€16 Find Cheap Flights from London to Ireland – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Ireland departing on 31/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Best Ireland Flight Deals from London

Cheapest return prices found by our users on KAYAK in the last 72 hours
Dublin
Dublindirect€38
Cork
Corkdirect€39
Shannon
Shannondirect€36
Knock
Knockdirect€36
Milltown (Kerry)
Milltown (Kerry)direct€33
Donegal
Donegal1 stop€134
Dublin
Dublindirect€38
Cork
Corkdirect€39
Shannon
Shannondirect€36
Knock
Knockdirect€36
Milltown (Kerry)
Milltown (Kerry)direct€33
Donegal
Donegal1 stop€134

Cheap Flights from London to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Ireland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Ireland

Sat, 11 Jul - Sun, 12 Jul
Ryanair Logo
21:05 - 22:35
STN
-
SNN
1h 30mdirect
Ryanair Logo
07:30 - 09:00
SNN
-
STN
1h 30mdirect
€36Ryanair
Wed, 1 Jul - Wed, 22 Jul
Ryanair Logo
18:55 - 20:25
STN
-
SNN
1h 30mdirect
Ryanair Logo
17:00 - 18:30
SNN
-
STN
1h 30mdirect
€37Ryanair
Tue, 28 Jul - Sun, 2 Aug
Ryanair Logo
21:35 - 23:00
LGW
-
DUB
1h 25mdirect
Ryanair Logo
06:45 - 08:15
DUB
-
LGW
1h 30mdirect
€38Ryanair
Wed, 1 Jul - Tue, 21 Jul
Ryanair Logo
06:15 - 07:35
LTN
-
DUB
1h 20mdirect
Ryanair Logo
21:35 - 22:50
DUB
-
LTN
1h 15mdirect
€38Ryanair
Thu, 9 Jul - Mon, 13 Jul
Multiple Airlines Logo
08:00 - 09:25
STN
-
ORK
1h 25mdirect
Multiple Airlines Logo
20:55 - 22:20
ORK
-
STN
1h 25mdirect
€44Multiple Airlines
Tue, 1 Sep - Sun, 6 Sep
British Airways Logo
06:20 - 07:45
LHR
-
DUB
1h 25mdirect
British Airways Logo
08:35 - 10:10
DUB
-
LHR
1h 35mdirect
€80British Airways
Thu, 15 Oct - Sat, 17 Oct
British Airways Logo
13:05 - 14:35
LHR
-
DUB
1h 30mdirect
British Airways Logo
10:30 - 12:00
DUB
-
LHR
1h 30mdirect
€83British Airways
Tue, 11 Aug - Wed, 26 Aug
Aer Lingus Logo
22:25 - 23:50
LHR
-
ORK
1h 25mdirect
Aer Lingus Logo
20:30 - 21:45
ORK
-
LHR
1h 15mdirect
€96Aer Lingus
Wed, 12 Aug - Tue, 18 Aug
Aer Lingus Logo
22:25 - 23:50
LHR
-
ORK
1h 25mdirect
Aer Lingus Logo
20:30 - 21:45
ORK
-
LHR
1h 15mdirect
€98Aer Lingus
Tue, 14 Jul - Wed, 29 Jul
Multiple Airlines Logo
06:30 - 22:35
SEN
-
DUB
40h 05m
2 stops
Multiple Airlines Logo
05:45 - 16:10
DUB
-
SEN
10h 25m
1 stop
€192Multiple Airlines
Booking Insights

KAYAK's insights & trends for London to Ireland flights

Get data-powered insights and trends into flights from London to Ireland to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest London to Ireland flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ireland from London found in the last 72 hours was to Knock, at €17 return. The most popular route is from London Stansted Airport (STN) to Milltown (Kerry) (KIR), and the cheapest round-trip airline ticket found on this route in the last 5 days was €145.

What is the cheapest time of day to fly to Ireland?

The average price for all round-trip flights from London to Ireland depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Ireland is generally in the afternoon, when retur flights cost €107 on average. Morning departures are around 14% cheaper than evening flights, on average. The most expensive time of day to fly to Ireland is generally in the evening, which is peak travel time and where the average cost of a ticket is €194.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Ireland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to Ireland is January, when tickets cost €75 (return) on average. On the other hand, the most expensive months are December and August, when the average cost of return tickets is €125 and €119 respectively.

