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Find cheap flights to London from €40

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 25/5. 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
0 bags
Fri 24/5
Fri 31/5

Search 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
In the last 7 days, travellers have searched 44,979,812 times on KAYAK, and here's why:

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Cheap flight deals to London

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 and deals for you by selecting your travel dates.
Choose your dates
09:25 - 10:55DUB-LHR
1h 30mdirect
18:05 - 19:30LHR-DUB
1h 25mdirect
€69British Airways
Find Deal
Wed, 11 Sep - Tue, 17 Sep
19:55 - 21:15DUB-LHR
1h 20mdirect
06:50 - 08:15LHR-DUB
1h 25mdirect
€70British Airways
Find Deal
Sat, 7 Sep - Mon, 9 Sep
23:55 - 01:10DUB-LTN
1h 15mdirect
09:00 - 10:20LTN-DUB
1h 20mdirect
€70Ryanair
Find Deal
Sat, 4 May - Mon, 6 May
07:00 - 08:50DUB-LGW
1h 50mdirect
20:15 - 07:30LGW-DUB
11h 15m1 stop
Wed, 29 May - Wed, 5 Jun
07:00 - 08:50DUB-LGW
1h 50mdirect
16:55 - 21:25LGW-DUB
4h 30m1 stop
Tue, 28 May - Tue, 4 Jun
19:15 - 20:40DUB-LGW
1h 25mdirect
08:40 - 10:05LGW-DUB
1h 25mdirect
€99Ryanair
Find Deal
Sat, 4 May - Mon, 6 May
20:15 - 21:35DUB-LHR
1h 20mdirect
06:45 - 08:05LHR-DUB
1h 20mdirect
€109Aer Lingus
Find Deal
Sat, 4 May - Mon, 6 May
07:20 - 08:40ORK-LHR
1h 20mdirect
22:25 - 23:45LHR-ORK
1h 20mdirect
€110Aer Lingus
Find Deal
Wed, 29 May - Sat, 1 Jun
14:10 - 07:05DUB-LGW
16h 55m1 stop
18:10 - 07:30LGW-DUB
13h 20m1 stop
€146Vueling
Find Deal
Tue, 4 Jun - Wed, 5 Jun
19:30 - 09:35DUB-LHR
14h 05m1 stop
20:50 - 07:40LHR-DUB
10h 50m1 stop
€199Vueling
Find Deal
Tue, 14 May - Fri, 17 May

Flights to London - Travel Insights & Trends

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 prices found by users searching on KAYAK in the last 72 hours.
If travelling to London, the cheapest city to fly from in the last 3 days was Dublin, with flights as low as €37 one-way and €65 return. Flights from Cork are the most searched and start at $198 for a return trip.

How much is a flight to London?

The average and cheapest price for all flights to London from each origin found by users searching on KAYAK in the last month.
On average, a flight to London costs €159. The cheapest price found on KAYAK in the last 2 weeks cost €16 and departed from Dublin. The most popular routes on KAYAK are Dublin to London which costs €231 on average, and Cork to London, which costs €197 on average.
See prices from:

What is the cheapest day to fly to London?

The average price of all 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 Tuesday where tickets can be as cheap as €96. On the other hand, the most expensive day to fly is Friday, where prices are €125 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 September, where tickets cost €48 on average for one-way flights. On the other hand, the most expensive months are August and July, where the average cost of tickets from Ireland is €96 and €72 respectively. For return trips, 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 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 flights cost €92 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 €103.

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 €49 one-way - €135 return, from Shannon €100 one-way - €177 return, from Cork €103 one-way - €84 return.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights to London, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 60 days 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 City Airport, with an average flight price of €85.

Which airlines fly to London?

Ryanair, Aer Lingus, and British Airways usually have the most frequent connections from Ireland to London. See the amount of flights per week for popular airlines flying to London.

Which airline offers the most flights to London?

Of the 5 airlines that fly to London, British Airways offers the most flights, with around 472 per week, followed by easyJet with 324 flights per week.

How many airports are there in London?

There are 6 airports in London: London Heathrow Airport (LHR), London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY) and London Southend Airport (SEN). The busiest airport is London Heathrow Airport (LHR), with 50% of all flights arriving there.

How long is the flight to London?

