How far in advance should I book tickets for a flight with Aer Lingus from London Heathrow Airport to Dublin?

Generally, when trying to get a below-average price for your ticket, try to book around 17 days before departure. For the cheapest possible price, our data suggests booking 0 days before departure.

Is Aer Lingus the cheapest airline to fly with from London Heathrow Airport to Dublin?

With an average price of £148 return, Aer Lingus is not the cheapest airline to fly from London Heathrow Airport to Dublin with. Instead, for the lowest price, our data suggests flying with Ryanair, where a return flight costs £67 on average.

Does Aer Lingus fly direct to Dublin from London Heathrow Airport?

Yes, Aer Lingus does offer direct flights for the route, with around 87 flights per week.

What’s the cheapest day of the week to fly from London Heathrow Airport to Dublin with Aer Lingus?

On average, the cheapest day of the week to fly from London Heathrow Airport to Dublin with Aer Lingus is Monday, when prices are around £57. The most expensive day is generally Saturday, when the average price is around £67.

What’s the cheapest month to fly from London Heathrow Airport to Dublin with Aer Lingus?

The cheapest month for Aer Lingus flights to Dublin from London Heathrow Airport is generally January, where plane tickets cost £82 on average. If possible, try to avoid the most expensive months of December and July, when tickets cost £102 and £103 respectively.

£56 Cheap Aer Lingus Flights from London Heathrow Airport to Dublin

LHR - DUB

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Flight Deals

Cheap Aer Lingus Flight Deals from London Heathrow Airport to Dublin

Here are some of the best deals found on KAYAK recently from Aer Lingus for return flights from London Heathrow Airport to Dublin that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent return Aer Lingus flight deals from London Heathrow Airport to Dublin

Wed, 14 Jan - Thu, 15 Jan

16:20 - 17:45

LHR

DUB

1h 25mdirect

19:45 - 21:05

DUB

LHR

1h 20mdirect

£111Aer Lingus

Sat, 10 Jan - Mon, 12 Jan

16:20 - 17:45

LHR

DUB

1h 25mdirect

08:45 - 10:10

DUB

LHR

1h 25mdirect

£118Aer Lingus

Fri, 9 Jan - Mon, 12 Jan

18:45 - 20:05

LHR

DUB

1h 20mdirect

18:30 - 19:50

DUB

LHR

1h 20mdirect

£120Aer Lingus

Fri, 9 Jan - Mon, 12 Jan

18:45 - 20:05

LHR

DUB

1h 20mdirect

18:30 - 19:50

DUB

LHR

1h 20mdirect

£122Aer Lingus

Sat, 10 Jan - Mon, 12 Jan

16:20 - 17:45

LHR

DUB

1h 25mdirect

18:30 - 19:50

DUB

LHR

1h 20mdirect

£122Aer Lingus

Fri, 9 Jan - Mon, 12 Jan

18:45 - 20:05

LHR

DUB

1h 20mdirect

08:45 - 10:10

DUB

LHR

1h 25mdirect

£123Aer Lingus

Fri, 9 Jan - Mon, 12 Jan

18:45 - 20:05

LHR

DUB

1h 20mdirect

15:30 - 16:50

DUB

LHR

1h 20mdirect

£125Aer Lingus

Fri, 30 Jan - Sun, 1 Feb

19:45 - 21:05

LHR

DUB

1h 20mdirect

12:05 - 13:25

DUB

LHR

1h 20mdirect

£125Aer Lingus

Fri, 9 Jan - Mon, 12 Jan

18:45 - 20:05

LHR

DUB

1h 20mdirect

18:30 - 19:50

DUB

LHR

1h 20mdirect

£126Aer Lingus

Fri, 30 Jan - Sun, 1 Feb

19:45 - 21:05

LHR

DUB

1h 20mdirect

07:35 - 09:05

DUB

LHR

1h 30mdirect

£127Aer Lingus

Useful Info

Low season	January
High season	April
Cheapest flight	£56
Average price round-trip	£487
Good deal round-trip	£414

