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Cheap flights from Dublin to London 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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LON
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Dublin to London are usually found in January or November, booked 56 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap flight deals from Dublin to London

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) to London (LON). 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 17 September 2025.

Round-trip from

£37

One-way from

£20

Popular in

December

Cheapest in

January

Average price

£70

Good round-trip deal

£47 or less

Good one-way deal

£21 or less
Ryanair
  • Ryanair
  • 3/10-6/10
  • Nonstop
  • 2h 55m total
  • Dublin to London
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Ryanair
  • Ryanair
  • 10/11
  • Nonstop
  • 1h 15m total
  • Dublin to London
Search Deals
High demand for flights, 15% potential price rise
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Cheapest flight prices on average. 2% potential price decrease (£2 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Dublin to London (LON).
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Price to beat on a one-way flight from Dublin to London (LON).
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Find flight deals from Dublin to London

Cheapest flights from Dublin to London
Explore the most affordable flight options available from Dublin to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2025.

Fri 3/1006:50DUB - LGW
Nonstop1h 30mRyanair
Mon 6/1021:30LGW - DUB
Nonstop1h 25mRyanair
Deal found 15/9£37
Fri 3/1011:55DUB - LTN
Nonstop1h 10mRyanair
Mon 6/1009:00LTN - DUB
Nonstop1h 15mRyanair
Deal found 16/9£37
Fri 7/1122:00DUB - STN
Nonstop1h 20mRyanair
Sun 9/1106:30STN - DUB
Nonstop1h 20mRyanair
Deal found 16/9£37
Fri 10/1019:55DUB - LGW
Nonstop1h 30mRyanair
Sun 12/1008:55LGW - DUB
Nonstop1h 25mRyanair
Deal found 15/9£37
Thu 18/907:00DUB - LTN
Nonstop1h 10mRyanair
Thu 25/908:45LTN - DUB
Nonstop1h 15mRyanair
Deal found 15/9£38
Tue 11/1107:20DUB - LTN
Nonstop1h 15mRyanair
Wed 12/1117:10LTN - DUB
Nonstop1h 15mRyanair
Deal found 15/9£39
Thu 2/1019:35DUB - STN
Nonstop1h 20mRyanair
Sun 5/1009:45STN - DUB
Nonstop1h 20mRyanair
Deal found 16/9£39
Mon 22/906:25DUB - LGW
Nonstop1h 30mRyanair
Wed 24/909:45LGW - DUB
Nonstop1h 25mRyanair
Deal found 15/9£39
Sun 23/1106:20DUB - LTN
Nonstop1h 15mRyanair
Tue 25/1109:00LTN - DUB
Nonstop1h 15mRyanair
Deal found 15/9£40
Thu 6/1116:30DUB - STN
Nonstop1h 20mRyanair
Sun 9/1106:30STN - DUB
Nonstop1h 20mRyanair
Deal found 15/9£40
Fri 31/1011:20DUB - LGW
Nonstop1h 25mRyanair
Fri 7/1121:35LGW - DUB
Nonstop1h 25mRyanair
Deal found 16/9£40
Fri 31/1022:00DUB - STN
Nonstop1h 20mRyanair
Fri 7/1121:45STN - DUB
Nonstop1h 20mRyanair
Deal found 16/9£40

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dublin to London 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 17 September 2025.
Use the filters below to find and compare flights from Dublin to London that are best for you.

