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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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DUB
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to Dublin are usually found in January or October, 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 12 December 2025.

Fri 26/126:30 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Fri 26/128:35 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 10/12C$ 189
Mon 29/126:30 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Thu 1/18:50 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 10/12C$ 205
Sun 28/126:20 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Sun 4/18:40 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 10/12C$ 232
Thu 18/126:30 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Sat 20/124:05 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Deal found 11/12C$ 236
Wed 24/126:30 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Fri 26/128:35 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 11/12C$ 239
Fri 12/126:25 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Sun 14/123:55 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Deal found 11/12C$ 241
Sat 13/126:25 p.m.LHR - DUB
Nonstop1h 25mBritish Airways
Wed 17/128:40 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 10/12C$ 244
Sun 28/125:10 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Wed 31/128:40 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 10/12C$ 247
Mon 15/123:20 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Wed 24/128:40 p.m.DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 9/12C$ 248

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 12 December 2025.

Round-trip from

C$ 132

One-way from

C$ 90

Popular in

December

Cheapest in

January

Average price

C$ 276

Good round-trip deal

C$ 557 or less

Good one-way deal

C$ 174 or less
British Airways
  • British Airways
  • 24/1-31/1
  • Nonstop
  • 2h 45m total
  • London to Dublin
Search Deals
British Airways
  • British Airways
  • 7/3
  • Nonstop
  • 1h 25m total
  • London to Dublin
Search Deals
High demand for flights, 2% potential price rise
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 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 12 December 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

Sat 17/1

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

Nonstop1h 30m

Dublin

Mon 19/1

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

Nonstop1h 20m

C$ 135

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 16/1

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

Nonstop1h 25m

Dublin

Mon 19/1

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

Nonstop1h 20m

C$ 135

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Mon 26/1

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

Nonstop1h 30m

Dublin

Wed 28/1

8:50 a.m.-10:25 a.m.

Nonstop1h 35m

C$ 139

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 23/1

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

Nonstop1h 25m

Dublin

Sun 25/1

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

Nonstop1h 20m

C$ 141

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 13/1

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

Nonstop1h 30m

Dublin

Thu 15/1

8:50 a.m.-10:25 a.m.

Nonstop1h 35m

C$ 150

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 24/1

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

Nonstop1h 25m

Dublin

Sat 31/1

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

Nonstop1h 25m

C$ 177

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 12/3

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

Nonstop1h 25m

Dublin

Mon 16/3

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

Nonstop1h 20m

C$ 182

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Mon 5/1

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

Nonstop1h 30m

Dublin

Thu 8/1

8:50 a.m.-10:25 a.m.

Nonstop1h 35m

C$ 182

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 28/5

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

Nonstop1h 25m

Dublin

Mon 8/6

8:55 p.m.-10:15 p.m.

Nonstop1h 20m

C$ 193

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 30/5

5:55 p.m.-7:20 p.m.

Nonstop1h 25m

Dublin

Tue 9/6

8:20 p.m.-9:40 p.m.

Nonstop1h 20m

C$ 193

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 22 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 5 December 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 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 August is currently the most expensive (average of C$ 148). 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 12 December 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 67% versus a flight in the morning.

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

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 12 December 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
1,392 reviews
Check prices

Boarding

7.4

Food

6.6

Comfort

7.1

Entertainment

6.9

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
1,392 reviews
Aer Lingus
7.2
Good
1,392 reviews
Check prices

Boarding

7.4

Food

6.6

Comfort

7.1

Entertainment

6.9

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
7,571 reviews
Aer Lingus
7.2
Good
1,392 reviews
Check prices

Boarding

7.4

Food

6.6

Comfort

7.1

Entertainment

6.9

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 43 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$ 135, British Airways can have you in Dublin from London Heathrow Airport in 1h 30m. 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$ 137. Another option worth looking into is Aer Lingus, starting at C$ 210 round trip. British Airways is priced at 42% 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: Kenya Airways (80%), LATAM Airlines (79%), Air Canada( 77%).

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

    Looking at all options, your cheapest flight can be booked for C$ 100. While the most popular route (London Heathrow - Dublin) can be booked for C$ 523 on average, our data indicates C$ 590 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 August is currently the most expensive (average of C$ 148). 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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 137AverageC$ 190FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapestC$ 210AverageC$ 264FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

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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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