feb — 27 Feb1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Dublin are usually found in January or February, booked 87 days in advance, depart on a Thursday or Monday and return on a Wednesday

Cheap flight deals from Heathrow to Dublin

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Dublin
Explore the most affordable flight options available from Heathrow to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 January 2026.

Sat 7/312:50 p.m.
LHR
-
DUB
Nonstop1h 30m
British Airways
Mon 9/38:40 p.m.
DUB
-
LHR
Nonstop1h 20m
British Airways
Deal found 21/1C$ 129
Thu 26/26:30 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Mon 2/38:40 p.m.
DUB
-
LHR
Nonstop1h 20m
British Airways
Deal found 20/1C$ 137
Sun 1/311:15 a.m.
LHR
-
DUB
Nonstop1h 30m
British Airways
Wed 4/38:40 p.m.
DUB
-
LHR
Nonstop1h 20m
British Airways
Deal found 19/1C$ 140
Sat 7/312:50 p.m.
LHR
-
DUB
Nonstop1h 30m
British Airways
Sat 14/38:40 p.m.
DUB
-
LHR
Nonstop1h 20m
British Airways
Deal found 19/1C$ 141
Sun 8/36:20 p.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Mon 9/310:45 a.m.
DUB
-
LHR
Nonstop1h 35m
British Airways
Deal found 20/1C$ 142
Sun 7/66:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Fri 12/68:10 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 21/1C$ 144
Tue 14/45:10 p.m.
LHR
-
DUB
Nonstop1h 30m
British Airways
Tue 21/48:25 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 19/1C$ 145
Wed 22/46:15 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Fri 24/48:10 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 19/1C$ 147
Tue 10/38:25 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Sat 14/38:40 p.m.
DUB
-
LHR
Nonstop1h 20m
British Airways
Deal found 21/1C$ 148
Fri 24/46:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Mon 27/48:30 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 21/1C$ 149

Find flight deals from Heathrow to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Dublin (DUB). 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 21 January 2026.

Round-trip from

C$ 129

One-way from

C$ 84

Popular in

June

Cheapest in

January

Average price

C$ 198

Good round-trip deal

C$ 187 or less

Good one-way deal

C$ 533 or less
British Airways
  • British Airways
  • 7/3-9/3
  • Nonstop
  • 2h 50m total
  • London to Dublin
Search Deals
British Airways
  • British Airways
  • 7/3
  • Nonstop
  • 1h 30m total
  • London to Dublin
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 25 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 January 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Dublin.
Search Deals
Price to beat on a one-way flight from London Heathrow to Dublin.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Dublin 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 21 January 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Dublin that are best for you.

Fly from

Heathrow

Fly to

Dublin

Route

Depart

Return

Price

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 26/2

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

Nonstop1h 25m

Dublin

Mon 2/3

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

Nonstop1h 20m

C$ 137

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 19/3

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

Nonstop1h 25m

Dublin

Mon 23/3

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

Nonstop1h 20m

C$ 141

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 24/3

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

Nonstop1h 25m

Dublin

Fri 27/3

8:35 p.m.-9:55 p.m.

Nonstop1h 20m

C$ 142

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 14/4

5:10 p.m.-6:40 p.m.

Nonstop1h 30m

Dublin

Tue 21/4

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

Nonstop1h 15m

C$ 144

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Wed 15/4

6:15 a.m.-7:40 a.m.

Nonstop1h 25m

Dublin

Wed 22/4

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

Nonstop1h 15m

C$ 144

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 10/3

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

Nonstop1h 25m

Dublin

Sat 14/3

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

Nonstop1h 20m

C$ 148

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 21/4

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

Nonstop1h 25m

Dublin

Thu 23/4

8:20 p.m.-9:35 p.m.

Nonstop1h 15m

C$ 149

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 6/3

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

Nonstop1h 25m

Dublin

Fri 13/3

8:35 p.m.-9:55 p.m.

Nonstop1h 20m

C$ 155

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 21/2

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

Nonstop1h 25m

Dublin

Sat 28/2

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

Nonstop1h 35m

C$ 163

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Wed 25/3

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

Nonstop1h 25m

Dublin

Tue 7/4

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

Nonstop1h 35m

C$ 165

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/1

Showing 1-10 of 15 results
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Best time to book a flight from Heathrow to Dublin

Have a flexible travel schedule? Discover the best time to fly to Dublin from Heathrow 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 London Heathrow Airport to Dublin

How far ahead should I book a flight from London Heathrow Airport to Dublin?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Dublin. Price data was last updated on 16 January 2026.