Best time to beat the crowds (14% less expensive on average)

Most popular time to fly (1% more expensive on average)

Flight from London Heathrow Airport to Dublin

(avg. price over the last 2 weeks)

or less

When to Book Flights with Aer Lingus from London Heathrow Airport to Dublin

Average price per month

Flight prices as travel date approaches

How far in advance should I book tickets for a flight with Aer Lingus from London Heathrow Airport to Dublin?
Generally, when trying to get a below-average price for your ticket, try to book around 17 days before departure. For the cheapest possible price, our data suggests booking 0 days before departure.
Is Aer Lingus the cheapest airline to fly with from London Heathrow Airport to Dublin?
With an average price of £148 return, Aer Lingus is not the cheapest airline to fly from London Heathrow Airport to Dublin with. Instead, for the lowest price, our data suggests flying with Ryanair, where a return flight costs £67 on average.
What is the cheapest Aer Lingus flight from London Heathrow Airport to Dublin?
In the last 3 days, the lowest price for a flight with Aer Lingus from London Heathrow Airport to Dublin was £99 for a return flight and £64 for a one-way flight.
Does Aer Lingus fly direct to Dublin from London Heathrow Airport?
Yes, Aer Lingus does offer direct flights for the route, with around 87 flights per week.
What’s the cheapest day of the week to fly from London Heathrow Airport to Dublin with Aer Lingus?
On average, the cheapest day of the week to fly from London Heathrow Airport to Dublin with Aer Lingus is Monday, when prices are around £57. The most expensive day is generally Saturday, when the average price is around £67.
What’s the cheapest month to fly from London Heathrow Airport to Dublin with Aer Lingus?
The cheapest month for Aer Lingus flights to Dublin from London Heathrow Airport is generally January, where plane tickets cost £82 on average. If possible, try to avoid the most expensive months of December and July, when tickets cost £102 and £103 respectively.

7.2

Good1,392 verified ratings

6.6Food

7.1Comfort

8.0Crew

6.9Entertainment

7.4Boarding

Cons -

Food & Beverage service almost nonexistent. (in 221 reviews)

10.0 Wonderful

Verified traveller, Dec 2025

BCN

DUB

The folks and flights were fantastic. I unfortunately wasn’t able to order a meal that I could eat (I’m gluten free) because I got my ticket through kayak, but they tried their best to find something to help me get through the long flight and I’ll forever remember their kindness.

10.0 Wonderful

Kimberly, Dec 2025

JFK

SNN

Flight takeoff was delayed an hour, but arrival time was not updated at the same time as departure time, so those picking me up at the other end were not alerted to the change in my arrival.

10.0 Wonderful

Verified traveller, Dec 2025

MUC

DUB

It doesn't get a y better

6.0 Okay

Lisa, Dec 2025

BOS

DUB

Seats are terribly cramped. I’m only 5’2” and my knees were practically in my face. No room to put a normal size bag under the seat and when the person in front of you reclined their seat your tray table was in your lap. This is the airline’s way of cramming more seats into the plane to make more money. I’ll think twice about taking Aer Lingus again since there are a few other options from Boston to the Emerald Isle.

10.0 Wonderful

PAULINA, Nov 2025

DUB

LAS

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

8.0 Very Good

Verified traveller, Nov 2025

IAD

DUB

Couldn’t check In online, message was couldn’t check in until Sunday morning though plane left Saturday night. Checked in okay at airport but caused slot if stress.

10.0 Wonderful

Rick and Denise, Nov 2025

DUB

MUC

Customer service was excellent! The app was terrible, tried several times to check in without success! But the young lady that checked us in was absolutely terrific and helpful.

10.0 Wonderful

Thomas, Nov 2025

AMS

DUB

It all went very well, except for the ramp coordination upon landing in Boston. That, however, was resolved in fairly short order.

