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Cheap flights from London to Ireland from £15

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — DUB
4 Jan — 11 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Ireland

Enter your travel dates to find the best prices.

Cheapest flights from London to Ireland
Explore the most affordable flight options available from London to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 December 2025.

Sat 13/1210:15STN - DUB
Nonstop1h 20mRyanair
Mon 15/1220:00DUB - STN
Nonstop1h 20mRyanair
Deal found 2/12£40
Sat 6/1216:45LGW - DUB
Nonstop1h 25mRyanair
Sat 13/1220:35DUB - LGW
Nonstop1h 25mRyanair
Deal found 4/12£41
Sat 13/1221:45STN - DUB
Nonstop1h 20mRyanair
Sat 20/1217:00DUB - STN
Nonstop1h 20mRyanair
Deal found 2/12£41
Sat 6/1221:45STN - DUB
Nonstop1h 20mRyanair
Mon 8/1221:40DUB - STN
Nonstop1h 20mRyanair
Deal found 3/12£43
Sat 6/1220:00STN - DUB
Nonstop1h 20mMultiple Airlines
Sat 13/1218:45DUB - STN
Nonstop1h 20mMultiple Airlines
Deal found 3/12£45
Sat 13/1221:00LTN - DUB
Nonstop1h 15mRyanair
Sun 14/1206:20DUB - LTN
Nonstop1h 15mRyanair
Deal found 3/12£46
Sat 6/1221:45STN - DUB
Nonstop1h 20mRyanair
Sat 13/1218:45DUB - STN
Nonstop1h 20mRyanair
Deal found 4/12£46
Sun 7/1208:05LTN - DUB
Nonstop1h 15mRyanair
Sun 14/1206:20DUB - LTN
Nonstop1h 15mRyanair
Deal found 4/12£46
Wed 31/1221:00STN - DUB
Nonstop1h 20mRyanair
Thu 1/108:30DUB - STN
Nonstop1h 20mRyanair
Deal found 2/12£46
Sat 6/1220:10LGW - DUB
Nonstop1h 25mRyanair
Mon 8/1214:30DUB - LGW
Nonstop1h 25mRyanair
Deal found 3/12£47
Thu 4/1216:30STN - DUB
Nonstop1h 20mRyanair
Mon 8/1221:40DUB - STN
Nonstop1h 20mRyanair
Deal found 3/12£47
Sat 13/1221:45STN - DUB
Nonstop1h 20mRyanair
Sun 14/1206:30DUB - STN
Nonstop1h 20mRyanair
Deal found 3/12£48

Find flight deals from London to Ireland

Keep the following information in mind while searching for London to Ireland flight deals. Data was last updated 5 December 2025.

Round-trip from

£34

One-way from

£15

Popular in

December

Cheapest in

January

Average price

£101

Good round-trip deal

£44 or less

Good one-way deal

£15 or less
Ryanair
  • Ryanair
  • 6/1-8/1
  • Nonstop
  • 3h 00m total
  • London to Ireland
Search Deals
Ryanair
  • Ryanair
  • 19/1
  • Nonstop
  • 1h 25m total
  • London to Ireland
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£5 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from London (LON) to Ireland.
Search Deals
Price to beat on a one-way flight from London (LON) to Ireland.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 5 December 2025.
Use the filters below to find and compare flights from London to Ireland that are best for you.

Fly from

London

Fly to

Ireland

Route

Depart

Return

Price

LondonShannon

LGW - SNN

LGWSNN

London Gatwick

Sat 3/1

18:30-20:00

Nonstop1h 30m

Shannon

Sun 11/1

15:55-17:25

Nonstop1h 30m

£39

LondonCork

LGW - ORK

LGWORK

London Gatwick

Sat 17/1

18:00-19:25

Nonstop1h 25m

Cork

Sun 18/1

18:00-19:25

Nonstop1h 25m

£40

LondonDublin

LTN - DUB

LTNDUB

London Luton

Sat 28/2

12:25-13:40

Nonstop1h 15m

Dublin

Mon 2/3

07:40-08:55

Nonstop1h 15m

£41

LondonShannon

LGW - SNN

LGWSNN

London Gatwick

Fri 9/1

16:35-18:05

Nonstop1h 30m

Shannon

Tue 13/1

10:45-12:15

Nonstop1h 30m

£41

LondonDublin

STN - DUB

STNDUB

London Stansted

Fri 27/2

21:45-23:05

Nonstop1h 20m

Dublin

Sun 1/3

08:30-09:50

Nonstop1h 20m

£41

LondonDublin

LGW - DUB

LGWDUB

London Gatwick

Fri 27/2

21:35-23:00

Nonstop1h 25m

Dublin

Mon 2/3

14:30-15:55

Nonstop1h 25m

£43

LondonCork

LGW - ORK

LGWORK

London Gatwick

Fri 6/2

18:00-19:25

Nonstop1h 25m

Cork

Sun 8/2

18:00-19:25

Nonstop1h 25m

£44

LondonDublin

STN - DUB

STNDUB

London Stansted

Wed 31/12

18:45-20:05

Nonstop1h 20m

Dublin

Thu 1/1

06:30-07:50

Nonstop1h 20m

£45

LondonDublin

STN - DUB

STNDUB

London Stansted

Fri 20/2

21:45-23:05

Nonstop1h 20m

Dublin

Sat 21/2

18:45-20:05

Nonstop1h 20m

£45

LondonDublin

LTN - DUB

LTNDUB

London Luton

Fri 2/1

13:05-14:20

Nonstop1h 15m

Dublin

Sun 4/1

06:20-07:35

Nonstop1h 15m

£46

Flights are sorted by cheapest return flights first.