Fly from

Dublin

Fly to

London

Route

Depart

Return

Price

DublinLondon

DUB - LGW

DUBLGW

Dublin

Thu 23/10

15:35-17:05

Nonstop1h 30m

London Gatwick

Mon 10/11

17:35-19:00

Nonstop1h 25m

£37

DublinLondon

DUB - LTN

DUBLTN

Dublin

Fri 3/10

11:55-13:05

Nonstop1h 10m

London Luton

Mon 6/10

09:00-10:15

Nonstop1h 15m

£37

DublinLondon

DUB - STN

DUBSTN

Dublin

Fri 12/12

22:00-23:20

Nonstop1h 20m

London Stansted

Mon 15/12

08:30-09:50

Nonstop1h 20m

£37

DublinLondon

DUB - LGW

DUBLGW

Dublin

Fri 10/10

19:55-21:25

Nonstop1h 30m

London Gatwick

Fri 17/10

08:55-10:20

Nonstop1h 25m

£37

DublinLondon

DUB - LGW

DUBLGW

Dublin

Fri 3/10

06:50-08:20

Nonstop1h 30m

London Gatwick

Mon 6/10

21:30-22:55

Nonstop1h 25m

£37

DublinLondon

DUB - LTN

DUBLTN

Dublin

Fri 5/12

19:15-20:30

Nonstop1h 15m

London Luton

Fri 12/12

20:55-22:10

Nonstop1h 15m

£38

DublinLondon

DUB - LTN

DUBLTN

Dublin

Tue 11/11

07:20-08:35

Nonstop1h 15m

London Luton

Wed 12/11

17:10-18:25

Nonstop1h 15m

£39

DublinLondon

DUB - LTN

DUBLTN

Dublin

Sun 30/11

06:20-07:35

Nonstop1h 15m

London Luton

Tue 2/12

09:00-10:15

Nonstop1h 15m

£39

DublinLondon

DUB - LTN

DUBLTN

Dublin

Mon 1/12

07:40-08:55

Nonstop1h 15m

London Luton

Thu 4/12

14:10-15:25

Nonstop1h 15m

£39

DublinLondon

DUB - STN

DUBSTN

Dublin

Fri 12/12

22:00-23:20

Nonstop1h 20m

London Stansted

Sun 14/12

06:30-07:50

Nonstop1h 20m

£39

Flights are sorted by cheapest return flights first.

Deals found on 14/9

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

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

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

Use this chart to determine the optimal time to book a return flight from Dublin to London. Price data was last updated on 12 September 2025.

To ensure you get the cheapest price possible for a flight from Dublin to London, you should look to book at least 56 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Dublin to London (average of £112). Flying from Dublin to London in August is currently the most expensive (average of £164). 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 DUB to LON?

Find hourly flight availability from Dublin to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 September 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 78% on flights from Dublin to London by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly return from Dublin to London. Price data was last updated on 14 September 2025.

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

Weekly flight availability from Dublin to London

Explore weekly flight availability from Dublin to London. 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 17 September 2025.

The most flights from DUB to LON are scheduled on a Monday (113 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (65 on average).

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

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 17 September 2025.
Read reviews from past customers who have flown with Aer Lingus, Ryanair, andBritish Airways from Dublin to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Boarding

7.3

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.5

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.
Aer Lingus
7.2
Good
1,274 reviews
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Boarding

7.3

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.5

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.
Ryanair
6.8
Okay
5,157 reviews
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Boarding

7.3

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.5

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.
British Airways
6.7
Okay
7,363 reviews
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Boarding

7.3

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.5

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.

Related info for your journey

Find useful and relevant information for your journey from Dublin to London. 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 from for flights from Dublin to London?

    Dublin (DUB) is the airport you will fly out of if you book a flight from Dublin to London. You should not have trouble finding flights to London from Dublin; the airport handles an average of 82 outbound flights to London per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Dublin airport to London. It is only a 5.7 mi journey to Dublin (DUB) from Dublin’s city center.

  • How long is the flight from Dublin to London?

    Departing from Dublin to London will take you 1h 20m. The distance from Dublin to London is about 292 mi. Most flights are nonstop.

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

    Cheapflights users have booked flights from Dublin to London round-trip from £28. Other airlines that can offer you cheap pricing are British Airways, from £57, and Aer Lingus, from £98. These flights start at 65% lower than the current average price 3 months from now.

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

    The cheapet airlines for a one-way flight from Dublin to London are Ryanair (£20), Aer Lingus (£39), and British Airways (£43).

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

    When deciding which route to take from Dublin to London consider Dublin - London Heathrow, Dublin - London Southend or Dublin - London City as they are the most popular.

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

    Before booking your flight to London from Dublin, check out the most reliable airlines to get you to your destination on time: Air Canada (80%), British Airways (76%), Aer Lingus( 76%).

  • What are the cheapest flights from Dublin to London?

    Looking at all options, your cheapest flight can be booked for £52. While the most popular route (Dublin - London Heathrow) can be booked for £76 on average, our data indicates £1,246 when flying from Dublin to London.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Dublin to London (average of £112). Flying from Dublin to London in August is currently the most expensive (average of £164). 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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
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Croydon
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Gatwick
Luton
Deal
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Ilford
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Hayes
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Bishop's Stortford
Romford

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Alternative routes for Dublin to London

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Top 3 airlines flying from Dublin to London

Discover the top 3 airlines that operate flights from Dublin to London. 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 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£28Average£69FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£57Average£130FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£98Average£141FlexibilityNo 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 Dublin to London?

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Dublin to London.

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

Need flexible booking options for your flight to London from Dublin? 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 Dublin to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Dublin today and book when prices fit your budget.

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