The duration of your flight to London depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to London on KAYAK are from Cork, which takes 1h 15m, Shannon, which takes 1h 15m, Dublin, which takes 1h 20m, and Knock, which takes 1h 25m.

How many direct flights to London are there each day?

There are around 67 direct flights from within Ireland to London every day. Most flights depart in the morning, with 07:00 the most common departure time and 49% of flights departing in the morning.

How many direct flights to London are there each week?

Each week there are around 467 direct flights from within Ireland to London. The most common day for departures is Wednesday, with 15% of flights taking off on this day.

How many long-haul flights are there to London each week?

There are not any long-haul (6-12 hour flight duration) or medium-haul (3-6 hour flight duration) flights to London. Instead, there are 455 short-haul flights (up to 3 hour flight duration), with the most arriving from Dublin.

How many cities have direct flights to London?

From Ireland, there are direct flights to London from 5 cities. The city with the most direct flights is Dublin, with 313 direct flights each week.

Good to know

Low season

January

High season

August

Cheapest flight

€40
Best time to beat the crowds (38% less expensive on average)
Most popular time to fly (44% more expensive on average)
Flight from Dublin to London Heathrow 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?

    If travelling to London, the cheapest city to fly from in the last 3 days was Dublin, with flights as low as €37 one-way and €65 return. Flights from Cork are the most searched and start at $198 for a return trip.

  • 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 €159. The cheapest price found on KAYAK in the last 2 weeks cost €16 and departed from Dublin 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.

See more FAQs

Top tips for finding cheap flights to London

  • 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?

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, +121 more

ANA, AccesRail, +122 more

Tuesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Wednesday

ANA, AccesRail, Aegean Airlines, +123 more

ANA, AccesRail, +124 more

Thursday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Friday

ANA, AccesRail, Aegean Airlines, +125 more

ANA, AccesRail, +126 more

Saturday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Sunday

ANA, AccesRail, Aegean Airlines, +124 more

ANA, AccesRail, +125 more

See more direct flights

Direct returns

London to Ireland

Monday

ANA, AccesRail, Aegean Airlines, +121 more

ANA, AccesRail, +122 more

Tuesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Wednesday

ANA, AccesRail, Aegean Airlines, +123 more

ANA, AccesRail, +124 more

Thursday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Friday

ANA, AccesRail, Aegean Airlines, +125 more

ANA, AccesRail, +126 more

Saturday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Sunday

ANA, AccesRail, Aegean Airlines, +124 more

ANA, AccesRail, +125 more

See more direct flights
See more direct flights

Top 4 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.
7.2
Aer LingusOverall score based on 1349 reviews
7.3boarding
7.0entertainment
6.6food
8.0crew
7.1comfort
Airline reviews

Short flight so not much to rate. Surprised I had to pay for a soda.

8.0 ExcellentAnonymous, Apr 2024DUB - LHR
Read more about Aer Lingus reviews

Short flight so not much to rate. Surprised I had to pay for a soda.

the room on the plane was good but that is because flight not sold the other three seat and I had room. the food in terrible.

First the price I paid was excellent, my flight was full, but my seat was roomy. The one downside to the experience was they had games on the entertainment console. The guy behind me poked at my head about half the flight. I hope they get rid of this feature.

Very good need to offer better choice of food for business

They should. Heck planes more often not when they are suppose to be leaving causing delays

Crew was fantastic got lovely food and plenty of water. Entertainment was good. Never had to ask for anything. Left on time and got to Seattle early. Luggage did not take long either.

Always find Aer Lingus reliable and good value for money. Food on this flight was pretty basic and the headphone Jack at my seat only worked for one ear. Little disappointed in movie selection, limited on recent releases. Staff are okay - but I always buy a cheap ticket so not like I expect first class opulence anyway!!!

Boarding was so quick, flight was ahead of time which is great and the pilot spoke clearly and was letting people know everything, amazing, love travelling with you 😊

Great hospitality and service! Seats could always be cushioned better.

As four hour wait with no explanation as to why the delay Very unacceptable

Perfect timing, perfect departure, lovely crew on the ground and in the air.