What’s the cheapest day of the week to fly from London to Ireland?

The average price of all round-trip flights from London to Ireland clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from London to Ireland, look for departures on Saturdays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from Ireland, Friday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Ireland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from London to Ireland, you should book around 5 weeks before departure, which saves you about 42% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight€16
Best time to beat the crowds (41% less expensive on average)
Most popular time to fly (27% more expensive on average)
Flight from London Stansted Airport to Shannon

Flights from London to Ireland: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from London to Ireland 
DeborahFlew with Aer Lingus
LHR
-
DUB
Jun 2025
Heathrow seems to have a lot of plane traffic so make sure you have a good cushion of time if you have connecting flights. I had a 2 hour layover but ended up having to run to make sure I got to the other gate in time.
Verified travelerFlew with Aer Lingus
LHR
-
DUB
Jun 2025
If you’re doing a transfer speak to someone at the desk don’t use an automated kiosk
KillianFlew with British Airways
LCY
-
DUB
May 2025
Dublin airport a shambles when it comes to collecting luggage or getting a cab. Allow plenty of extra time.
ThomasFlew with Aer Lingus
LHR
-
DUB
Oct 2024
You will likely have to walk a lot more than you might expect to make a connection.

FAQs - booking Ireland flights

  • What direct flights are there from London to Ireland?

    There are several direct flights to Ireland from London, as this entire journey should take no more than 1h 30min to complete. Aer Lingus, Ryanair and British Airways all offer swift, direct flights, and Lufthansa and Swiss Air also service this flight but will include one stop.

  • How can I get assistance as a disabled passenger?

    All airlines will offer service for disabled travellers. You can get wheelchair use, embarkment and disembarkment assistance and bathroom assists if you have reduced mobility. If you are visually impaired, you can find braille safety cards and assistance for embarking and disembarking the plane. Other disability needs such as autism, anxiety and hearing impairment can also be assisted. It is often best to consult your airline before you fly to ensure proper service.

  • How can I work online on the plane?

    All airlines servicing this route have now rolled out Wifi for international flights. You will be able to get connected from the sky and work online as soon as the cabin crew gives you the go-ahead.

  • If I arrive at Dublin Airport, will I be able to get medical treatment?

    Dublin Airport has a full medical staff on hand for any emergency that may occur during your flight or at the airport. If you are ill on the plane, let the cabin crew call the airport to arrange assistance as you land. Should you need additional service to what the airport's medical centre can provide, the airport will arrange an ambulance.

  • How does KAYAK find such low prices on flights from London to Ireland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Ireland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Ireland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to Ireland is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London to Ireland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Ireland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from London to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Ireland

  • When flying from London to Ireland, you will be lucky enough to be able to use any of the London-serving airports for the trip. Heathrow (LHR) and London City Airport (LCY) are the two airports that are closer to London central and are good choices if you are based centrally. Gatwick (LGW), Luton (LTN) and Stansted (STN) are all slightly further afield, so take into account your ground-travel time when planning your itinerary.
  • If you would like to take some great British treats to your Irish friends, all London-serving airports offer great duty-free shopping options. Heathrow and Gatwick have convenient click-and-collect services, which can reduce time. Simply browse online and collect at the designated point of the airport for a seamless transaction.
  • Although your flight to Ireland from London will be rather short, if you have a baby, you may want to ensure they sleep comfortably through it. If you fly with British Airways, you can get a bassinet for your little one, to get them down before the plane takes off. All London airports will also let you board first if your baby is under two years of age.
  • If you are planning on visiting Dublin, ensure your flight arrives at Dublin Airport (DUB), on the western coast of the country. You can also catch flights to the central region of Limerick and land at Shannon Airport (SNN) or the southern region of Cork and land at Cork Airport (ORK). Although Ireland is essentially small, direct city-to-city flights are always good if you don’t have the time for ground transportation.
  • If you are planning on taking your service animal on the plane, be aware that, although this is welcomed, you will have to follow the procedure of alerting the airline at least 48 hours before the flight, making sure the animal’s paperwork is up to date and they have all their latest inoculations.

