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Cheap flights from London Heathrow Airport to Dublin from $99

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Dublin departing on 9/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Dublin (LHR-DUB)

Cheap return flights

British Airways Logo
16:50 - 18:20LHR-DUB
1h 30mdirect
British Airways Logo
10:50 - 12:30DUB-LHR
1h 40mdirect
$155British Airways
Find Deal
Tue, 23 Sep - Wed, 24 Sep
British Airways Logo
06:15 - 07:40LHR-DUB
1h 25mdirect
British Airways Logo
08:30 - 10:05DUB-LHR
1h 35mdirect
$156British Airways
Find Deal
Sat, 13 Sep - Wed, 17 Sep
British Airways Logo
06:15 - 07:40LHR-DUB
1h 25mdirect
British Airways Logo
10:50 - 12:30DUB-LHR
1h 40mdirect
$158British Airways
Find Deal
Sat, 13 Sep - Wed, 17 Sep
British Airways Logo
06:20 - 07:45LHR-DUB
1h 25mdirect
British Airways Logo
08:30 - 10:05DUB-LHR
1h 35mdirect
$164British Airways
Find Deal
Fri, 12 Sep - Wed, 17 Sep
British Airways Logo
08:25 - 09:50LHR-DUB
1h 25mdirect
British Airways Logo
13:25 - 14:50DUB-LHR
1h 25mdirect
$165British Airways
Find Deal
Fri, 2 Jan - Tue, 13 Jan
British Airways Logo
06:15 - 07:40LHR-DUB
1h 25mdirect
British Airways Logo
10:55 - 12:30DUB-LHR
1h 35mdirect
$167British Airways
Find Deal
Wed, 17 Sep - Wed, 17 Sep
British Airways Logo
06:20 - 07:45LHR-DUB
1h 25mdirect
British Airways Logo
10:25 - 12:00DUB-LHR
1h 35mdirect
$169British Airways
Find Deal
Tue, 23 Sep - Tue, 23 Sep
British Airways Logo
06:20 - 07:45LHR-DUB
1h 25mdirect
British Airways Logo
10:25 - 12:00DUB-LHR
1h 35mdirect
$170British Airways
Find Deal
Thu, 11 Sep - Tue, 16 Sep
British Airways Logo
18:05 - 19:30LHR-DUB
1h 25mdirect
British Airways Logo
10:25 - 12:00DUB-LHR
1h 35mdirect
$172British Airways
Find Deal
Wed, 10 Sep - Tue, 16 Sep
British Airways Logo
18:05 - 19:30LHR-DUB
1h 25mdirect
British Airways Logo
08:30 - 10:05DUB-LHR
1h 35mdirect
$173British Airways
Find Deal
Wed, 10 Sep - Wed, 17 Sep

British Airways flights from London Heathrow Airport to Dublin

Our best British Airways deals on London Heathrow Airport to Dublin flight tickets
British Airways
23 Sept
LHR16:50London Heathrow
1h 30m
DUB18:20Dublin
24 Sept
DUB10:50Dublin
1h 40m
LHR12:30London Heathrow
$155
Find similar
British Airways
13 Sept
LHR06:15London Heathrow
1h 25m
DUB07:40Dublin
17 Sept
DUB08:30Dublin
1h 35m
LHR10:05London Heathrow
$156
Find similar
British Airways
13 Sept
LHR06:15London Heathrow
1h 25m
DUB07:40Dublin
17 Sept
DUB10:50Dublin
1h 40m
LHR12:30London Heathrow
$158
Find similar

KLM flights from London Heathrow Airport to Dublin

Our best KLM deals on London Heathrow Airport to Dublin flight tickets
KLM
20 Aug
LHR08:40London Heathrow
3h 55m
1 stop
DUB12:35Dublin
26 Aug
DUB13:20Dublin
4h 15m
1 stop
LHR17:35London Heathrow
$363
Find similar
KLM
20 Aug
LHR08:40London Heathrow
3h 55m
1 stop
DUB12:35Dublin
27 Aug
DUB13:20Dublin
4h 15m
1 stop
LHR17:35London Heathrow
$377
Find similar
KLM
14 Aug
LHR06:30London Heathrow
3h 55m
1 stop
DUB10:25Dublin
20 Aug
DUB13:20Dublin
4h 15m
1 stop
LHR17:35London Heathrow
$410
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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, momondo users made 78,305 searches. Data last updated 6 August 2025.
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