Good flight. Take off a little late but make up the time

Everything’s went straight forward, no issues, good service and friendly crew

Left on time and arrived on time both ways, thank you

The flight was 45 mins delayed but the crew provided water and necessities like tissues

Cheap flights as you expect with Ryanair. I would take cheaper flights over entertainment and comfort for short haul travel. Main issue is usually delays at airports. In this case we landed roughly 2hr30 later than planned due to earlier delays with the plane. Not the worst I imagine

We each paid for 10kg checked in luggage. Flying out there were no issues sharing one case (20kg). Not so coming back. Additional £48 charge and unable to provide an explanation of why it was ok on one journey but not the other, or indeed what material difference it makes between 2x10kg cases vs 1x20kg case. Scam, and appalling from Ryanair.

Easy process and good flight experience The food good be better

I didn't like. The seats and the floor were very dirty and it is not the first time

Unfortunately didn't realise how far away Frankfurt Hahn airport is from Frankfurt the city. Outbound flight was delayed by 2.5 hours and no communication at airport, just a whisper emknating through the packed crowd ready to board at the gate as someone read out an email they had received. All rather poor and pathetic

The first class flight itself was first class, however getting to the airport and getting through the airport was agony. The BA flight sat on the taxiway for ages and caused us to miss our connecting flight which meant half a day lost. Our return flight on BA was cancelled so a dawn flight was made and we lost another half day. Goodby BA

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

There was some delay at Heathrow where a machine needed to "start the engines" wasn't available and they couldn't even find the team tasked to do it. Unacceptable. Caused about an hour delay and seemed unnecessary. Also saw several passengers abusing the overhead luggage situation, having too many large bags and not leaving enough space for others. The crew was good and the refreshments were good in quality and quantity.

They cancelled our ticket, gave us no warning, they reissued it 4 days prior to trip and it was cancelled again when we got to the airport- very stressful, the flight was overbooked so they drove us across Milan to malpensa

Great little city hopper plane. Unfussy and roomy. Nice little snack provided too

I've done hundreds of flights in my life, and this flight was one of the best I've ever taken, From beginning to end, everything went smoothly, professionally, and with a smile and friendly attitude from all employees I interacted with. The food was delicious (and free), as were the drinks. There was just a genial and effective way in the way that British Airways organized the flight -that reminded of days in the 70's, 80's, and 90's, when flying was a fun, and exciting adventure. I enjoyed and had confidence in the abilities of the flight crew, I'll be flying British Airways several more times this summer. Thank you so much for the great experience! Cheryl Olso

Some how I got “offloaded” even though I had my boarding pass Food was horrible Staff were nice and cheerful No headphones were provided

Terrible! I missed my flight to my final destination and British airlines and American Airlines keep pointing fingers on each other’s. Nobody wants to take responsibility

Overall, terrific service, accommodations, and experience. Only reason comfort was rated lower was because it was difficult to keep a comfortable sleeping position for the overnight flight, but I also had an economy seat.

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.

Rude check in staff. Split family up with young children.

I were there 20min before departure and they didn’t let me on the board with 5 other people, after all they admitted it was their(Ryanair) fault.

Book Cheap London Plane Tickets

Recent return flight deals

 
These are the cheapest return flights to London found on KAYAK in the last 72 hours.
11/9Wed
directBritish Airways
1h 30mDUB-LHR
17/9Tue
directBritish Airways
1h 25mLHR-DUB
€69
7/9Sat
directBritish Airways
1h 20mDUB-LHR
9/9Mon
directBritish Airways
1h 25mLHR-DUB
€70
4/5Sat
directRyanair
1h 15mDUB-LTN
6/5Mon
directRyanair
1h 20mLTN-DUB
€70
29/5Wed
direct
1h 50mDUB-LGW
5/6Wed
1 stop
11h 15mLGW-DUB
€83
28/5Tue
direct
1h 50mDUB-LGW
4/6Tue
1 stop
4h 30mLGW-DUB
€96
4/5Sat
directRyanair
1h 25mDUB-LGW
6/5Mon
directRyanair
1h 25mLGW-DUB
€99
4/5Sat
directAer Lingus
1h 20mDUB-LHR
6/5Mon
directAer Lingus
1h 20mLHR-DUB
€109
29/5Wed
directAer Lingus
1h 20mORK-LHR
1/6Sat
directAer Lingus
1h 20mLHR-ORK
€110
4/6Tue
1 stopVueling
16h 55mDUB-LGW
5/6Wed
1 stopVueling
13h 20mLGW-DUB
€146
14/5Tue
1 stopVueling
14h 05mDUB-LHR
17/5Fri
1 stopVueling
10h 50mLHR-DUB
€199

