€25 Find Cheap Flights 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 12/9. 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

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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Booking Insights
Flight Deals

Cheap Flights to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to London

Wed, 8 Oct - Wed, 15 Oct
Ryanair Logo
08:15 - 09:25DUB-LTN
1h 10mdirect
Ryanair Logo
10:00 - 11:15LTN-DUB
1h 15mdirect
€50Ryanair
Find Deal
Tue, 9 Sep - Tue, 16 Sep
Ryanair Logo
19:25 - 20:55DUB-LGW
1h 30mdirect
Ryanair Logo
09:40 - 11:05LGW-DUB
1h 25mdirect
€50Ryanair
Find Deal
Wed, 3 Dec - Sat, 6 Dec
British Airways Logo
13:10 - 14:35DUB-LHR
1h 25mdirect
British Airways Logo
06:30 - 07:55LHR-DUB
1h 25mdirect
€84British Airways
Find Deal
Wed, 18 Feb - Fri, 20 Feb
British Airways Logo
13:10 - 14:35DUB-LHR
1h 25mdirect
British Airways Logo
06:30 - 07:55LHR-DUB
1h 25mdirect
€85British Airways
Find Deal
Wed, 17 Sep - Wed, 24 Sep
 Logo
17:20 - 22:55DUB-LTN
5h 35m1 stop
 Logo
13:00 - 14:15LTN-DUB
1h 15mdirect
Wed, 17 Sep - Wed, 24 Sep
 Logo
06:15 - 12:40DUB-LTN
6h 25m1 stop
 Logo
13:00 - 14:15LTN-DUB
1h 15mdirect
Wed, 17 Sep - Wed, 24 Sep
Aer Lingus Logo
16:55 - 18:20SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€107Aer Lingus
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Wed, 1 Oct - Wed, 8 Oct
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€108Aer Lingus
Find Deal
Sun, 12 Oct - Tue, 21 Oct
KLM Logo
06:00 - 17:20ORK-LCY
11h 20m1 stop
KLM Logo
17:50 - 22:25LCY-ORK
4h 35m1 stop
€216KLM
Find Deal
Sun, 12 Oct - Sun, 19 Oct
KLM Logo
06:00 - 18:35ORK-LCY
12h 35m1 stop
KLM Logo
20:45 - 22:30LCY-ORK
25h 45m1 stop
€311KLM
Find Deal
Booking Insights

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 flight to London?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to London was found on the route from Dublin, at €49 return. The most popular connection is from Cork to London and KAYAK users have found return deals for as low as €61 in the last 3 days.

How much is a flight to London?

The average and cheapest price for all round-trip flights to London from each origin found by users searching on KAYAK in the last month.

A flight to London costs €347 on average. The cheapest price found on KAYAK in the last 2 weeks cost €55 and departed from Shannon. The most popular routes on KAYAK are Dublin to London which costs €319 on average, and Shannon to London, which costs €272 on average.

See prices from:

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 €62 on average for return flights. On the other hand, the most expensive months are August and December, where the average cost of tickets from Ireland is €113 and €107 respectively. For one-way flights, the best month to travel is May with an average price of €27.

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 Dublin €181 return, from Shannon €184 return, from Cork €225 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, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 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 €71.

Good to know – Book Cheap London Plane Tickets

Low seasonFebruary
Cheapest flight€25
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly (45% more expensive on average)
Flight from Dublin to London Luton Airport

When to book flights to London

Are your dates flexible? Find out the best times to travel to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to London based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking London flights

  • What is the cheapest flight to London?

    In the last 3 days, the cheapest flight deal to London was found on the route from Dublin, at €49 return. The most popular connection is from Cork to London and KAYAK users have found return deals for as low as €61 in the last 3 days.

  • Which London airport is closest to central London?

    The distance between London City and the city centre of London is 12 km, which makes it the closest of the 6 London airports airports. London Heathrow Airport is 23 km away from the centre, London Gatwick Airport is 38 km away, and London Luton Airport is 45 km away from the city centre London.

  • How much is a flight to London?

    On average, a flight to London costs €347. The cheapest price found on KAYAK in the last 2 weeks cost €55 and departed from Shannon Airport.

  • What is the cheapest day to fly to London?

    Based on KAYAK data, the cheapest day to fly to London is Friday where round-trip tickets can be as cheap as €443. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are €641 on average.

  • 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.

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

    The cheapest time of day to fly to London is generally at night, when round-trip flights cost €205 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 €877.

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

    Each week there are around 438 direct flights from within Ireland to London. The most common day for departures is Tuesday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to London

  • Looking for a cheap flight? 25% of our users found flights on this route for €113 or less one-way and €189 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London flight deals.

Prefer to fly direct to London?

 
Nonstop data is based off flight results for the next 60 days. Find direct flights from all airlines flying nonstop to London.
Find which airlines fly direct to London, which days they fly and book direct flights.

Direct departures

Ireland to London

Monday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Tuesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Wednesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Thursday

ANA, AccesRail, Aegean Airlines, +123 more

ANA, AccesRail, +124 more

Friday

ANA, AccesRail, Aegean Airlines, +126 more

ANA, AccesRail, +127 more

Saturday

ANA, AccesRail, Aegean Airlines, +121 more

ANA, AccesRail, +122 more

Sunday

ANA, AccesRail, Aegean Airlines, +130 more

ANA, AccesRail, +131 more

See more direct flights

Direct returns

London to Ireland

Monday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Tuesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Wednesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Thursday

ANA, AccesRail, Aegean Airlines, +123 more

ANA, AccesRail, +124 more

Friday

ANA, AccesRail, Aegean Airlines, +126 more

ANA, AccesRail, +127 more

Saturday

ANA, AccesRail, Aegean Airlines, +121 more

ANA, AccesRail, +122 more

Sunday

ANA, AccesRail, Aegean Airlines, +130 more

ANA, AccesRail, +131 more

See more direct flights

Reviews of the top 3 airlines flying 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.
7.1
Aer LingusOverall score based on 1228 reviews
6.9Entertainment
7.3Boarding
7.1Comfort
8.0Crew
6.5Food
Airline reviews

We had a long delay leaving IOM. No food or drunk service as it is a short flight. Shuttled by bus from terminal to plane with packed in conditions on bus.

