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Cheap flights from London Heathrow Airport to Dublin from $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 3/1. 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 Wednesday or Tuesday and return on a Tuesday

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 26/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Fri 26/1220:35DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 10/12$206
Mon 29/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Thu 1/108:50DUB - LHR
Nonstop1h 35mBritish Airways
Deal found 10/12$224
Sun 28/1218:20LHR - DUB
Nonstop1h 25mBritish Airways
Sun 4/120:40DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 10/12$252
Thu 18/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Sat 20/1216:05DUB - LHR
Nonstop1h 25mBritish Airways
Deal found 11/12$257
Wed 24/1206:30LHR - DUB
Nonstop1h 25mBritish Airways
Fri 26/1220:35DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 11/12$260
Fri 12/1218:25LHR - DUB
Nonstop1h 25mBritish Airways
Sun 14/1215:55DUB - LHR
Nonstop1h 25mBritish Airways
Deal found 11/12$263
Sat 13/1218:25LHR - DUB
Nonstop1h 25mBritish Airways
Wed 17/1220:40DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 10/12$266
Sun 28/1217:10LHR - DUB
Nonstop1h 30mBritish Airways
Wed 31/1220:40DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 10/12$269
Mon 15/1215:20LHR - DUB
Nonstop1h 30mBritish Airways
Wed 24/1220:40DUB - LHR
Nonstop1h 20mBritish Airways
Deal found 9/12$270

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

$131

One-way from

$90

Popular in

December

Cheapest in

January

Average price

$300

Good round-trip deal

$201 or less

Good one-way deal

$159 or less
British Airways
  • British Airways
  • 10/1-17/1
  • Nonstop
  • 2h 55m total
  • London to Dublin
Search Deals
British Airways
  • British Airways
  • 3/1
  • 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 ($8 potential savings vs. average return 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

 
Customise 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 647,157 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

Fri 23/1

06:30-07:55

Nonstop1h 25m

Dublin

Sun 25/1

20:40-22:00

Nonstop1h 20m

$153

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 13/1

15:35-17:05

Nonstop1h 30m

Dublin

Thu 15/1

08:50-10:25

Nonstop1h 35m

$164

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Sat 10/1

06:30-07:55

Nonstop1h 25m

Dublin

Mon 12/1

20:40-22:00

Nonstop1h 20m

$179

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Tue 24/3

06:30-07:55

Nonstop1h 25m

Dublin

Fri 27/3

20:35-21:55

Nonstop1h 20m

$180

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 12/3

06:30-07:55

Nonstop1h 25m

Dublin

Mon 16/3

20:40-22:00

Nonstop1h 20m

$198

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Mon 5/1

15:20-16:50

Nonstop1h 30m

Dublin

Thu 8/1

08:50-10:25

Nonstop1h 35m

$198

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Thu 8/1

06:30-07:55

Nonstop1h 25m

Dublin

Sun 11/1

19:25-20:45

Nonstop1h 20m

$207

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Wed 27/5

17:20-18:50

Nonstop1h 30m

Dublin

Wed 10/6

20:20-21:40

Nonstop1h 20m

$210

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 29/5

06:20-07:45

Nonstop1h 25m

Dublin

Sat 6/6

18:45-20:00

Nonstop1h 15m

$210

LondonDublin

LHR - DUB

LHRDUB

London Heathrow

Fri 29/5

06:20-07:45

Nonstop1h 25m

Dublin

Tue 9/6

20:20-21:40

Nonstop1h 20m

$210

Flights are sorted by cheapest return flights first.

Deals found on 11/12

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 return 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 return flight from Heathrow to Dublin. Price data was last updated on 5 December 2025.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Dublin, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $131). Flying from London Heathrow Airport to Dublin in August is currently the most expensive (average of $161). 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.

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Dublin in the morning. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from London Heathrow Airport to Dublin?

Use this chart to determine the cheapest time to fly return from Heathrow to Dublin. Price data was last updated on 6 December 2025.

Travellers seeking maximum savings on their London Heathrow Airport to Dublin flight should consider departing on Saturday evenings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost for a return flight 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.
See what other customers who have flown with Aer Lingus and British Airways from London Heathrow Airport to Dublin have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,394 reviews
Check prices

Comfort

7.1

Boarding

7.4

Food

6.6

Crew

8.0

Entertainment

7.0

Overall

7.2

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
1,394 reviews
Aer Lingus
7.2
Good
1,394 reviews
Check prices

Comfort

7.1

Boarding

7.4

Food

6.6

Crew

8.0

Entertainment

7.0

Overall

7.2

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
1,394 reviews
Check prices

Comfort

7.1

Boarding

7.4

Food

6.6

Crew

8.0

Entertainment

7.0

Overall

7.2

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?

    Most people fly into Dublin (DUB) if they book a flight to Dublin from London Heathrow. On average, Dublin has 43 inbound flights from London Heathrow per day from 2 airlines. Dublin is conveniently located just 9.2 km from Dublin’s city centre.

  • How long is the flight from London Heathrow Airport to Dublin?

    For as low as $153, British Airways can have you in Dublin from London Heathrow Airport in 1h 25m. London Heathrow Airport and Dublin are separated by a distance of 449 km. Most flights are nonstop.

  • What are the cheapest airlines flying from London Heathrow Airport to Dublin round-trip?

    Currently priced at $122, British Airways will fly you from London Heathrow Airport to Dublin and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Aer Lingus for as low as $210. Users have found that British Airways is 52% cheaper than the other options available to this destination.

  • What are the most reliable airlines from London Heathrow Airport to Dublin?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London Heathrow Airport to Dublin on time: Kenya Airways (80%), LATAM Airlines (79%), Air Canada (77%).

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

    Looking for the cheapest flight from London Heathrow Airport to Dublin? While on average our users pay $210, our data indicates the cheapest price to be $141. The most popular route (London Heathrow - Dublin), is priced around $308.

  • 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 holiday 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 $131). Flying from London Heathrow Airport to Dublin in August is currently the most expensive (average of $161). 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 647,157 searches. Data last updated 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$122Average$187FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest$210Average$276FlexibilityNo 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?

Cheapflights makes it easy to find Heathrow to Dublin flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Dublin?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dublin from Heathrow.

Can Cheapflights find flights from Heathrow to Dublin with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Dublin, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Heathrow to Dublin become cheaper?

Yes! Start tracking prices for Heathrow to Dublin flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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