Cheap flights from London to Dublin from £20

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 31/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — DUB
21 dic — 28 dic1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London to Dublin are usually found in January or September, booked 28 days in advance, depart on a Saturday or Friday and return on a Friday

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Cheapest flights from London to Dublin
Explore the most affordable flight options available from London to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 novembre 2025.

mar 2/1209:00LTN - DUB
Nonstop1h 15mRyanair
mer 10/1218:50DUB - LTN
Nonstop1h 15mRyanair
Deal found 18/11£39
sab 6/1217:00STN - DUB
Nonstop1h 20mRyanair
dom 7/1206:30DUB - STN
Nonstop1h 20mRyanair
Deal found 19/11£39
sab 6/1218:55LGW - DUB
Nonstop1h 25mRyanair
dom 7/1206:35DUB - LGW
Nonstop1h 25mRyanair
Deal found 19/11£40
ven 12/1205:50LTN - DUB
Nonstop1h 15mRyanair
dom 21/1214:50DUB - LTN
Nonstop1h 15mRyanair
Deal found 18/11£40
sab 29/1118:55LGW - DUB
Nonstop1h 25mRyanair
lun 1/1215:45DUB - LGW
Nonstop1h 25mRyanair
Deal found 20/11£41
mar 16/1206:30STN - DUB
Nonstop1h 20mRyanair
mer 17/1206:30DUB - STN
Nonstop1h 20mRyanair
Deal found 19/11£41
sab 13/1216:45LGW - DUB
Nonstop1h 25mRyanair
sab 13/1220:35DUB - LGW
Nonstop1h 25mRyanair
Deal found 19/11£41
dom 7/1208:05LTN - DUB
Nonstop1h 15mRyanair
mer 10/1218:50DUB - LTN
Nonstop1h 15mRyanair
Deal found 19/11£41
mer 3/1208:50LGW - DUB
Nonstop1h 25mRyanair
mer 3/1217:05DUB - LGW
Nonstop1h 25mRyanair
Deal found 19/11£42
sab 29/1121:45STN - DUB
Nonstop1h 20mRyanair
lun 1/1221:40DUB - STN
Nonstop1h 20mRyanair
Deal found 20/11£42
lun 8/1217:35LGW - DUB
Nonstop1h 25mRyanair
lun 22/1207:00DUB - LGW
Nonstop1h 25mRyanair
Deal found 18/11£43
mar 2/1209:00LTN - DUB
Nonstop1h 15mRyanair
mar 9/1207:20DUB - LTN
Nonstop1h 15mRyanair
Deal found 19/11£43

Cheap flight deals from London to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Dublin (DUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 novembre 2025.

Round-trip from

£39

One-way from

£20

Popular in

December

Cheapest in

January

Average price

£69

Good round-trip deal

£48 or less

Good one-way deal

£18 or less
Ryanair
  • Ryanair
  • 27/1-29/1
  • Nonstop
  • 2h 50m total
  • London to Dublin
Ryanair
  • Ryanair
  • 31/1
  • Nonstop
  • 1h 25m total
  • London to Dublin
Highest demand for flights based on searches. 9% potential increase in price (£5 potential increase over avg. return price).
Cheapest flight prices on average. 6% potential price decrease (£4 potential savings vs. average return price).
Average for round-trip flights in November 2025
Price to beat on a round-trip flight from London (LON) to Dublin.
Price to beat on a one-way flight from London (LON) to Dublin.

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Dublin 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 21 novembre 2025.
Use the filters below to find and compare flights from London to Dublin that are best for you.

