Cheap flights from Ireland to London from £20

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to London departing on 10/11. 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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Find the cheapest flights from Ireland to London

Recent return flight deals from Ireland to London

Ryanair Logo
21:45 - 23:05ORK-LTN
1h 20mdirect
Ryanair Logo
20:00 - 21:20LTN-ORK
1h 20mdirect
£32Ryanair
Find Deal
Mon, 13 Oct - Mon, 20 Oct
Ryanair Logo
14:35 - 15:55ORK-LTN
1h 20mdirect
Ryanair Logo
12:50 - 14:10LTN-ORK
1h 20mdirect
£32Ryanair
Find Deal
Tue, 14 Oct - Tue, 21 Oct
Multiple Airlines Logo
08:30 - 09:50DUB-STN
1h 20mdirect
Multiple Airlines Logo
17:00 - 18:20STN-DUB
1h 20mdirect
£41Multiple Airlines
Find Deal
Fri, 31 Oct - Fri, 7 Nov
Ryanair Logo
08:30 - 09:50DUB-STN
1h 20mdirect
Ryanair Logo
06:30 - 07:50STN-DUB
1h 20mdirect
£49Ryanair
Find Deal
Fri, 31 Oct - Fri, 7 Nov
Ryanair Logo
08:30 - 09:50DUB-STN
1h 20mdirect
Ryanair Logo
06:30 - 07:50STN-DUB
1h 20mdirect
£53Ryanair
Find Deal
Fri, 7 Nov - Mon, 10 Nov
Multiple Airlines Logo
21:25 - 08:40DUB-STN
11h 15m1 stop
Multiple Airlines Logo
10:15 - 11:35STN-DUB
1h 20mdirect
£68Multiple Airlines
Find Deal
Fri, 7 Nov - Sun, 9 Nov
Aer Lingus Logo
16:55 - 18:20SNN-LHR
1h 25mdirect
Aer Lingus Logo
14:40 - 16:10LHR-SNN
1h 30mdirect
£71Aer Lingus
Find Deal
Wed, 15 Oct - Thu, 16 Oct
Aer Lingus Logo
12:00 - 13:25DUB-LHR
1h 25mdirect
Aer Lingus Logo
07:40 - 09:00LHR-DUB
1h 20mdirect
£73Aer Lingus
Find Deal
Tue, 14 Oct - Tue, 21 Oct
British Airways Logo
10:55 - 12:30DUB-LHR
1h 35mdirect
British Airways Logo
15:40 - 17:05LHR-DUB
1h 25mdirect
£76British Airways
Find Deal
Wed, 22 Oct - Wed, 22 Oct
British Airways Logo
10:55 - 12:30DUB-LHR
1h 35mdirect
British Airways Logo
15:35 - 17:05LHR-DUB
1h 30mdirect
£77British Airways
Find Deal
Tue, 11 Nov - Tue, 11 Nov

Aer Lingus flights from Ireland to London

Our best Aer Lingus deals on Ireland to London flight tickets
Aer Lingus
15 Oct
SNN16:55Shannon
1h 25m
LHR18:20London Heathrow
16 Oct
LHR14:40London Heathrow
1h 30m
SNN16:10Shannon
Aer Lingus
14 Oct
DUB12:00Dublin
1h 25m
LHR13:25London Heathrow
21 Oct
LHR07:40London Heathrow
1h 20m
DUB09:00Dublin
Aer Lingus
13 Oct
DUB18:00Dublin
1h 25m
LHR19:25London Heathrow
20 Oct
LHR21:10London Heathrow
1h 20m
DUB22:30Dublin

British Airways flights from Ireland to London

Our best British Airways deals on Ireland to London flight tickets
British Airways
22 Oct
DUB10:55Dublin
1h 35m
LHR12:30London Heathrow
22 Oct
LHR15:40London Heathrow
1h 25m
DUB17:05Dublin
British Airways
11 Nov
DUB10:55Dublin
1h 35m
LHR12:30London Heathrow
11 Nov
LHR15:35London Heathrow
1h 30m
DUB17:05Dublin
British Airways
1 Dec
DUB10:45Dublin
1h 35m
LHR12:20London Heathrow
4 Dec
LHR18:20London Heathrow
1h 25m
DUB19:45Dublin

momondo Fare Finder

 
Customise your flight search to find flights from Ireland 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, momondo users made 279,928 searches. Data last updated 16 September 2025.
Use the filters below to find and compare flights from Ireland to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CorkLondon

