£21 Find Cheap Flights from Ireland to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 16/6. 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

KAYAK searches hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
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Flights Deals

Cheap Flight Deals from Ireland to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Ireland to London 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.

Recent return flight deals from Ireland to London

KAYAK's recommended return flight deals from the most popular airlines that fly from Ireland to London.
Discover the best prices for you by selecting your travel dates on KAYAK.
Ryanair Logo
10:20 - 11:50ORK-LGW
1h 30mdirect
Ryanair Logo
12:30 - 14:00LGW-ORK
1h 30mdirect
£49Ryanair
Find Deal
Wed, 18 Jun - Wed, 25 Jun
Ryanair Logo
09:55 - 11:05DUB-LTN
1h 10mdirect
Ryanair Logo
21:05 - 22:20LTN-DUB
1h 15mdirect
£49Ryanair
Find Deal
Fri, 9 May - Fri, 16 May
British Airways Logo
10:50 - 12:30DUB-LHR
1h 40mdirect
British Airways Logo
06:15 - 07:40LHR-DUB
1h 25mdirect
£69British Airways
Find Deal
Wed, 16 Jul - Wed, 23 Jul
British Airways Logo
20:20 - 21:40DUB-LHR
1h 20mdirect
British Airways Logo
06:20 - 07:45LHR-DUB
1h 25mdirect
£71British Airways
Find Deal
Wed, 4 Jun - Tue, 10 Jun
 Logo
06:50 - 08:00DUB-LTN
1h 10mdirect
 Logo
05:20 - 23:59LTN-DUB
18h 39m1 stop
Thu, 12 Jun - Thu, 19 Jun
 Logo
19:05 - 07:00DUB-LGW
11h 55m1 stop
 Logo
21:30 - 22:55LGW-DUB
1h 25mdirect
Sat, 7 Jun - Sat, 21 Jun
Aer Lingus Logo
18:00 - 19:25DUB-LHR
1h 25mdirect
Aer Lingus Logo
20:10 - 21:30LHR-DUB
1h 20mdirect
£84Aer Lingus
Find Deal
Sat, 7 Jun - Sat, 21 Jun
Aer Lingus Logo
18:00 - 19:25DUB-LHR
1h 25mdirect
Aer Lingus Logo
16:50 - 18:15LHR-DUB
1h 25mdirect
£84Aer Lingus
Find Deal
Sat, 7 Jun - Sat, 21 Jun
Vueling Logo
19:30 - 07:00DUB-LGW
11h 30m1 stop
Vueling Logo
19:50 - 07:35LGW-DUB
11h 45m1 stop
£98Vueling
Find Deal
Tue, 13 May - Wed, 14 May
Vueling Logo
19:30 - 07:00DUB-LGW
11h 30m1 stop
Vueling Logo
19:50 - 12:50LGW-DUB
17h 00m1 stop
£103Vueling
Find Deal
Tue, 13 May - Tue, 20 May
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KAYAK's insights & trends for flights to London

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

What is the cheapest day to fly to London?

The average price of all round-trip flights to London clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to London is Friday where round-trip tickets can be as cheap as £280. On the other hand, the most expensive day to fly is Monday, where round-trip prices are £426 on average.

What is the cheapest month to fly to London?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to London, 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 to London is January, where tickets cost £54 on average for return flights. On the other hand, the most expensive months are May and April, where the average cost of tickets from Ireland is £105 and £103 respectively. For one-way flights, the best month to travel is January with an average price of £41.

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

The average price for all round-trip flights to London depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to London is generally at night, when round-trip flights cost £166 on average. The most expensive time of day to fly to London is generally in the evening, which is peak travel time and where the average cost of a ticket is £700.

What is a good deal for flights to London?

If you’re looking for cheap airfare to London, 25% of our users found tickets to London for the following prices or less: From Knock £31 return, from Shannon £49 return, from Cork £54 return.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to London, 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, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Which is the cheapest airport to fly into in London?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in London is London Stansted Airport (STN), with an average flight price of £90.

Good to know - Cheap tickets from Ireland to London

Low season

January

High season

August

Cheapest flight

£21
Best time to beat the crowds (47% less expensive on average)
Most popular time to fly (24% more expensive on average)
Flight from Dublin to London Luton Airport

FAQs - booking London flights

  • Which London airport is closest to central London?

    There are 6 airports in London. The closest airport to London’s city centre is London City (8 miles). London Heathrow Airport, London Gatwick Airport, and London Luton Airport are 14 miles, 24 miles, and 28 miles from the centre of London, respectively.

  • How much is a flight to London?

    On average, a flight to London costs £148. The cheapest price found on KAYAK in the last 2 weeks cost £12 and departed from Cork Airport.

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

    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 to London.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London 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 to London?

    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 to London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to London are there each week?

    Each week there are around 787 direct flights from within Ireland to London. The most common day for departures is Friday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to London

  • Looking for a cheap flight from Ireland to London? 25% of our users found flights on this route for £96 or less one-way and £246 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London flight deals.

Top 3 airlines serving from Ireland to London

 
See real verified KAYAK customer reviews for airlines flying to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to London. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to London? 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.
7.0
Aer LingusOverall score based on 1076 reviews
6.4Food
7.0Comfort
7.2Boarding
6.7Entertainment
7.9Crew
Airline reviews

It was ok not that much because I always travel with Emirates airlines, Etihad, airlines, Qatar airlines compare to them food and comfortable was too low . Staff was good . Helpful

8.0 ExcellentAnonymous, Apr 2025DUB - JFK
Read more Aer Lingus reviews

It was ok not that much because I always travel with Emirates airlines, Etihad, airlines, Qatar airlines compare to them food and comfortable was too low . Staff was good . Helpful

I believe it was short flight in plane I understand not that much compared to other airlines but weighting for checkin was too long need extra person for checkin or Atleast someone to let the customer knows don’t worry someone will be here shortly.

