Question 1

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

Accepted Answer

The number of flights available between Ireland and London Heathrow Airport is 571 per week as of February 2026. The most frequent departure day is Fri, with 17% of weekly flights leaving on this day.

Question 2

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

Accepted Answer

As of February 2026, there are 81 flights per day flying from Ireland to London Heathrow Airport. The most common time of day flights depart is 07:00, with 44% of flights taking off at midday.

Question 3

Can stopping save me money on Ireland to London Heathrow Airport flights?

Accepted Answer

No. A direct flight is the cheapest option for a flight between Ireland to London Heathrow Airport.

Question 4

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

Accepted Answer

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 14% of their flights experiencing any sort of delay.

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 most punctual flight time for Ireland to London 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 7

What is the cheapest month to fly to London Heathrow Airport?

Accepted Answer

The month of February is another great option to travel to London Heathrow Airport, with average flight prices from Ireland averaging around €120.

Question 8

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

Accepted Answer

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

Question 9

How often are flights from Ireland to London delayed?

Accepted Answer

Historically, on average around 15% of flights between Ireland and London have experienced a delay on any given week. The average delay length over the past 12 months has been 94 minutes.

Question 10

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

Accepted Answer

British Airways and Aer Lingus are the most popular carriers operating from Ireland to London Heathrow

Question 11

What is the cheapest Ireland to London Heathrow flight route?

Accepted Answer

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

Question 12

What is the cheapest day to depart on your flight to London Heathrow Airport?

Accepted Answer

The cheapest day to depart on your flight to London Heathrow Airport is on a Friday when prices can be found for as low as €431. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Ireland because it is more convenient for both business and leisure travellers. As a result, prices tend to be around €681.

Question 13

How long does it take to fly to London Heathrow Airport?

Accepted Answer

Flight times vary depending on what airport in Ireland you fly out of and what airport in London Heathrow Airport you fly into. For example, flying from Cork to London Heathrow Airport takes 1h 15m on average. On the other hand, flying from Dublin to London Heathrow Airport takes 1h 15m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo to see if there are any available for your route.

Question 14

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

Accepted Answer

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Ireland to London Heathrow Airport in the evening for as low as €228. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are €758 on average. Flights to London Heathrow Airport from Ireland in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

Question 15

How far in advance should I book a flight to London Heathrow Airport?

Accepted Answer

You are more likely to see cheaper flights to London Heathrow Airport from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around €139 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Ireland for as low as €104 on momondo.

Question 16

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

Accepted Answer

Prices for flights from Ireland to London Heathrow Airport were last updated today.

Question 17

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

Accepted Answer

The number of operators available for flights from Ireland to London Heathrow Airport is 2 as of February 2026.

Question 18

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

Accepted Answer

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ireland to London Heathrow Airport.

Question 19

What documentation or ID do you need to fly to London Heathrow Airport?

Accepted Answer

The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best price found	€78
Fastest flight time	1h 15m
Direct flights	Every day

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom €86	Free Cancellation	Rating 6.7 7,719 reviews		Search British Airways flights
Aer Lingus	PriceFrom €95	Free Cancellation	Rating 7.2 1,445 reviews		Search Aer Lingus flights

Cheap flights from Ireland to London 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 Ireland to London departing on 7/7. 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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How to get the cheapest flight ticket from Ireland to London Heathrow Airport

What is the cheapest month to fly to London Heathrow Airport?

The month of February is another great option to travel to London Heathrow Airport, with average flight prices from Ireland averaging around €120.

What is the cheapest day to depart on your flight to London Heathrow Airport?

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

What is the cheapest Ireland to London Heathrow flight route?

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

How far in advance should I book a flight to London Heathrow Airport?

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

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

Can stopping save me money on Ireland to London Heathrow Airport flights?

No. A direct flight is the cheapest option for a flight between Ireland to London Heathrow Airport.

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

British Airways and Aer Lingus are the most popular carriers operating from Ireland to London Heathrow

How often are flights from Ireland to London delayed?

Historically, on average around 15% of flights between Ireland and London have experienced a delay on any given week. The average delay length over the past 12 months has been 94 minutes.

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

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 14% of their flights experiencing any sort of delay.

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

As of February 2026, there are 81 flights per day flying from Ireland to London Heathrow Airport. The most common time of day flights depart is 07:00, with 44% of flights taking off at midday.

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

The number of flights available between Ireland and London Heathrow Airport is 571 per week as of February 2026. The most frequent departure day is Fri, with 17% of weekly flights leaving on this day.

How long does it take to fly to London Heathrow Airport?

Cheap Ireland to London Heathrow Airport flight deals and tips

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

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

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

What documentation or ID do you need to fly to London Heathrow Airport?

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

Best airlines flying from Ireland to London Heathrow Airport

Compare and see reviews for airlines that fly from Ireland to London Heathrow Airport with momondo

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