6.0 GoodGail, Aug 2025DUB - IOM
Read more Aer Lingus reviews

We had a long delay leaving IOM. No food or drunk service as it is a short flight. Shuttled by bus from terminal to plane with packed in conditions on bus.

The space between seats was reduced even further. Could not even open the tray table fully and got compressed the moment the front guy reclined. For a long haul flight it was extremely uncomfortable.

Not satisfying due to loss Luguage for 4days. Damage Luguage that had no way to fill up a report for and me as a client to spend more money and time to replace it. Thank you for soliciting my opinion, but it was unfortunately a very disappointing experience. Stephanie Zvi

Delightful flight, ahead of time with a super crew, thanks

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

In business class overhead bins were minuscule. Had to use cabin staff to find a place for my carry-on bag. Boarding process was shambolic, as “passengers who needed assistance in boarding” absorbed an excessive amount of time and attention that Aer Lingus was apparently unprepared for.

Aer Lingus was fabulous.nhowever, Aiirfare Assist who Kayak routes me to to purchase tickets for m was awful. They messed up my reservation so bad that after about six hours on the phone with them over the week before departure, I had been choice but to show up at the airport. The Aer Lingus staff were amazing and got it sorted out but I would recommend not using Airfare Assist.

I had a great experience. I wasn’t sure what to expect but the crew helped me check my bags and made sure I got in the correct line to board. It was a bit of a walk to my gate so arrive early. I would recommend securing a flight that includes checking in your bag if you remotely think your baggage is over 10kg/22lbs. Be safe and upgrade unless you are carrying a backpack or weekend type baggage.

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

No entertained. food and beverages were not complimentary. they lost my checked luggage which made my 10 day vacation unpleasant.

Terrible service especially for premium economy. Much more comfortable seats on other providers

Friendly hosts/hostesses; dinner was of acceptable, but mediocre standard

Very caring crew on board. Didn’t have dinner as I was sleeping. Was seating in the emergency row so I had comfortable leg room

Had a nice little suite although I couldn’t close the door (but I didn’t ask anyone to help). 5K is a nice seat and very private (you look in on first class). Enjoyable flight and nice crew.

Crew was excellent. And no surprise that the seats aren’t comfortable at all. But that is every airline.

Although the crew were great and the good nice, I might as well have been on Ryanair for the amount of space I had. Not good enough BA. I’d rather pay more and not feel like a human sardine.

Love the A380 - loads of room. Headphone socket on my seat didn’t work. Sounds like a trivial issue? Well when flying long-haul the in-flight entertainment is what keeps you going so when it doesn’t work it’s a disaster. Pay attention to the details please BA. Spoiled what was otherwise an excellent flight with the usual brilliant crew.

Crew were fantastic can’t fault them at all. Couldn’t do enough for us

Crying baby the ENTIRE flight. Not your fault, but I paid 2700 for a premium economy ticket and it wasn't worth it. should have just stuck with coach. flight attendants very mediocre - minimal effort. Plane didn't seem very clean. Didn't have any cleansing wipes - most airlines give you this when you board. Flat screen scrolling didn't work. Toiletry case a joke - why bother at all?

I was told to be there to check in three hours before my flight and the counter only opened up two hours before. Apparently that is standard. So that was an hour I could have spent walking around Larnaca that was wasted. But besides that it was great

Gate is far at Leeds Bradford Airport. However, as the flight was less than half full, it was calm and not stressful. Great take off and landing. Friendly staff

Boarding was started early and we were lined up in. A glass tunnel on the tarmac we were left standing there for an hour with no information the flight left and arrived 30 mins late

It was great. We arrived a few minutes late but the crew were concert and kind about it. It was a nice smooth fly thanks be to Jesus. I prayed for smooth flight and Yahuwah answered my prayer.

Need more check in desks at Marrakech. Even if you are travelling with hand luggage only, you still need to 'check in' to get the old style boarding pass. Unfortunately they haven't thought to separate out the people checking in luggage to a separate desk. Flight was delayed leaving but arrived on time. Limited food options on board and very overpriced.

We bought tickets for £30 from kayak but we paid £55 for check in to rayan , they slaught us

Flight was delayed so long we missed our second flight. Entire trip had to be cancelled. Ryanair refused to help us.

Stanton airport is outdated, pure equiped, airport. Fire alarms, power outages is a common routine, wich result ir flights delay , additional money spending and huge gathering of people in airport wich is unsafe.

After you made us check-in I tried to add a suitcase in the internet and also to get help by chet. Nothing work and we pay 60 pounds at Airport. Comper to Easyjet to do the same, was easy and customer friendly.

Boarding was like being hoarded like cattle, all penned in in an area way to small

I missed the flight from Manchester to Dublin because of poor informations from Aer Lingus and the airport, no possibility to check in online, they don't respond to phone calls, I had to buy another tickets to enable me travel to Dublin from Manchester. I want my money to refund.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Stansted
Luton
Wembley
Gatwick
Milton Keynes
Richmond
Eastbourne
Croydon
Hounslow
Watford
Ilford
Guildford
Slough
Worthing
High Wycombe
Harrow
Maidstone
Maidenhead
Hayes
Chelmsford

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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