ORK - LTN

ORKLTN

Cork

Mon 13/10

21:45-23:05

Nonstop1h 20m

London Luton

Mon 20/10

20:00-21:20

Nonstop1h 20m

£32

CorkLondon

ORK - LTN

ORKLTN

Cork

Tue 14/10

14:35-15:55

Nonstop1h 20m

London Luton

Tue 21/10

12:50-14:10

Nonstop1h 20m

£32

DublinLondon

DUB - STN

DUBSTN

Dublin

Fri 31/10

08:30-09:50

Nonstop1h 20m

London Stansted

Fri 7/11

17:00-18:20

Nonstop1h 20m

£41

DublinLondon

DUB - STN

DUBSTN

Dublin

Fri 31/10

08:30-09:50

Nonstop1h 20m

London Stansted

Fri 7/11

06:30-07:50

Nonstop1h 20m

£49

DublinLondon

DUB - STN

DUBSTN

Dublin

Fri 7/11

08:30-09:50

Nonstop1h 20m

London Stansted

Mon 10/11

06:30-07:50

Nonstop1h 20m

£53

DublinLondon

DUB - STN

DUBSTN

Dublin

Fri 7/11

21:25-08:40

1 stop11h 15m

London Stansted

Sun 9/11

10:15-11:35

Nonstop1h 20m

£68

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Wed 15/10

16:55-18:20

Nonstop1h 25m

London Heathrow

Thu 16/10

14:40-16:10

Nonstop1h 30m

£71

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 14/10

12:00-13:25

Nonstop1h 25m

London Heathrow

Tue 21/10

07:40-09:00

Nonstop1h 20m

£73

DublinLondon

DUB - LHR

DUBLHR

Dublin

Wed 22/10

10:55-12:30

Nonstop1h 35m

London Heathrow

Wed 22/10

15:40-17:05

Nonstop1h 25m

£76

DublinLondon

DUB - LHR

DUBLHR

Dublin

Tue 11/11

10:55-12:30

Nonstop1h 35m

London Heathrow

Tue 11/11

15:35-17:05

Nonstop1h 30m

£77

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to London from

How to get the cheapest flight ticket from Ireland to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London?

The cheapest month to fly to London from Ireland is in January. Flight prices, which tend to average around £55, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Ireland averaging around £63.

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

Our data shows that Friday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £171. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to London for around £431.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £115. Flights in the afternoon are often more expensive, with an average ticket price of £520.

What is the cheapest Ireland to London flight route?

Fly from Cork to London Stansted for the best Ireland - London flight prices

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

You are more likely to see cheaper flights to London from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £120 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Ireland for as low as £77 on momondo.

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

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

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

Cheap Ireland to London flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to London

Best price found

£15

Fastest flight time

1h 05m

Direct flights

Every day

Airports in London

1 airport
The best one-way flight to London from Ireland in the past 72 hours is £15. The best return flight deal from Ireland to London found on momondo in the last 72 hours is £32.
The fastest flight from Ireland to London takes 1h 05m
Direct flights go from Ireland to London every day.
There is 1 airport near London: London Luton (LTN)
  • When did momondo last update prices for flights from Ireland to London?

    Prices for flights from Ireland to London were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to London.

  • What documentation or ID do you need to fly to London?

    The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from Ireland to London

Compare and see reviews for airlines that fly from Ireland to London with momondo
Airline
Rating
Free Cancellation
Price
RyanairPriceFrom £26Free CancellationRating
6.8
5,157 reviews
Search Ryanair flights
British AirwaysPriceFrom £57Free CancellationRating
6.7
7,363 reviews
Search British Airways flights
Aer LingusPriceFrom £70Free CancellationRating
7.2
1,274 reviews
Search Aer Lingus flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Luton
Milton Keynes
Maidstone
Gatwick
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Worthing
Chelmsford
Dover
Hayes
Dartford
Winchester
Hounslow
Stansted

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to London?

Finding the right flight to London from Ireland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

Can I find flights from Ireland to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from Ireland with this policy.

How can momondo help me find flights from Ireland to London?

Once you have performed a search for Ireland to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ireland to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ireland to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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1 adult
Thu 16/10
Thu 23/10

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London