Question 1

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 2

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 3

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 4

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

Accepted Answer

The number of flights available between Ireland and London is 793 per week as of December 2025. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.

Question 5

What is the cheapest Ireland to London flight route?

Accepted Answer

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

Question 6

What is the cheapest month to fly to London?

Accepted Answer

In general, January is the cheapest month to fly from Ireland to London. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around €63. If you are unable to visit London during the month of January, then departing from Ireland during the month September is also very affordable. Most momondo users find prices during this month for around €74.

Question 7

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 8

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 9

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 10

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 €142 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 €106 on momondo.

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 €274. 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 €661.

Question 13

Which airlines fly to London?

Accepted Answer

British Airways, Aer Lingus and Ryanair are the top three most popular airlines that fly to London from Ireland according to our data. British Airways is the first choice among our users, with 51% 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 14

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 15

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

Accepted Answer

As of December 2025, there are 113 flights per day flying from Ireland to London. The most common time of day flights depart is 07:00, with 44% of flights taking off at midday.

Question 16

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 €200. In contrast, the most expensive time of day to depart to London is in the afternoon when prices are around €751.

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

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

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 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.

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 licence 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	2 airports

Airline	Rating	Free Cancellation	Price
Ryanair	PriceFrom €45	Free Cancellation	Rating 6.8 5,214 reviews	Search Ryanair flights
Aer Lingus	PriceFrom €84	Free Cancellation	Rating 7.2 1,389 reviews	Search Aer Lingus flights
British Airways	PriceFrom €84	Free Cancellation	Rating 6.7 7,571 reviews	Search British Airways flights

Cheap flights from Ireland to London from €15

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 17/1. 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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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 €274. 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 €661.

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 €200. In contrast, the most expensive time of day to depart to London is in the afternoon when prices are around €751.

What is the cheapest Ireland to London flight route?

Fly from Dublin to London Gatwick 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?

As of December 2025, there are 113 flights per day flying from Ireland to London. 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 on average per week?

The number of flights available between Ireland and London is 793 per week as of December 2025. The most frequent departure day is Mon, with 18% of weekly flights leaving 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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