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Cheap flights from Ireland to the United Kingdom 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to United Kingdom

Keep the following information in mind while searching for Ireland to United Kingdom flight deals. Data was last updated 11 November 2025.

Round-trip from

£34

One-way from

£15

Popular in

December

Cheapest in

January

Average price

£78

Good round-trip deal

£15 or less

Good one-way deal

£14 or less
Ryanair
  • Ryanair
  • 10/12-10/12
  • Nonstop
  • 1h 50m total
  • Ireland to United Kingdom
Search Deals
Ryanair
  • Ryanair
  • 8/12
  • Nonstop
  • 1h 25m total
  • Ireland to United Kingdom
Search Deals
High demand for flights, 9% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Ireland to United Kingdom.
Search Deals
Price to beat on a one-way flight from Ireland to United Kingdom.
Search Deals

Find flight deals from Ireland to United Kingdom

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to United Kingdom
Explore the most affordable flight options available from Ireland to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 November 2025.

Wed 10/1206:50DUB - LPL
Nonstop0h 55mRyanair
Wed 10/1213:00LPL - DUB
Nonstop0h 55mRyanair
Deal found 10/11£34
Thu 27/1110:05DUB - MAN
Nonstop1h 00mRyanair
Mon 1/1216:25MAN - DUB
Nonstop1h 00mRyanair
Deal found 9/11£40
Sat 6/1217:00DUB - STN
Nonstop1h 20mMultiple Airlines
Mon 8/1206:30STN - DUB
Nonstop1h 20mMultiple Airlines
Deal found 9/11£40
Thu 4/1206:40DUB - LGW
Nonstop1h 30mRyanair
Mon 8/1209:40LGW - DUB
Nonstop1h 25mRyanair
Deal found 9/11£40
Sat 6/1218:55DUB - LTN
Nonstop1h 15mRyanair
Mon 8/1206:00LTN - DUB
Nonstop1h 15mRyanair
Deal found 9/11£41
Thu 18/1207:00DUB - LPL
Nonstop0h 55mRyanair
Sun 21/1223:00LPL - DUB
Nonstop0h 55mRyanair
Deal found 9/11£41
Thu 27/1107:20DUB - LTN
Nonstop1h 15mRyanair
Mon 1/1206:00LTN - DUB
Nonstop1h 15mRyanair
Deal found 10/11£42
Sat 6/1220:35DUB - LGW
Nonstop1h 25mRyanair
Mon 8/1220:35LGW - DUB
Nonstop1h 25mRyanair
Deal found 10/11£42
Thu 18/1206:10DUB - EDI
Nonstop1h 05mMultiple Airlines
Thu 8/117:55EDI - DUB
Nonstop1h 05mMultiple Airlines
Deal found 9/11£43
Mon 1/1209:35ORK - LGW
Nonstop1h 25mRyanair
Wed 3/1211:25LGW - ORK
Nonstop1h 25mRyanair
Deal found 10/11£43
Sat 6/1214:10DUB - LTN
Nonstop1h 15mRyanair
Sat 13/1216:40LTN - DUB
Nonstop1h 15mRyanair
Deal found 10/11£43
Mon 1/1206:20DUB - EDI
Nonstop1h 05mRyanair
Thu 4/1207:45EDI - DUB
Nonstop1h 05mRyanair
Deal found 7/11£43

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ireland to United Kingdom 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 11 November 2025.
Use the filters below to find and compare flights from Ireland to the United Kingdom that are best for you.

Fly from

Ireland

Fly to

United Kingdom

Route

Depart

Return

Price

DublinLiverpool

DUB - LPL

DUBLPL

Dublin

Wed 10/12

06:50-07:45

Nonstop0h 55m

Liverpool J. Lennon

Wed 10/12

13:00-13:55

Nonstop0h 55m

£34

DublinManchester

DUB - MAN

DUBMAN

Dublin

Sat 10/1

15:00-16:00

Nonstop1h 00m

Manchester

Sun 11/1

22:15-23:15

Nonstop1h 00m

£38

DublinLondon

DUB - STN

DUBSTN

Dublin

Sat 6/12

17:00-18:20

Nonstop1h 20m

London Stansted

Mon 8/12

06:30-07:50

Nonstop1h 20m

£40

DublinLondon

DUB - STN

DUBSTN

Dublin

Wed 24/12

07:00-08:20

Nonstop1h 20m

London Stansted

Wed 31/12

21:00-22:20

Nonstop1h 20m

£41

DublinLondon

DUB - LGW

DUBLGW

Dublin

Sat 6/12

20:35-22:00

Nonstop1h 25m

London Gatwick

Mon 8/12

20:35-22:00

Nonstop1h 25m

£42

CorkLondon

ORK - LGW

ORKLGW

Cork

Mon 1/12

09:35-11:00

Nonstop1h 25m

London Gatwick

Wed 3/12

11:25-12:50

Nonstop1h 25m

£43

DublinLondon

DUB - LTN

DUBLTN

Dublin

Sat 6/12

15:00-16:15

Nonstop1h 15m

London Luton

Sun 7/12

08:05-09:20

Nonstop1h 15m

£43

DublinLondon

DUB - LTN

DUBLTN

Dublin

Thu 27/11

07:20-08:35

Nonstop1h 15m

London Luton

Mon 1/12

06:00-07:15

Nonstop1h 15m

£43

DublinLondon

DUB - LTN

DUBLTN

Dublin

Thu 11/12

21:50-23:05

Nonstop1h 15m

London Luton

Sat 13/12

16:40-17:55

Nonstop1h 15m

£43

DublinLondon

DUB - LTN

DUBLTN

Dublin

Sat 6/12

15:00-16:15

Nonstop1h 15m

London Luton

Mon 8/12

06:00-07:15

Nonstop1h 15m

£43

Flights are sorted by cheapest return flights first.