Deals found on 4/12

Showing 1-10 of 60 results
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6

Best time to book a flight from London to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Ireland

What is the cheapest month to book a flight from London to Ireland?

Currently, December is the cheapest month in which you can book a flight from London to Ireland (average of £16). Flying from London to Ireland in August is currently the most expensive (average of £32). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to IE?

Find hourly flight availability from London to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 5 December 2025.

A simple way to save on the total cost of your ticket is to fly from London to Ireland in the afternoon. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from London to Ireland?

Use this chart to determine the cheapest time to fly return from London to Ireland. Price data was last updated on 29 November 2025.

Travellers seeking maximum savings on their London to Ireland flight should consider departing on Monday afternoons when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London to Ireland

Explore weekly flight availability from London to Ireland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 5 December 2025.

The most flights from LON to IE0 are scheduled on a Monday (92 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (37 on average).

How often are flights from London to Ireland delayed?

About 18% of weekly flights between London and Ireland have experienced delays in the past year, with the average delay time being 102 minutes.

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

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

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

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, Aer Lingus have had the lowest number of delays on this route, with just 14% of flights being delayed.

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ireland. Reviews last updated 5 December 2025.
Check out reviews from past customers who have flown with Aer Lingus, Ryanair, andBritish Airways from London to Ireland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,384 reviews
Check prices

Boarding

7.4

Food

6.6

Entertainment

6.9

Crew

8.0

Comfort

7.1

Overall

7.2

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.
Aer Lingus
7.2
Good
1,384 reviews
Aer Lingus
7.2
Good
1,384 reviews
Check prices

Boarding

7.4

Food

6.6

Entertainment

6.9

Crew

8.0

Comfort

7.1

Overall

7.2

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.
Ryanair
6.8
Okay
5,212 reviews
Aer Lingus
7.2
Good
1,384 reviews
Check prices

Boarding

7.4

Food

6.6

Entertainment

6.9

Crew

8.0

Comfort

7.1

Overall

7.2

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.
British Airways
6.7
Okay
7,562 reviews
Aer Lingus
7.2
Good
1,384 reviews
Check prices

Boarding

7.4

Food

6.6

Entertainment

6.9

Crew

8.0

Comfort

7.1

Overall

7.2

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.
Ryanair
6.3
Okay
Aer Lingus
7.2
Good
1,384 reviews
Check prices

Boarding

7.4

Food

6.6

Entertainment

6.9

Crew

8.0

Comfort

7.1

Overall

7.2

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.

Related info for your journey

Find useful and relevant information for your journey from London to Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London to Ireland?

    Airlines like Ryanair, British Airways, and Aer Lingus fly from London to Ireland in about 1h 20m. The time it takes to get you to your destination is usually consistent. There are 368 mi between London and Ireland. Generally, flights for this route are direct.

  • What are the cheapest airlines to fly from London to Ireland one-way?

    For one-way options, check prices for Ryanair. According to our data, you can fly for as low as £14. Users have also found prices from £34 and £44 on Aer Lingus and British Airways, respectively.

  • What are the most popular routes from London to Ireland?

    The most popular flight routes from London to Ireland are London Heathrow - Dublin, London Gatwick - Dublin and London Stansted - Dublin.

  • What are the most reliable airlines from London to Ireland?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Ireland on time: Kenya Airways (80%), LATAM Airlines (79%), Air Canada (77%).

  • What are the cheapest flights from London to Ireland?

    Looking at all options, your cheapest flight can be booked for £65. While the most popular route (London Heathrow - Dublin) can be booked for £61 on average, our data indicates £343 when flying from London to Ireland.

  • Can I find deals for flights from London to Ireland that include hotel bookings?

    Yes. In addition to deals on London to Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Ireland.

  • Can I find deals for business class flights from London to Ireland?

    Yes. Cheapflights offers flight deals from London to Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Ireland?

    Currently, December is the cheapest month in which you can book a flight from London to Ireland (average of £16). Flying from London to Ireland in August is currently the most expensive (average of £32). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for London to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from London to Ireland

Discover the top 3 airlines that operate flights from London to Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 5 December 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£23Average£74FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£68Average£174FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£79Average£170FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Ireland?

When you search for this flight from London to Ireland, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from London to Ireland?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Ireland for you. Better yet — we are completely free to use.

Can Cheapflights find flights from London to Ireland with no change fees?

Need flexible booking options for your flight to Ireland from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from London to Ireland become cheaper?

Yes! Start tracking prices for London to Ireland flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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