Fly from

London

Fly to

Dublin

Route

Depart

Return

Price

LondonDublin

LGW - DUB

LGWDUB

London Gatwick

sab 6/12

18:55-20:20

Nonstop1h 25m

Dublin

dom 7/12

06:35-08:00

Nonstop1h 25m

£40

LondonDublin

STN - DUB

STNDUB

London Stansted

mar 27/1

18:45-20:05

Nonstop1h 20m

Dublin

gio 29/1

16:30-17:50

Nonstop1h 20m

£40

LondonDublin

STN - DUB

STNDUB

London Stansted

gio 12/2

06:30-07:50

Nonstop1h 20m

Dublin

lun 16/2

06:30-07:50

Nonstop1h 20m

£41

LondonDublin

LGW - DUB

LGWDUB

London Gatwick

sab 13/12

16:45-18:10

Nonstop1h 25m

Dublin

sab 13/12

20:35-22:00

Nonstop1h 25m

£41

LondonDublin

LTN - DUB

LTNDUB

London Luton

ven 16/1

20:55-22:10

Nonstop1h 15m

Dublin

sab 24/1

15:00-16:15

Nonstop1h 15m

£42

LondonDublin

LTN - DUB

LTNDUB

London Luton

sab 24/1

16:40-17:55

Nonstop1h 15m

Dublin

dom 25/1

06:20-07:35

Nonstop1h 15m

£43

LondonDublin

LTN - DUB

LTNDUB

London Luton

sab 17/1

21:00-22:15

Nonstop1h 15m

Dublin

dom 18/1

06:20-07:35

Nonstop1h 15m

£43

LondonDublin

STN - DUB

STNDUB

London Stansted

lun 8/12

08:30-09:50

Nonstop1h 20m

Dublin

mer 10/12

06:30-07:50

Nonstop1h 20m

£43

LondonDublin

LTN - DUB

LTNDUB

London Luton

ven 12/12

05:50-07:05

Nonstop1h 15m

Dublin

dom 14/12

06:20-07:35

Nonstop1h 15m

£44

LondonDublin

STN - DUB

STNDUB

London Stansted

mar 2/12

06:30-07:50

Nonstop1h 20m

Dublin

mar 2/12

20:00-21:20

Nonstop1h 20m

£44

Flights are sorted by cheapest return flights first.

Deals found on 19/11

Showing 1-10 of 60 results
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Best time to book a flight from London to Dublin

Have a flexible travel schedule? Discover the best time to fly to Dublin 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 Dublin

How far ahead should I book a flight from London to Dublin?

Use this chart to determine the optimal time to book a return flight from London to Dublin. Price data was last updated on 14 November 2025.

The price you pay for your flight from London to Dublin may vary depending on when you book. For the best chance of a lower fare, look to book 28 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from London to Dublin (average of £24). Flying from London to Dublin in December is currently the most expensive (average of £40). 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 DUB?

Find hourly flight availability from London to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 novembre 2025.

It’s optimal to fly from London to Dublin in the afternoon. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight in the morning.

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

Use this chart to determine the cheapest time to fly return from London to Dublin. Price data was last updated on 2 November 2025.

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

Weekly flight availability from London to Dublin

Explore weekly flight availability from London to Dublin. 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 21 novembre 2025.

The most flights from LON to DUB are scheduled on a Thursday (99 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (29 on average).

How much does it cost for a return flight from London to Dublin?

How often are flights from London to Dublin delayed?

About 19% of weekly flights between London and Dublin have experienced delays in the past year, with the average delay time being 103 minutes.

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

Historically, flights departing in the morning 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 Dublin flights?

Over the past year, Aruba Airlines have had the lowest number of delays on this route, with no flights being classified as delayed.

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated 21 novembre 2025.
Get a feel of what it's like to fly with Aer Lingus, Ryanair, andBritish Airways from London to Dublin by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.2

Entertainment

6.9

Boarding

7.4

Crew

8.0

Food

6.6

Comfort

7.1

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.

Overall

7.2

Entertainment

6.9

Boarding

7.4

Crew

8.0

Food

6.6

Comfort

7.1

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.

Overall

7.2

Entertainment

6.9

Boarding

7.4

Crew

8.0

Food

6.6

Comfort

7.1

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.

Overall

7.2

Entertainment

6.9

Boarding

7.4

Crew

8.0

Food

6.6

Comfort

7.1

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

Overall

7.2

Entertainment

6.9

Boarding

7.4

Crew

8.0

Food

6.6

Comfort

7.1

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 Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Dublin from London?

