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Cheap flights from London Heathrow Airport to Dublin from C$ 90

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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DUB
26 Nov — 3 Dec1
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 86 days in advance, depart on a Thursday or Sunday and return on a Wednesday

Cheap 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 27 October 2025.

Round-trip from

C$ 130

One-way from

C$ 90

Popular in

June

Cheapest in

January

Average price

C$ 234

Good round-trip deal

C$ 244 or less

Good one-way deal

C$ 165 or less
British Airways
  • British Airways
  • 11/12-14/12
  • Nonstop
  • 3h 05m total
  • London to Dublin
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British Airways
  • British Airways
  • 11/3
  • Nonstop
  • 1h 30m total
  • London to Dublin
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 24 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 7 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from London Heathrow to Dublin.
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Price to beat on a one-way flight from London Heathrow to Dublin.
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Find 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 27 October 2025.

Thu 11/123:30 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Sun 14/1210:45 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 25/10C$ 130
Thu 11/123:30 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Sat 13/121:10 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Deal found 25/10C$ 134
Sat 6/126:25 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Tue 9/128:50 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 26/10C$ 136
Wed 3/123:30 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Tue 9/128:50 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 27/10C$ 137
Sat 6/123:30 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Mon 8/128:50 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 27/10C$ 139
Thu 11/126:20 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Fri 12/1210:45 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 25/10C$ 140
Wed 10/126:15 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Wed 17/1210:20 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 26/10C$ 143
Sat 22/113:30 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Wed 3/121:10 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Deal found 25/10C$ 144
Tue 25/111:55 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Tue 2/1210:55 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 26/10C$ 147
Tue 25/111:55 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Mon 1/128:50 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 25/10C$ 150

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 27 October 2025.
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

Tue 13/1

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

Nonstop1h 25m

Dublin

Tue 20/1

1:25 p.m.-2:50 p.m.

Nonstop1h 25m

C$ 137

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 11/12

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

Nonstop1h 30m

Dublin

Fri 12/12

10:45 a.m.-12:20 p.m.

Nonstop1h 35m

C$ 140

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Wed 3/12

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

Nonstop1h 25m

Dublin

Wed 3/12

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

Nonstop1h 35m

C$ 147

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 12/12

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

Nonstop1h 25m

Dublin

Sun 14/12

10:45 a.m.-12:20 p.m.

Nonstop1h 35m

C$ 164

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 27/2

6:25 p.m.-7:50 p.m.

Nonstop1h 25m

Dublin

Sun 1/3

10:45 a.m.-12:20 p.m.

Nonstop1h 35m

C$ 164

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Wed 22/4

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

Nonstop1h 25m

Dublin

Sat 25/4

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

Nonstop1h 20m

C$ 182

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Wed 26/11

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

Nonstop1h 25m

Dublin

Sat 29/11

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

Nonstop1h 20m

C$ 186

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 28/3

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

Nonstop1h 25m

Dublin

Sat 28/3

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

Nonstop1h 20m

C$ 186

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 4/12

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

Nonstop1h 25m

Dublin

Fri 5/12

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

Nonstop1h 25m

C$ 202

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sun 22/3

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

Nonstop1h 25m

Dublin

Sun 22/3

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

Nonstop1h 20m

C$ 206

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/10

Showing 1-10 of 21 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 24 October 2025.

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 86 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Dublin (average of C$ 113). Flying from London Heathrow Airport to Dublin in August is currently the most expensive (average of C$ 150). 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 27 October 2025.

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 69% 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 27 October 2025.
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
1,360 reviews
Check prices

Entertainment

6.9

Food

6.6

Comfort

7.1

Boarding

7.4

Overall

7.2

Crew

8.0

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.
Aer Lingus
7.2
Good
1,360 reviews
Aer Lingus
7.2
Good
1,360 reviews
Check prices

Entertainment

6.9

Food

6.6

Comfort

7.1

Boarding

7.4

Overall

7.2

Crew

8.0

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.
British Airways
6.7
Okay
7,476 reviews
Aer Lingus
7.2
Good
1,360 reviews
Check prices

Entertainment

6.9

Food

6.6

Comfort

7.1

Boarding

7.4

Overall

7.2

Crew

8.0

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.

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 42 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$ 139. Another option worth looking into is Aer Lingus, starting at C$ 179 round trip. British Airways is priced at 41% 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: Air Canada (71%), LATAM Airlines (70%), Qatar Airways( 67%).

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

    Looking at all options, your cheapest flight can be booked for C$ 127. While the most popular route (London Heathrow - Dublin) can be booked for C$ 530 on average, our data indicates C$ 813 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Dublin (average of C$ 113). Flying from London Heathrow Airport to Dublin in August is currently the most expensive (average of C$ 150). 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

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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 27 October 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 139AverageC$ 194FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapestC$ 179AverageC$ 268FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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

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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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