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Cheap flights from London Heathrow Airport to Dublin

LHR — DUB
25 Aug — 1 Sep1
1 adult

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 Friday or Thursday and return on a Thursday

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 20 August 2025.

Popular in

June

Cheapest in

January

Average price

₹ 16,202

Good round-trip deal

₹ 39,502 or less

Good one-way deal

₹ 32,529 or less
Highest demand for flights based on searches. 8% potential increase in price (₹ 111,189 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (₹ 21,741 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from London Heathrow to Dublin.
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Price to beat on a one-way flight from London Heathrow to Dublin.
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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 8 August 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 66 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, October is the cheapest month in which you can book a flight from London Heathrow Airport to Dublin (average of ₹ 616). Flying from London Heathrow Airport to Dublin in August is currently the most expensive (average of ₹ 779). 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 20 August 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 73% on flights from London Heathrow Airport to Dublin by exploring options for tickets in the afternoon.

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 20 August 2025.
Get a feel of what it's like to fly with Aer Lingus and British Airways from London Heathrow Airport to Dublin by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,225 reviews
Check prices

Overall

7.2

Comfort

7.1

Entertainment

6.9

Food

6.5

Boarding

7.3

Crew

8.0

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
1,225 reviews
Aer Lingus
7.2
Good
1,225 reviews
Check prices

Overall

7.2

Comfort

7.1

Entertainment

6.9

Food

6.5

Boarding

7.3

Crew

8.0

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
7,289 reviews
Aer Lingus
7.2
Good
1,225 reviews
Check prices

Overall

7.2

Comfort

7.1

Entertainment

6.9

Food

6.5

Boarding

7.3

Crew

8.0

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?

    If you book a flight to Dublin from London Heathrow, you will be flying to Dublin, which is the city’s only airport. Dublin (DUB) is located 9.2 km from the centre of Dublin. There are 50 flights from London Heathrow to Dublin per day from 2 different airlines.

  • 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 ₹ 7,436. Another option worth looking into is Aer Lingus, starting at ₹ 13,237 round trip. You may be able to fly from London Heathrow Airport to Dublin for 48% less than the average price by searching for these airlines.

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

    Consider Air Canada (85%), LATAM Airlines (79%) or Qatar Airways (77%) when booking your flight. These represent the most reliable airlines 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 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, October is the cheapest month in which you can book a flight from London Heathrow Airport to Dublin (average of ₹ 616). Flying from London Heathrow Airport to Dublin in August is currently the most expensive (average of ₹ 779). 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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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 454,620 searches. Data last updated 20 August 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest₹ 7,436Average₹ 10,991FlexibilityNo cancel feeOn-time70%
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Aer LingusCheapest₹ 13,237Average₹ 18,229FlexibilityNo cancel feeOn-timeN/A
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Fly with Cheapflights

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

Cheapflights helps you search for flights from Heathrow to Dublin via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights helps you find that perfect flight to Dublin from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Heathrow to Dublin with no change fees.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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