Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Dublin from C$ 91

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 31/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DUB
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from London Heathrow to Dublin are usually found in January or February, booked 66 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 11 September 2025.

Round-trip from

C$ 122

One-way from

C$ 91

Popular in

June

Cheapest in

January

Average price

C$ 212

Good round-trip deal

C$ 197 or less

Good one-way deal

C$ 527 or less
British Airways
  • British Airways
  • 1/11-3/11
  • Nonstop
  • 3h 05m total
  • London to Dublin
Search Deals
British Airways
  • British Airways
  • 31/12
  • Nonstop
  • 1h 30m total
  • London to Dublin
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 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

Find flight deals from Heathrow to Dublin

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 11 September 2025.

Sat 1/111:35 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Mon 3/1110:45 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 11/9C$ 122
Fri 17/106:20 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Mon 20/1011:05 a.m.DUB - LHR
Nonstop1h 30mBritish Airways
Deal found 11/9C$ 127
Wed 22/106:15 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Thu 6/111:10 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Deal found 10/9C$ 137
Fri 10/106:20 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Mon 13/1010:30 a.m.DUB - LHR
Nonstop1h 30mBritish Airways
Deal found 10/9C$ 143
Wed 29/106:30 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Wed 5/1110:20 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 10/9C$ 144
Tue 28/106:30 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Wed 5/1110:20 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 10/9C$ 146
Fri 10/106:20 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Tue 14/1010:30 a.m.DUB - LHR
Nonstop1h 30mBritish Airways
Deal found 11/9C$ 148
Wed 12/118:10 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Wed 19/111:10 p.m.DUB - LHR
Nonstop1h 25mBritish Airways
Deal found 11/9C$ 150
Tue 28/106:30 a.m.LHR - DUB
Nonstop1h 25mBritish Airways
Mon 3/1110:45 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 10/9C$ 152
Fri 14/113:55 p.m.LHR - DUB
Nonstop1h 30mBritish Airways
Mon 17/1110:45 a.m.DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 11/9C$ 154

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 11 September 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

Mon 3/11

10:45 a.m.-12:15 p.m.

Nonstop1h 30m

Dublin

Wed 5/11

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

Nonstop1h 25m

C$ 122

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Mon 5/1

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

Nonstop1h 25m

Dublin

Wed 7/1

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

Nonstop1h 35m

C$ 122

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Wed 12/11

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

Nonstop1h 25m

Dublin

Tue 18/11

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

Nonstop1h 35m

C$ 137

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 10/10

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

Nonstop1h 25m

Dublin

Mon 13/10

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

Nonstop1h 30m

C$ 143

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 31/10

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

Nonstop1h 25m

Dublin

Wed 5/11

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

Nonstop1h 35m

C$ 144

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 6/2

12:40 p.m.-2:10 p.m.

Nonstop1h 30m

Dublin

Sun 8/2

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

Nonstop1h 20m

C$ 146

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 10/10

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

Nonstop1h 25m

Dublin

Wed 15/10

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

Nonstop1h 40m

C$ 157

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 6/2

12:40 p.m.-2:10 p.m.

Nonstop1h 30m

Dublin

Sat 14/2

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

Nonstop1h 25m

C$ 162

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 22/11

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

Nonstop1h 25m

Dublin

Fri 28/11

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

Nonstop1h 25m

C$ 162

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 16/10

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

Nonstop1h 25m

Dublin

Thu 16/10

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

Nonstop1h 30m

C$ 164

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 23 results
1
2
3

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 29 August 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 66 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$ 458). Flying from London Heathrow Airport to Dublin in December is currently the most expensive (average of C$ 760). 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 11 September 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 70% 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 11 September 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
1,271 reviews
Check prices

Entertainment

6.9

Boarding

7.3

Comfort

7.1

Crew

8.0

Overall

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
Aer Lingus
7.2
Good
1,271 reviews
Aer Lingus
7.2
Good
1,271 reviews
Check prices

Entertainment

6.9

Boarding

7.3

Comfort

7.1

Crew

8.0

Overall

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
British Airways
6.7
Okay
7,361 reviews
Aer Lingus
7.2
Good
1,271 reviews
Check prices

Entertainment

6.9

Boarding

7.3

Comfort

7.1

Crew

8.0

Overall

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.

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 51 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$ 122, 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$ 213 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: Air Canada (82%), LATAM Airlines (80%), Qatar Airways( 76%).

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

    Looking at all options, your cheapest flight can be booked for C$ 131. While the most popular route (London Heathrow - Dublin) can be booked for C$ 525 on average, our data indicates C$ 516 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$ 458). Flying from London Heathrow Airport to Dublin in December is currently the most expensive (average of C$ 760). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 137AverageC$ 189FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapestC$ 213AverageC$ 266FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.