Reviews of the top airlines flying from London to Ireland

 
Need help choosing which airline to fly with from London to Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.9
RyanairOverall score based on 5402 reviews
6.0Food
7.5Crew
5.7Entertainment
6.5Comfort
6.7Boarding
Airline reviews

Enough seat availability for us to move a little and so sit together - but the flight was half an hour late

8.0 Excellentsteve, May 2026
BRS - ALC
Read more Ryanair reviews

Enough seat availability for us to move a little and so sit together - but the flight was half an hour late

I didn't eat any food so can't comment on that. The prices on the plane are extortionate (as are all prices on planes). Everything else was seemless and a great experience

I need assistance and I could not fault it at all. I suffer anxiety and I was always put at ease by assistance staff, and the banter was good. On board the staff was so very nice and kind and showed empathy. Thank you to them. It was my first time travelling since I lost my husband and was so grateful to them.

I liked almost everything (e.g. ease of booking, price, punctuality, efficiency, friendliness, courtesy). A slam landing in Dublin airport took some of the gloss off it, though. Being able to paste here the text of the review of the same flight that I just wrote for Ryanair would make me feel better about Kayak too.

Great flight just took some time to board even when lining up early for the flight, even taking off took longer then expected.

Take off was great but landing is always with a bump.

Staff were very professional. Much better than the outgoing flight from Dublin. Seat cushions were practically non existent. Making for a very uncomfortable flight.

Flight was delayed by 1 hour 45 minutes. Aircraft was cramped, dirty and uncomfortable. Boarding staff more interested in charging you for oversize baggage than getting you on board. Overall not a pleasant experience.

They were extremely unprofessional and unhelpful at check in. They did not understand laws related to Spanish residents flying with family It was very discriminatory the way we were treated.

A delay of almost 3 hours. It was evident that the staff wanted us to board urgently, to the point of rudeness, to avoid paying compensation

I flew four flights on British Airways within two weeks. I was unable to download the boarding pass to my phone for any of the four flights. I could check-in for my flight but the system would not give me boarding pass. I tried multiple ways and multiple times. I discovered many other passengers also had the same issue with their boarding passes. No explanation or acknowledgement by BA.

The crew and flight was fine and enjoyable…unfortunately, when I arrived to Bari and received my checked luggage(that I bought for this first trip to Europe), one of bags had a huge dent in it and the other had a completely damaged/broken wheel that made it very difficult to travel the rest of my time in Italy. Very disappointing and frustrating!

The plane was a long way from departure lounge. The plane looked tired but got us there.

Lovely big plane. Excellent take off and landing. Cabin crew were so nice. Flight in time no delays

Because our ABZ-LHR flight was cancelled by BA for reasons they refuse to tell us--not weather--we did not make this flight and were booked on the following day. BA offered no assistance to us on the phone or in the airport, and we had to find a hotel at Heathrow on our own.

Horrible - flight was delayed by 6 hours - we boarded, were made to de-board due some technical fault; aircraft changed; special meals request on new flight - all went awry. Landed in Dulles airport; breezed thru immigration; as Business Class passengers or baggage was delivered almost 90 minutes after landing; air tags indicated the bags were just near the carousel but the unhelpful BA staff - Maria and Ghina refused to give any update - palming it off on some imaginary invisible “manager” despite air tags evidence showing it right there. So about 50-60 passengers waiting and getting infuriatingly impatient for their bags coz one container was not delivered. Finally after much argument by some other passengers Maria condescended to go to the “ramp” and within 5 minutes the baggage was delivered miraculously. Question is why couldn’t she have done it one hour earlier ? Poor poor experience once again on Business Class BA.

Poor service, antiquated plane with 2-3-2. B-class config upstairs. Tight and not comfortable—not what I expected for paying B-class! AND my bag didn’t make the transfer, bag will be delivered the day after it lands!

Cheap Flight Fares would not provide booking info. I canceled the reservation and we arbitrated with American Express. They provided erroneous info to Amex and it was determined that C.F.F. deserved the price of the ticket. Worse experience I've ever had.

Seating space is appalling. Seats and all surrounding area in "Economy" is built for individuals shorter than 4' 10" and below 120 lbs. Ridiculous. While I'm not expecting fine dining, the food was the worst airplane food that I can recall.

Business class lounge for my gate was closed and no email was sent, causing me to walk back and forth to different gates, etc for over 20 minutes one way. Flight entertainment was mediocre with very poor choices especially for business class cabin. Original flight was cancelled and rebooking was difficult and no reason given for cancellation.

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

Cabin class types available on flights to Ireland

Cabin classes available on flights to Ireland. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.