Search by stops

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to London found on KAYAK in the last 72 hours.
25/5Sat
directBritish Airways
1h 20mDUB-LHR
€40
25/5Sat
directBritish Airways
1h 20mDUB-LHR
€41
31/5Fri
directRyanair
1h 15mDUB-LTN
€43
28/5Tue
directRyanair
1h 20mDUB-STN
€44
22/5Wed
1 stopNorwegian
7h 25mDUB-LGW
€49
14/5Tue
1 stopVueling
13h 25mDUB-LGW
€50
2/5Thu
directAer Lingus
1h 15mSNN-LHR
€52
14/5Tue
1 stopVueling
14h 05mDUB-LHR
€52
11/5Sat
directAer Lingus
1h 15mORK-LHR
€53
1/5Wed
1 stopNorwegian
5h 55mDUB-LGW
€58

Search by stops

Search by airline

Search by price

Recent domestic flight deals

4/6Tue
directeasyJet
1h 35mEDI-LGW
5/6Wed
directeasyJet
1h 30mLGW-EDI
€63
8/6Sat
directRyanair
1h 20mEDI-STN
22/6Sat
directRyanair
1h 20mSTN-EDI
€63
31/5Fri
directeasyJet
1h 15mEDI-LTN
1/6Sat
directeasyJet
1h 20mLTN-EDI
€63
8/5Wed
directeasyJet
1h 30mBFS-LGW
15/5Wed
directeasyJet
1h 30mLGW-BFS
€63
17/9Tue
directBritish Airways
1h 25mGLA-LHR
18/9Wed
directBritish Airways
1h 25mLHR-GLA
€81
16/9Mon
directBritish Airways
1h 25mGLA-LHR
18/9Wed
directBritish Airways
1h 25mLHR-GLA
€85
24/5Fri
direct
1h 25mBFS-LGW
26/5Sun
multi-stop
2h 50mLGW-BFS
€225
21/5Tue
multi-stopKLM
4h 00mGLA-LHR
28/5Tue
multi-stopKLM
3h 55mLHR-GLA
€232
3/6Mon
multi-stopKLM
7h 20mGLA-LHR
8/6Sat
multi-stopKLM
4h 35mLHR-GLA
€233
16/5Thu
multi-stopNorwegian
11h 35mEDI-LGW
19/5Sun
multi-stopNorwegian
4h 30mLGW-EDI
€254

Search by stops

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Search by price

Last minute flights to London

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to London that are departing in the next 10 days.
27/4Sat
directRyanair
1h 25mDUB-LGW
29/4Mon
directRyanair
1h 25mLGW-DUB
€71
27/4Sat
directRyanair
1h 25mDUB-LGW
29/4Mon
directRyanair
1h 25mLGW-DUB
€81
27/4Sat
directBritish Airways
1h 30mDUB-LHR
27/4Sat
directBritish Airways
1h 25mLHR-DUB
€99
29/4Mon
directBritish Airways
1h 20mDUB-LHR
4/5Sat
directBritish Airways
1h 25mLHR-DUB
€108
25/4Thu
direct
1h 20mDUB-STN
29/4Mon
multi-stop
15h 55mSTN-DUB
€109
27/4Sat
direct
1h 20mDUB-STN
29/4Mon
multi-stop
13h 05mSTN-DUB
€114
25/4Thu
directAer Lingus
1h 15mSNN-LHR
29/4Mon
directAer Lingus
1h 25mLHR-SNN
€125
27/4Sat
directAer Lingus
1h 20mDUB-LHR
1/5Wed
directAer Lingus
1h 20mLHR-DUB
€127
29/4Mon
multi-stopNorwegian
20h 00mDUB-LGW
30/4Tue
multi-stopNorwegian
13h 10mLGW-DUB
€172
28/4Sun
multi-stopNorwegian
11h 35mDUB-LGW
30/4Tue
multi-stopNorwegian
11h 30mLGW-DUB
€211

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Search by price

Flights to London

Return flight deals:

London - Ireland

Cabin classes:

€3,324
€361
€1,081
€29