Deals found on 10/11

Showing 1-10 of 60 results
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6

Best time to book a flight from Ireland to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Ireland 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 Ireland to the United Kingdom

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

Currently, February is the cheapest month in which you can book a flight from Ireland to United Kingdom (average of £12). Flying from Ireland to United Kingdom in September is currently the most expensive (average of £30). 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 IE to GB?

Find hourly flight availability from Ireland to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 November 2025.

It’s optimal to fly from Ireland to United Kingdom in the evening. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Ireland to United Kingdom?

Use this chart to determine the cheapest time to fly return from Ireland to United Kingdom. Price data was last updated on 16 December 2024.

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

Weekly flight availability from Ireland to United Kingdom

Explore weekly flight availability from Ireland to United Kingdom. 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 11 November 2025.

The most flights from IE0 to GB0 are scheduled on a Saturday (69 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (36 on average).

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated 11 November 2025.
See what other customers who have flown with Aer Lingus, Ryanair, andBritish Airways from Ireland to the United Kingdom have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,368 reviews
Check prices

Overall

7.2

Comfort

7.1

Boarding

7.4

Crew

8.0

Entertainment

6.9

Food

6.6

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

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 from Dublin to Washington (Flight EI 119 on October 25, 2025) 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. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
Aer Lingus
7.2
Good
1,368 reviews
Aer Lingus
7.2
Good
1,368 reviews
Check prices

Overall

7.2

Comfort

7.1

Boarding

7.4

Crew

8.0

Entertainment

6.9

Food

6.6

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

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 from Dublin to Washington (Flight EI 119 on October 25, 2025) 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. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
Ryanair
6.8
Okay
5,190 reviews
Aer Lingus
7.2
Good
1,368 reviews
Check prices

Overall

7.2

Comfort

7.1

Boarding

7.4

Crew

8.0

Entertainment

6.9

Food

6.6

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

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 from Dublin to Washington (Flight EI 119 on October 25, 2025) 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. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
British Airways
6.7
Okay
7,510 reviews
Aer Lingus
7.2
Good
1,368 reviews
Check prices

Overall

7.2

Comfort

7.1

Boarding

7.4

Crew

8.0

Entertainment

6.9

Food

6.6

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

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 from Dublin to Washington (Flight EI 119 on October 25, 2025) 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. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
Ryanair
6.3
Okay
Aer Lingus
7.2
Good
1,368 reviews
Check prices

Overall

7.2

Comfort

7.1

Boarding

7.4

Crew

8.0

Entertainment

6.9

Food

6.6

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

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 from Dublin to Washington (Flight EI 119 on October 25, 2025) 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. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.

Related info for your journey

Find useful and relevant information for your journey from Ireland to United Kingdom. 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 Ireland to United Kingdom?

    For as low as £34, Ryanair can have you in United Kingdom from Ireland in 55m. Airlines will cover a distance of 140 mi. All flights are typically direct.

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

    One-way options have recently been found by users for as low as £15 on Ryanair. Other airlines that offer cheap prices include Ryanair from £18 and Aer Lingus from £21 one-way.

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

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

  • How can I find direct flights from Ireland to United Kingdom?

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

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

    Yes. Cheapflights offers flight deals from Ireland to United Kingdom 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 Ireland to United Kingdom?

    Currently, February is the cheapest month in which you can book a flight from Ireland to United Kingdom (average of £12). Flying from Ireland to United Kingdom in September is currently the most expensive (average of £30). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ireland to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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Madrid to London City flights
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Vienna to Heathrow flights
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Frankfurt to Stansted flights
Vienna to London City flights
Duesseldorf Intl to Luton flights
London City to Istanbul flights
Duesseldorf Intl to London City flights
Vienna to Luton flights
Vienna to Stansted flights
Heathrow to Istanbul flights
Nantes to Gatwick flights
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Marseille to Heathrow flights
Frederic Chopin to Stansted flights
Madrid to Southend flights
Lyon to Stansted flights
Madrid to Luton flights
Nantes to Heathrow flights
Nantes to Stansted flights
Barcelona-El Prat to Heathrow flights
Heathrow to Frederic Chopin flights
Barcelona-El Prat to Luton flights
Heathrow to Charles de Gaulle flights
Gatwick to Leonardo da Vinci/Fiumicino flights
Marseille to Stansted flights

Top 4 airlines flying from Ireland to United Kingdom

Discover the top 4 airlines that operate flights from Ireland to United Kingdom. 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 11 November 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£26Average£71FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
RyanairCheapest£26Average£39FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£29Average£109FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£74Average£135FlexibilityNo cancel feeOn-time70%
Search British Airways 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 Ireland to United Kingdom?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ireland to United Kingdom. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

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 Ireland to United Kingdom.

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

Yes, we can. To see specific flights from Ireland to United Kingdom with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on Ireland to United Kingdom flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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