Question 1

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

Accepted Answer

Flying to Dublin from London Heathrow Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as £84 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £121 on average. Flights to Dublin from London Heathrow Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

Question 2

How many flights depart from London Heathrow Airport to Dublin on average per week?

Accepted Answer

As of December 2025, 314 flights take off from London Heathrow Airport and land in Dublin each week. The most common flight departure day for this route is Wed, with 20% of weekly flights taking off on this day.

Question 3

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

Accepted Answer

As of December 2025, prices for London Heathrow Airport to Dublin flights are approximately 33% more expensive when compared to flights at the same time last year.

Question 4

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

Accepted Answer

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.

Question 5

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Question 6

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

Accepted Answer

On average, the least expensive day to fly to Dublin from London Heathrow Airport is on a Saturday. momondo users have found tickets for Saturday departures for as low as £101. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around £137. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.

Question 7

Which airline has the best punctuality record on London to Dublin flights?

Accepted Answer

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

Question 8

What is the cheapest airline that flies from London Heathrow to Dublin?

Accepted Answer

British Airways is the most popular carrier operating from London Heathrow to Dublin

Question 9

What is the most punctual flight time for London to Dublin flights?

Accepted Answer

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Question 10

Which airlines fly to Dublin?

Accepted Answer

British Airways, Aer Lingus and Ryanair are the top three most popular airlines that fly to Dublin from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 57% of people opting to fly with this airline when travelling to Dublin. Keep in mind that there are 3 different airlines that fly to Dublin on a routine basis, so you have a few additional options to choose from.

Question 11

What is the cheapest month to fly to Dublin?

Accepted Answer

In general, January is the cheapest month to fly from London Heathrow Airport to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £106. If you aren’t able to travel to Dublin during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of £112.

Question 12

How often are flights from London to Dublin delayed?

Accepted Answer

Historically, on average around 16% of flights between London and Dublin have experienced a delay on any given week. The average delay length over the past 12 months has been 106 minutes.

Question 13

What is the cheapest London Heathrow to Dublin flight route?

Accepted Answer

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

Question 14

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

Accepted Answer

Prices are currently low for flights on this route.Typical prices usually range from £108 to £199.
The lowest price recently found on this route was £62.

Question 15

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

Accepted Answer

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 £128 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 £95 on momondo.

Question 16

How many flights depart from London Heathrow Airport to Dublin on average per day?

Accepted Answer

As of December 2025, 44 flights take off from London Heathrow Airport and land in Dublin each day. The most common flight departure time for this route is 08:00, with 44% of daily flights taking off at midday.

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

The number of operators available for flights from London Heathrow Airport to Dublin Airport is 3 as of December 2025.

Question 19

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

Accepted Answer

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Dublin Airport.

Question 20

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

Accepted Answer

The necessary travel and health documents for your Dublin Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best price found	£226
Fastest flight time	1h 20m
Direct flights	Every day
Airports in Dublin	1 airport

Airline	Rating	Free Cancellation	Price
Ryanair	PriceFrom £31	Free Cancellation	Rating 6.8 5,212 reviews	Search Ryanair flights
British Airways	PriceFrom £69	Free Cancellation	Rating 6.7 7,557 reviews	Search British Airways flights
Aer Lingus	PriceFrom £99	Free Cancellation	Rating 7.2 1,384 reviews	Search Aer Lingus flights

Cheap flights from London Heathrow Airport to Dublin from £37

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 26/2. 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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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?

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

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

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?

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 December 2025, prices for London Heathrow Airport to Dublin flights are approximately 33% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from London Heathrow to Dublin?

British Airways is the most popular carrier operating from London Heathrow to Dublin

Which airlines fly to Dublin?

How often are flights from London to Dublin delayed?

Historically, on average around 16% of flights between London and Dublin have experienced a delay on any given week. The average delay length over the past 12 months has been 106 minutes.

What is the most punctual flight time for London to Dublin flights?

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on London to Dublin flights?

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

How many flights depart from London Heathrow Airport to Dublin on average per day?

As of December 2025, 44 flights take off from London Heathrow Airport and land in Dublin each day. The most common flight departure time for this route is 08:00, with 44% of daily flights taking off at midday.

How many flights depart from London Heathrow Airport to Dublin on average per week?

As of December 2025, 314 flights take off from London Heathrow Airport and land in Dublin each week. The most common flight departure day for this route is Wed, with 20% of weekly flights taking off on this day.

When to book flights from London Heathrow Airport to Dublin

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

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

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

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

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