Question 1

Which airlines fly to Ireland?

Accepted Answer

Ryanair, Aer Lingus and British Airways are the top three most popular airlines that fly to Ireland from London according to our data. Ryanair is the first choice among our users, with 73% of people opting to fly with this airline when travelling to Ireland. Keep in mind that there are 4 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

You are more likely to see cheaper flights to Ireland from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland 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 Ireland from London for as low as £95 on momondo.

Question 4

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 5

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

Accepted Answer

The number of flights available between London and Ireland is 607 per week as of December 2025. The most frequent departure day is Thu, with 23% of weekly flights leaving on this day.

Question 6

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

Accepted Answer

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

Question 7

Can stopping save me money on London to Ireland flights?

Accepted Answer

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

Question 8

What is the cheapest month to fly to Ireland?

Accepted Answer

The month of January is, on average, the cheapest month to fly to Ireland from London, with most prices found around £49. If you’re not able to fly to Ireland in January, then September is your next best option. Flight prices from London to Ireland during September average around £54.

Question 9

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

Accepted Answer

86 flights are operational daily from London to Ireland as of December 2025. The most popular departure time for this route is 09:00, with 39% of flights per day taking off at midday.

Question 10

What is the most punctual flight time for London to Ireland 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 11

What is the cheapest London to Ireland flight route?

Accepted Answer

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

Question 12

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

Accepted Answer

The cheapest day to depart on your flight to Ireland is on a Friday when prices can be found for as low as £325. This is often the case because there is less demand to fly during this day of the week. Flights from London to Ireland on a Monday will generally be more expensive and average around £518. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Question 13

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

Accepted Answer

In the afternoon is the cheapest time of day to fly from London to Ireland when you can find flight prices for as low as £137. Flying to Ireland in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Ireland are more costly in the morning, with an average ticket price of £501. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Question 14

Which airline has the best punctuality record on London to Ireland 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 15

How often are flights from London to Ireland delayed?

Accepted Answer

Historically, on average around 18% of flights between London and Ireland have experienced a delay on any given week. The average delay length over the past 12 months has been 102 minutes.

Question 16

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

Accepted Answer

Prices for flights from London to Ireland are refreshed on a daily basis.

Question 17

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

Accepted Answer

As of December 2025, there are 4 operators available to choose from for flights from London to Ireland.

Question 18

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

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 to Ireland.

Question 19

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

Accepted Answer

The travel and health documents required for your trip to Ireland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best price found	£17
Fastest flight time	1h 15m
Direct flights	Every day
Airports in Ireland	77 airports

Airline	Rating	Free Cancellation	Price
Ryanair	PriceFrom £22	Free Cancellation	Rating 6.8 5,222 reviews	Search Ryanair flights
Ryanair	PriceFrom £29	Free Cancellation	Rating 6.3 117 reviews	Search Ryanair flights
British Airways	PriceFrom £68	Free Cancellation	Rating 6.7 7,585 reviews	Search British Airways flights
Aer Lingus	PriceFrom £79	Free Cancellation	Rating 7.2 1,395 reviews	Search Aer Lingus flights

Cheap flights from London to Ireland from £16

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 to Ireland departing on 16/1. 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 London to Ireland

What is the cheapest month to fly to Ireland?

The month of January is, on average, the cheapest month to fly to Ireland from London, with most prices found around £49. If you’re not able to fly to Ireland in January, then September is your next best option. Flight prices from London to Ireland during September average around £54.

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

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

What is the cheapest London to Ireland flight route?

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

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

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

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

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

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

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

Which airlines fly to Ireland?

How often are flights from London to Ireland delayed?

Historically, on average around 18% of flights between London and Ireland have experienced a delay on any given week. The average delay length over the past 12 months has been 102 minutes.

What is the most punctual flight time for London to Ireland 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 Ireland 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 London to Ireland on average per day?

86 flights are operational daily from London to Ireland as of December 2025. The most popular departure time for this route is 09:00, with 39% of flights per day taking off at midday.

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

The number of flights available between London and Ireland is 607 per week as of December 2025. The most frequent departure day is Thu, with 23% of weekly flights leaving on this day.

Cheap London to Ireland flight deals and tips

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

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

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

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

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

Best airlines flying from London to Ireland

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

Why use momondo?

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