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 23/9

16:50-18:20

Nonstop1h 30m

Dublin

Wed 24/9

10:50-12:30

Nonstop1h 40m

$155

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 13/9

06:15-07:40

Nonstop1h 25m

Dublin

Wed 17/9

08:30-10:05

Nonstop1h 35m

$156

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 13/9

06:15-07:40

Nonstop1h 25m

Dublin

Wed 17/9

10:50-12:30

Nonstop1h 40m

$158

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 12/9

06:20-07:45

Nonstop1h 25m

Dublin

Wed 17/9

08:30-10:05

Nonstop1h 35m

$164

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 2/1

08:25-09:50

Nonstop1h 25m

Dublin

Tue 13/1

13:25-14:50

Nonstop1h 25m

$165

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Wed 17/9

06:15-07:40

Nonstop1h 25m

Dublin

Wed 17/9

10:55-12:30

Nonstop1h 35m

$167

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 23/9

06:20-07:45

Nonstop1h 25m

Dublin

Tue 23/9

10:25-12:00

Nonstop1h 35m

$169

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 11/9

06:20-07:45

Nonstop1h 25m

Dublin

Tue 16/9

10:25-12:00

Nonstop1h 35m

$170

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Wed 10/9

18:05-19:30

Nonstop1h 25m

Dublin

Tue 16/9

10:25-12:00

Nonstop1h 35m

$172

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Wed 10/9

18:05-19:30

Nonstop1h 25m

Dublin

Wed 17/9

08:30-10:05

Nonstop1h 35m

$173

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Dublin from

How to get the cheapest flight ticket from London Heathrow Airport to Dublin

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Heathrow Airport and Dublin?

What is the cheapest month to fly to Dublin?

The month of January is, on average, the cheapest month to fly to Dublin from London Heathrow Airport, with most prices found around $218. If you are unable to visit Dublin during the month of January, then departing from London Heathrow Airport during the month February is also very affordable. Most momondo users find prices during this month for around $227.

What is the cheapest day to depart on your flight to Dublin?

The cheapest day to depart from London Heathrow Airport to Dublin is on a Thursday. Travellers who choose to depart for Dublin on a Thursday will often find tickets for as low as $129. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Dublin for around $198.

What is the cheapest time of day to depart on your flight to Dublin?

In the evening is the cheapest time of day to fly from London Heathrow Airport to Dublin when you can find flight prices for as low as $124. Flying to Dublin in the evening is an ideal time because this is during off-peak travel hours. Flights to Dublin are more costly at midday, with an average ticket price of $204. Departure times at midday fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest London Heathrow to Dublin flight route?

Fly from London Heathrow to Dublin for the best London Heathrow - Dublin flight prices

How far in advance should I book a flight to Dublin?

You are more likely to see cheaper flights to Dublin from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around $253 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from London Heathrow Airport for as low as $189 on momondo.

What cabin class options are available on London Heathrow to Dublin flights?

There are 3 cabin classes available to choose from on London Heathrow to Dublin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have London Heathrow Airport to Dublin flight prices changed over time?

As of August 2025, prices for London Heathrow Airport to Dublin flights are approximately 43% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Dublin

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Dublin according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Dublin (LHR to DUB) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Dublin

Best price found

$99

Fastest flight time

1h 10m

Direct flights

Every day

Airports in Dublin

1 airport
The best one-way flight to Dublin from London Heathrow Airport in the past 72 hours is $99. The best return flight deal from London Heathrow Airport to Dublin found on momondo in the last 72 hours is $155.
The fastest flight from London Heathrow Airport to Dublin takes 1h 10m
Direct flights go from London Heathrow Airport to Dublin every day.
There is 1 airport near Dublin: Dublin (DUB)
Search flight deals

  • How far is London Heathrow to Dublin by plane?

    London Heathrow and Dublin are 445.0 km apart from one another. In terms of flight time, this usually takes a little over 1h 20m.

  • When did momondo last update prices for flights from London Heathrow Airport to Dublin Airport?

    Prices for flights from London Heathrow Airport to Dublin Airport refresh daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Dublin Airport?

  • How old do you have to be to fly from London Heathrow Airport to Dublin Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Dublin Airport.

  • What documentation or ID do you need to fly to Dublin Airport?

    The travel and health documents required for your trip to Dublin Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Dublin Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from London Heathrow Airport to Dublin?

  • What is the most popular airline from London Heathrow Airport to Dublin?

Best airlines flying from London Heathrow Airport to Dublin

Compare and see reviews for airlines that fly from London Heathrow Airport to Dublin with momondo
Airline
Rating
Free cancellation
Price
British AirwaysPriceFrom $108Free cancellationRating
6.6
7,237 reviews
Search British Airways flights
Aer LingusPriceFrom $201Free cancellationRating
7.1
1,197 reviews
Search Aer Lingus flights

  • Aer Lingus Flights From London Heathrow Airport to Dublin

    Aer Lingus flight deals from London Heathrow Airport to Dublin start from $130 round-trip. Over the 90 Aer Lingus flights for this route in a normal week, average airfare is usually $161 round-trip - but some users have found much cheaper deals with momondo.

  • British Airways Flights From London Heathrow Airport to Dublin

    British Airways (6.6/10 from 7,237 reviews) operates around 89 flights from London Heathrow Airport to Dublin in any given week. The average British Airways airfare for this route is around $111, with deals from around $70 rare but found on momondo. Referenced prices are for round-trip London Heathrow Airport to Dublin flight searches in the last 72 hours.

Travelling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Athlone
Kilkenny
Castleknock
Cavan
Malahide
Swords

Why use momondo?

Why should I use momondo to find a flight deal from London to Dublin?

Finding the right flight to Dublin from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Dublin quick and easy, saving you time and money.

Can I find flights from London to Dublin with flexible booking policies on momondo?

All flight searches from London to Dublin on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from London to Dublin?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Dublin.

I’m not ready to book a flight from London to Dublin right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Dublin flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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