The price you pay for your flight from London Heathrow Airport to Dublin may vary depending on when you book. For the best chance of a lower fare, look to book 87 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 London Heathrow Airport to Dublin?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Dublin (average of C$ 120). Flying from London Heathrow Airport to Dublin in July is currently the most expensive (average of C$ 149). 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 LHR to DUB?

Find hourly flight availability from Heathrow to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 January 2026.

When flying from London Heathrow Airport to Dublin, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 66% versus a flight in the morning.

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated 21 January 2026.
Check out reviews from past customers who have flown with Aer Lingus and British Airways from London Heathrow Airport to Dublin to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,441 reviews
Check prices

Boarding

7.4

Crew

8.0

Overall

7.2

Entertainment

6.9

Food

6.6

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Catherine,Dec 2025

AGP - DUB

Flight out to Malaga was terrific on A330 but flight back on A320 no where as good. Seat was uncomfortable, sweet wrappers & toilet paper on the floor at my seat. Rubbish in holder of seat in front. All unpleasant. Flight itself was fine & crew otherwise very good.
Aer Lingus
7.2
Good
1,441 reviews
Aer Lingus
7.2
Good
1,441 reviews
Check prices

Boarding

7.4

Crew

8.0

Overall

7.2

Entertainment

6.9

Food

6.6

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Catherine,Dec 2025

AGP - DUB

Flight out to Malaga was terrific on A330 but flight back on A320 no where as good. Seat was uncomfortable, sweet wrappers & toilet paper on the floor at my seat. Rubbish in holder of seat in front. All unpleasant. Flight itself was fine & crew otherwise very good.
British Airways
6.7
Okay
7,689 reviews
Aer Lingus
7.2
Good
1,441 reviews
Check prices

Boarding

7.4

Crew

8.0

Overall

7.2

Entertainment

6.9

Food

6.6

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Catherine,Dec 2025

AGP - DUB

Flight out to Malaga was terrific on A330 but flight back on A320 no where as good. Seat was uncomfortable, sweet wrappers & toilet paper on the floor at my seat. Rubbish in holder of seat in front. All unpleasant. Flight itself was fine & crew otherwise very good.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Dublin. 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 into for flights to Dublin from London Heathrow?

    For a flight from London Heathrow to Dublin, you will be flying into Dublin. Dublin (DUB) is just 9.2 km from the centre of the city. Dublin is the only Dublin airport and it handles 46 inbound flights from London Heathrow per day. 2 airlines have flights to Dublin from London Heathrow on a regular basis.

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

    For as low as C$ 137, British Airways can have you in Dublin from London Heathrow Airport in 1h 25m. The distance between London Heathrow Airport and Dublin is about 449 km. All flights are typically direct.

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

    Flying on British Airways is currently your cheapest option to Dublin, with prices starting at C$ 140. Another option worth looking into is Aer Lingus, starting at C$ 210 round trip. British Airways is priced at 40% lower than the current average price of a flight leaving 3 months from now.

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

    Before booking your flight to Dublin from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Japan Airlines (84%), Kenya Airways (84%), Qatar Airways( 75%).

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

    Looking at all options, your cheapest flight can be booked for C$ 146. While the most popular route (London Heathrow - Dublin) can be booked for C$ 524 on average, our data indicates C$ 603 when flying from London Heathrow Airport to Dublin.

  • Can I find deals for flights from Heathrow to Dublin that include hotel bookings?

    Yes. In addition to deals on Heathrow to Dublin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Dublin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Dublin.

  • Can I find deals for business class flights from Heathrow to Dublin?

    Yes. Cheapflights offers flight deals from Heathrow to Dublin 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 London Heathrow Airport to Dublin?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Dublin (average of C$ 120). Flying from London Heathrow Airport to Dublin in July is currently the most expensive (average of C$ 149). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Dublin

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

Top 2 airlines flying from Heathrow to Dublin

Discover the top 2 airlines that operate flights from Heathrow to Dublin. 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 21 January 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 140AverageC$ 192FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapestC$ 210AverageC$ 265FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Dublin. 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 Heathrow to Dublin?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Dublin.

Can Cheapflights find flights from Heathrow to Dublin with no change fees?

Yes, we can. To see specific flights from Heathrow to Dublin with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Heathrow to Dublin become cheaper?

Yes, Cheapflights offers price alerts on Heathrow to Dublin 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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