    Dublin (DUB) is the airport you will fly into if you book a flight from London to Dublin. You should not have trouble finding flights to Dublin from London; the airport handles an average of 58 inbound flights from London per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Dublin airport from London. It is only a 5.7 mi journey from Dublin (DUB) to Dublin’s city center.

  • How long is the flight from London to Dublin?

    There are many flights that can get you from London to Dublin in 1h 25m. Fly via Ryanair or British Airways to get the fastest option. The distance from London to Dublin is about 300 mi. Generally, flights for this route are direct.

  • What are the cheapest airlines flying from London to Dublin round-trip?

    According to our current data, Ryanair (£29), British Airways (£70), and Aer Lingus (£93) offers the cheapest pricing from London to Dublin. Ryanair is 57% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

    Before booking your flight to Dublin from London, check out the most reliable airlines to get you to your destination on time: Qatar Airways (74%), Kenya Airways (73%), Aer Lingus( 73%).

  • What are the cheapest flights from London to Dublin?

    The cheapest flight price from London to Dublin is £62. On average you can expect to pay £667. The most popular route, (London Gatwick - Dublin), can usually be booked for £30.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to Dublin 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 Dublin?

    Currently, February is the cheapest month in which you can book a flight from London to Dublin (average of £24). Flying from London to Dublin in December is currently the most expensive (average of £40). 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 are the most eco-friendly airlines from London to Dublin?

    Many eco-friendly airlines have flights to Dublin from London. Some of the most sustainable airlines to fly with include Ryanair, EasyJet, British Airways, and Vueling. When you fly with Ryanair, you will be flying with one of Europe’s cleanest airlines. This airline is investing in getting the newest aircraft that have better fuel efficiency. Ryanair is also working on its engine technology and adopting the most efficient methods to minimise its environmental impact. EasyJet is another great airline that promotes sustainable travel. This airline flies with a fleet that is 15% more fuel-efficient than before. They also offset their carbon emissions from their fuel on all flights. British Airways is always a good option for eco-friendly flights. They recently took a flight that only used recycled fuel. They are working on making this fuel their primary fuel. Vueling has a very efficient fleet of aircraft. They have introduced the Airbus A320neo, which uses 18% fewer carbon emissions than the previous model. Vueling has also replaced their seats with a lighter version; this is saving them a lot of fuel each year.

  • How to fly more sustainably from London to Dublin?

    There are many great ways to foster eco-friendly air travel. One way, which is highly recommended, is to fly in economy class. The economic class allows for more room on a plane, allowing more people on one flight. If you can take a direct flight from London to Dublin, this is another way to ensure sustainable travel. If you take a direct flight, you will use less fuel than if you take a flight that includes a stopover. Packing light is also highly recommended. The lighter the aircraft, the less fuel it will use. Choosing to fly with an eco-friendly airline is always a plus, so if you can, fly with Ryanair, EasyJet, British Airways or Vueling.

See more FAQs

Travelling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Athlone
Wicklow
Tullamore
Cavan
Drogheda
Malahide
Portmarnock
Dundalk
Enniscorthy
Mullingar
Bray
Arklow
Kildare
Carlingford
Maynooth
Swords
Naas

Browse thousands of different options on Cheapflights for your next trip

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Fly from London to Dublin on these airlines

Choose from the following airlines for your flight from London to Dublin. Flights are based on user searches made on Cheapflights and were last updated on 21 novembre 2025.

Top 3 airlines flying from London to Dublin

Discover the top 3 airlines that operate flights from London to Dublin. 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 21 novembre 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£29Average£72FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£70Average£150FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£93Average£178FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

When you search for this flight from London to Dublin, 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 Dublin?

Cheapflights helps you find that perfect flight to Dublin from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Certainly. Search results for flights to Dublin from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Not ready to book yet? You can track prices for flights from London to Dublin on Cheapflights with our Price Alert feature and get notified when better prices are available.

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