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Cheap flights from London Heathrow Airport to Dublin from C$ 89

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DUB
17 May — 24 May1
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 56 days in advance, depart on a Sunday or Thursday and return on a Monday

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 17 April 2026.

Mon 27/76:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Fri 31/78:10 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 16/4C$ 154
Tue 14/76:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Tue 21/78:25 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 16/4C$ 155
Fri 24/76:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Tue 28/78:25 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 16/4C$ 156
Fri 29/56:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Tue 2/68:25 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 16/4C$ 158
Tue 15/96:10 p.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Tue 22/98:25 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 15/4C$ 159
Mon 14/96:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Mon 14/98:30 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 13/4C$ 160
Sun 20/96:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Mon 21/98:30 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 13/4C$ 162
Mon 8/66:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Tue 16/68:25 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 13/4C$ 163
Sun 14/66:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Tue 16/68:25 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 16/4C$ 165
Tue 25/86:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Tue 1/97:30 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 12/4C$ 166
Tue 1/126:30 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Fri 4/128:35 p.m.
DUB
-
LHR
Nonstop1h 20m
British Airways
Deal found 13/4C$ 167
Sun 7/66:20 a.m.
LHR
-
DUB
Nonstop1h 25m
British Airways
Wed 12/87:45 p.m.
DUB
-
LHR
Nonstop1h 15m
British Airways
Deal found 12/4C$ 169

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 17 April 2026.

Round-trip from

C$ 154

One-way from

C$ 89

Popular in

June

Cheapest in

January

Average price

C$ 263

Good round-trip deal

C$ 297 or less

Good one-way deal

C$ 610 or less
British Airways
  • British Airways
  • 27/7-31/7
  • Nonstop
  • 2h 40m total
  • London to Dublin
Search Deals
British Airways
  • British Airways
  • 15/6
  • Nonstop
  • 1h 25m total
  • London to Dublin
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 30 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 April 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 17 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Dublin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 11/6

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

Nonstop1h 25m

Dublin

Sat 13/6

8:15 p.m.-9:30 p.m.

Nonstop1h 15m

C$ 165

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 4/8

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

Nonstop1h 25m

Dublin

Wed 19/8

7:45 p.m.-9:00 p.m.

Nonstop1h 15m

C$ 165

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sun 19/7

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

Nonstop1h 30m

Dublin

Tue 21/7

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

Nonstop1h 15m

C$ 167

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Mon 1/6

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

Nonstop1h 25m

Dublin

Mon 8/6

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

Nonstop1h 15m

C$ 171

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 4/8

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

Nonstop1h 25m

Dublin

Tue 11/8

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

Nonstop1h 35m

C$ 178

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Mon 1/6

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

Nonstop1h 25m

Dublin

Sat 6/6

6:45 p.m.-8:00 p.m.

Nonstop1h 15m

C$ 181

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 9/6

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

Nonstop1h 30m

Dublin

Thu 11/6

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

Nonstop1h 15m

C$ 192

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 1/5

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

Nonstop1h 25m

Dublin

Sat 2/5

6:45 p.m.-8:00 p.m.

Nonstop1h 15m

C$ 195

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 25/7

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

Nonstop1h 25m

Dublin

Sat 1/8

8:15 p.m.-9:30 p.m.

Nonstop1h 15m

C$ 198

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 2/5

4:20 p.m.-5:50 p.m.

Nonstop1h 30m

Dublin

Sat 9/5

8:15 p.m.-9:30 p.m.

Nonstop1h 15m

C$ 199

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 23 resultsSorted by cheapest first
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 10 April 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 56 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$ 195). Flying from London Heathrow Airport to Dublin in June is currently the most expensive (average of C$ 283). 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 17 April 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 71% versus a flight in the evening.

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 17 April 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
7.3
Good
1,512 reviews
Check prices

Food

6.6

Crew

8.1

Overall

7.3

Boarding

7.4

Entertainment

7.0

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Wendy,Mar 2026

YYZ - DUB

I didn’t happen, my seat was given away because even though my bag was checked through to Dublin apparently the previous airline didn’t check me in. Even when I asked specifically at check in they said I and my luggage we both checked all the way through.
Aer Lingus
7.3
Good
1,512 reviews
Aer Lingus
7.3
Good
1,512 reviews
Check prices

Food

6.6

Crew

8.1

Overall

7.3

Boarding

7.4

Entertainment

7.0

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Wendy,Mar 2026

YYZ - DUB

I didn’t happen, my seat was given away because even though my bag was checked through to Dublin apparently the previous airline didn’t check me in. Even when I asked specifically at check in they said I and my luggage we both checked all the way through.
British Airways
6.7
Okay
7,889 reviews
Aer Lingus
7.3
Good
1,512 reviews
Check prices

Food

6.6

Crew

8.1

Overall

7.3

Boarding

7.4

Entertainment

7.0

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Wendy,Mar 2026

YYZ - DUB

I didn’t happen, my seat was given away because even though my bag was checked through to Dublin apparently the previous airline didn’t check me in. Even when I asked specifically at check in they said I and my luggage we both checked all the way through.

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 59 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$ 163, 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$ 143. Another option worth looking into is Aer Lingus, starting at C$ 175 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 (88%), Japan Airlines (86%), Kenya Airways( 86%).

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

    Looking at all options, your cheapest flight can be booked for C$ 161. While the most popular route (London Heathrow - Dublin) can be booked for C$ 520 on average, our data indicates C$ 563 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$ 195). Flying from London Heathrow Airport to Dublin in June is currently the most expensive (average of C$ 283). 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 Dublin?

Book flights to Dublin if you plan to visit one of these locations
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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 17 April 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 143AverageC$ 193FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapestC$ 175AverageC$ 294FlexibilityNo 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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