Noted in last review. Good to know, though air Lingus on European flights does not offer any food or drink, even though we were on the plane for 3 1/2 hours from Naples to Dublin everything you had to purchase even water.

Seats were alarming close to the row in front of you. I didn’t do the measurements online, which I’m sure they’re available, but it seemed much tighter than other planes, but the airplane itself was well maintained and looked fairly new. My only complaint on the staff was that we’re on an international flight. Normally they give you wine with dinner and the flight attendant decided to pull some strict restrictions and wouldn’t give more than one glass of wine per person, and you could not share with your spouse, which seemed ridiculous when we have four people on the plane with us and only one person ordered wine asked for a second one and she said oh absolutely not. It’s only one per person Which on a transcontinental usually is not the case. They’re very attentive on making sure everyone is as comfortable as possible.

Booked through Kayak, couldnt take flight, Kayak punted to Orbiz, Orbiz punted to Aer Lingus, Aer Lingus said sorry about your luck, try Kayak/Orbiz. Terrible customer service collecting air fares and not even offering a voucher when customers cant take flight

There was no flight. I booked a flight from Toronto to Bordeaux with a stopover in Dublin. I arrived in Dublin and the flight number I had didn't exist and the flight going to Bordeaux I wasn't on. I had to book a new flight with a different airline for later in the day and pay out of pocket.

Gate agents kind of serious. Had to wait til arriving at gate to choose seats. Thankfully they did give us seats together! And grateful the honored our age, giving us seats at the front.

This flight was delayed and caused me to miss my connecting flight from New York to Boston. I had to rent a car and drive myself home to avoid waiting another 5 hours in the airport.

There was a very drunk and disruptive passenger who was on the plane, right behind me. He was already drunk before boarding but was still let on the plane. He kept kicking and hitting the back of my chair the entire flight. It was an early morning flight and had zero rest on that leg

Really lovely trip and flight. The flight staff were so accommodating and warm throughout!

Awful as usual the air stewardess loved her own voice and would not stop talking on coms for 2hrs please please please shut up I can’t hear my headphones and don’t want to buy juty free

Big delay on run way not much explanation why, missed a important meeting in Dublin, maybe if they did nt persist measuring everyone bag over 2 cm we would have got off on time.

The lady at the boarding gate was so rude. She was challenging people being in priority and looking them up and down as if they weren’t dressed for first class. This was Ryan air priority. We all sit in the same seats. She loudly called out to embarrass a man who she believed had cheated and got in the priority line. He had a valid priority ticket and even worked for Ryanair. Also challenging visas insisting people download them until they proved on the government website it wasn’t required to print. The Ryanair employee who was challenged said she is always like this. She also pulled people from regular boarding as they were fashionably dressed and upgraded them to priority and changed their seats. That was comical. I think she felt she should be working for Emirates first class, although they would t have stood for her rude behaviour

On time boarding, on time departure and early arrival. As it should be. Yes, the comfort and benefits are very poor, but therefore the ticket is 6 times cheaper than with a flag carrier. So I am not complaining about it. You get what you pay for.

The punctuality of f the flight was super: we left on time and arrived about 20 minutes early - and the cabin crew were both friendly and efficient. The only downside was that Ryanair appears to have resumes its old obsession with sizing cabin bags again after a long and welcome absence.

People at the gate were the worst I ever met from Ryanair

I liked nothing. An extremely uncomfortable flight, staff were rude, no ice for my drink. 4 hours of misery

Good value for the money. Good leg room. Take off and landing very good.

Seats are very small, I’m not a big person, but the person beside me was using his seat and half of mine… and this person was a bit gross but not a lot…

How terrible! Extremely bad! I can not even wait for 5 minutes, because the Berlin airport does not work in the security facilities and can handle people. No communication, although we were assured by about 50 travelers that the airline is informed and is waiting for us.

Boarding was delayed and we had to get on buses to plane so group # didn't matter. No food or drinks served gratis. Seats were small, knees smashed into the seat ahead, didn't recline. Crew was excellent though.

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

Our original booking with Kayak -our first experience -was exactly what we wanted and worked well. Updates were friendly and reassuring as were the contacts with UnderPricer so a big win-win. We learned a lot on your reliability and will definitely put you on our organisational list for the future.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

Plane and seats ok. Dinners going and coming back were not fantastic. Breakfast from Seattle to London fine with bagel, cheese and fried egg. Second meal on London to Seattle not my favorite of kind of pizza sauce in a pastry. Came with water about three different times on each of my long flights. Staff on all very friendly and helpful.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

We ordered kids meals - which were not kid friendly at all! (the breakfast that is - scrambled eggs on a bed of spinach and asparagus?)

Uncomfortable seats. Crazy seat assignments separating families when they could easily have put them together. Good communication from pilot about arrival time after delay in departure. Toilet ran out of water in sink. Snack box poor for flight of this length.

The bed in Club class was not very comfortable, everything else was good.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Luton
Southend-on-Sea
Winchester
Croydon
Slough
Stansted
Chichester
Maidstone
Folkestone
Colchester
Crawley
Chelmsford
Hastings
Bedford
Watford
Basingstoke
Newbury

Everything you need to know for your flight to London

Cabin class types available on flights to London

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

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