10.0 Wonderful

PAULINA, Nov 2025

DUB

NCE

Very nice

2.0 Poor

Verified traveller, Nov 2025

CDG

DUB

NOTE. Aer Lingus does not accept American Express. I was denied boarding because I could not pay the fee for my oversized bag. I did not have another credit or debit card. Moreover, at CDG, I needed to check my bag at one location, go to another location to check my oversized bag and a THIRD location to pay for my oversized bag. Hence, once I was denied boarding, my bags were already en route to the plane. To retrieve them I needed to go to a FOURTH location in another part of the terminal. Last, Aer Lingus will not reimburse me for any portion of my ticket. I lost $1000 bc Aer Lingus doesn’t accept American Express at the CDG counter even though I paid for my ticket through the Kayak link with Amex. Kayak should remedy this situation if they want to continue to partner with Aer Lingus.

Everything you need to know for your flight from London Heathrow Airport to Dublin

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Aer Lingus flights from Heathrow to Dublin

Aer Lingus flights from Heathrow to Dulles Intl

LHR - DUB

£56 Find Cheap Aer Lingus Flights from London Heathrow Airport to Dublin

Search hundreds of travel sites at once for deals on Aer Lingus flights from London Heathrow Airport to Dublin

Cheap Aer Lingus Flight Deals from London Heathrow Airport to Dublin

Recent return Aer Lingus flight deals from London Heathrow Airport to Dublin

Recent one-way Aer Lingus flight deals from London Heathrow Airport to Dublin

Recent last minute Aer Lingus flight deals from London Heathrow Airport to Dublin

Recent direct Aer Lingus flight deals from London Heathrow Airport to Dublin

Good to know

When to Book Flights with Aer Lingus from London Heathrow Airport to Dublin

FAQs for flying to Dublin with Aer Lingus

How far in advance should I book tickets for a flight with Aer Lingus from London Heathrow Airport to Dublin?

Generally, when trying to get a below-average price for your ticket, try to book around 17 days before departure. For the cheapest possible price, our data suggests booking 0 days before departure.

Is Aer Lingus the cheapest airline to fly with from London Heathrow Airport to Dublin?

With an average price of £148 return, Aer Lingus is not the cheapest airline to fly from London Heathrow Airport to Dublin with. Instead, for the lowest price, our data suggests flying with Ryanair, where a return flight costs £67 on average.

What is the cheapest Aer Lingus flight from London Heathrow Airport to Dublin?

In the last 3 days, the lowest price for a flight with Aer Lingus from London Heathrow Airport to Dublin was £99 for a return flight and £64 for a one-way flight.

Does Aer Lingus fly direct to Dublin from London Heathrow Airport?

Yes, Aer Lingus does offer direct flights for the route, with around 87 flights per week.

What’s the cheapest day of the week to fly from London Heathrow Airport to Dublin with Aer Lingus?

On average, the cheapest day of the week to fly from London Heathrow Airport to Dublin with Aer Lingus is Monday, when prices are around £57. The most expensive day is generally Saturday, when the average price is around £67.

What’s the cheapest month to fly from London Heathrow Airport to Dublin with Aer Lingus?

The cheapest month for Aer Lingus flights to Dublin from London Heathrow Airport is generally January, where plane tickets cost £82 on average. If possible, try to avoid the most expensive months of December and July, when tickets cost £102 and £103 respectively.

Aer Lingus Customer Reviews

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Everything you need to know for your flight from London Heathrow Airport to Dublin

Top Aer Lingus flights

The most popular destinations for flights with Aer Lingus according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Other airlines flying from London Heathrow Airport to Dublin

Flight deals from the most popular airlines with KAYAK users flying the route

Cabin class types available on flights to Dublin

Cabin classes available on flights to London Heathrow Airport. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Complete your trip to Dublin with a hotel stay or car hire

Flights to other popular destinations

The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

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