Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

You are more likely to see cheaper flights to London from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £123 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Ireland for as low as £92 on momondo.

Question 3

How long does it take to fly to London?

Accepted Answer

Flight times from Ireland to London vary, but if you’re flying out of Cork and flying into London Heathrow Airport (one of the most popular routes), then the duration is 1h 15m on average. Another popular route from Ireland to London is flying from Dublin to London Heathrow Airport, which will take roughly 1h 15m. Keep in mind that layovers or delays could extend your travel time.

Question 4

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

Accepted Answer

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

Question 5

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

Accepted Answer

As of December 2025, 626 flights take off from Ireland and land in London each week. The most common flight departure day for this route is Thu, with 22% of weekly flights taking off on this day.

Question 6

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

Accepted Answer

According to our data, British Airways 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 7

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

Accepted Answer

The number of flights available between Ireland and London is 89 per day as of December 2025. The most frequent departure time is 07:00, with 45% of daily flights leaving at midday.

Question 8

Which airlines fly to London?

Accepted Answer

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

Question 9

How often are flights from Ireland to London delayed?

Accepted Answer

Historically, on average around 16% 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 100 minutes.

Question 10

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 11

Can stopping save me money on Ireland to London flights?

Accepted Answer

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

Question 12

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

Accepted Answer

Our data shows that Friday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £164. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to London for around £428.

Question 13

What is the cheapest Ireland to London flight route?

Accepted Answer

Fly from Cork to London Luton for the best Ireland - London flight prices

Question 14

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

Accepted Answer

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £122. Flights in the afternoon are often more expensive, with an average ticket price of £508.

Question 15

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

Accepted Answer

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

Question 16

What is the cheapest month to fly to London?

Accepted Answer

The cheapest month to fly to London from Ireland is in January. Flight prices, which tend to average around £54, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Ireland averaging around £64.

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

As of December 2025, there are 3 operators available to choose from for flights from Ireland to London.

Question 19

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

Accepted Answer

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to London.

Question 20

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

Accepted Answer

The required travel and health documents for your London 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 license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best price found	£24
Fastest flight time	1h 15m
Direct flights	Every day
Airports in London	6 airports

Airline	Rating	Free Cancellation	Price
Ryanair	PriceFrom £28	Free Cancellation	Rating 6.8 5,222 reviews	Search Ryanair flights
Aer Lingus	PriceFrom £71	Free Cancellation	Rating 7.2 1,399 reviews	Search Aer Lingus flights
British Airways	PriceFrom £73	Free Cancellation	Rating 6.7 7,585 reviews	Search British Airways flights

Cheap flights from Ireland to London from £13

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 19/1. 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

What is the cheapest month to fly to London?

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

Our data shows that Friday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £164. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to London for around £428.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £122. Flights in the afternoon are often more expensive, with an average ticket price of £508.

What is the cheapest Ireland to London flight route?

Fly from Cork to London Luton for the best Ireland - London flight prices

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

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

There are 3 cabin classes available to choose from on Ireland to London 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 flights?

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

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

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

Which airlines fly to London?

How often are flights from Ireland to London delayed?

Historically, on average around 16% 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 100 minutes.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night 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, British Airways 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 on average per day?

The number of flights available between Ireland and London is 89 per day as of December 2025. The most frequent departure time is 07:00, with 45% of daily flights leaving at midday.

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

As of December 2025, 626 flights take off from Ireland and land in London each week. The most common flight departure day for this route is Thu, with 22% of weekly flights taking off on this day.

How long does it take to fly to London?

Cheap Ireland to London flight deals and tips

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

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

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

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

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

Best airlines flying from Ireland to London

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