€15 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 5/5. 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
1 adult, Economy, 0 bags

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
Travellers love KAYAK
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Everything you should know

Cheapest return fare
€32
Typical prices: €64-€57
Ryanair
Wed 29/4Wed 6/5
SNN - STN • Direct
Cheapest one-way flight
€15
Typical prices: €18-€25
Ryanair
Tue 5/5
ORK - STN • Direct
Top airlines
Most flights • 236 per week
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
Cheapest
Most popular
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 6 weeks in advance save around 36% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 29% price drop
Most popular
Good to know
Good to know
+1
+1
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+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to London!
Flight Deals
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, 29 Apr - Wed, 6 May
Ryanair Logo
20:50 - 22:20
SNN
-
STN
1h 30mdirect
Ryanair Logo
18:55 - 20:25
STN
-
SNN
1h 30mdirect
€32Ryanair
Tue, 21 Apr - Tue, 21 Apr
Ryanair Logo
08:15 - 09:40
ORK
-
STN
1h 25mdirect
Ryanair Logo
19:35 - 21:00
STN
-
ORK
1h 25mdirect
€33Ryanair
Wed, 29 Apr - Wed, 6 May
Ryanair Logo
20:50 - 22:20
SNN
-
STN
1h 30mdirect
Ryanair Logo
18:55 - 20:25
STN
-
SNN
1h 30mdirect
€33Ryanair
Thu, 23 Apr - Mon, 27 Apr
Ryanair Logo
14:15 - 15:40
ORK
-
STN
1h 25mdirect
Ryanair Logo
06:25 - 07:50
STN
-
ORK
1h 25mdirect
€34Ryanair
Fri, 5 Jun - Mon, 8 Jun
British Airways Logo
20:10 - 21:25
DUB
-
LHR
1h 15mdirect
British Airways Logo
06:20 - 07:45
LHR
-
DUB
1h 25mdirect
€87British Airways
Sat, 9 May - Tue, 12 May
British Airways Logo
20:15 - 21:30
DUB
-
LHR
1h 15mdirect
British Airways Logo
08:15 - 09:40
LHR
-
DUB
1h 25mdirect
€91British Airways
Sat, 9 May - Fri, 15 May
British Airways Logo
20:15 - 21:30
DUB
-
LHR
1h 15mdirect
British Airways Logo
06:20 - 07:45
LHR
-
DUB
1h 25mdirect
€93British Airways
Mon, 18 May - Mon, 25 May
Aer Lingus Logo
20:30 - 21:45
ORK
-
LHR
1h 15mdirect
Aer Lingus Logo
22:25 - 23:50
LHR
-
ORK
1h 25mdirect
€105Aer Lingus
Tue, 19 May - Tue, 26 May
Aer Lingus Logo
20:30 - 21:45
ORK
-
LHR
1h 15mdirect
Aer Lingus Logo
22:25 - 23:50
LHR
-
ORK
1h 25mdirect
€106Aer Lingus
Thu, 23 Apr - Wed, 29 Apr
Aer Lingus Logo
21:15 - 22:40
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
14:40 - 16:10
LHR
-
SNN
1h 30mdirect
€107Aer Lingus
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 Cork, at €32 return. The most popular connection is from Dublin to London and KAYAK users have found return deals for as low as €42 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 €243 on average. The cheapest price found on KAYAK in the last 2 weeks cost €15 and departed from Shannon. The most popular routes on KAYAK are Cork to London which costs €383 on average, and Dublin to London, which costs €271 on average.

See prices from:

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 €452. On the other hand, the most expensive day to fly is Wednesday, where round-trip prices are €627 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 €69 on average for return flights. On the other hand, the most expensive months are April and July, where the average cost of tickets from Ireland is €126 and €117 respectively. For one-way flights, the best month to travel is May with an average price of €39.

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 €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 €749.

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 €101 return, from Dublin €197 return, from Shannon €198 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 6 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 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 Luton Airport (LTN), with an average flight price of €98.

Good to know – Book Cheap London Plane Tickets

Low seasonJanuary
Cheapest flight€15
Best time to beat the crowds (33% less expensive on average)
Most popular time to fly (10% more expensive on average)
Flight from Cork to London Stansted 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 Cork, at €32 return. The most popular connection is from Dublin to London and KAYAK users have found return deals for as low as €42 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 €243. The cheapest price found on KAYAK in the last 2 weeks cost €15 and departed from Shannon 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.

Top tips for finding cheap flights to London

  • Looking for a cheap flight? 25% of our users found flights on this route for €133 or less one-way and €206 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London flight deals.

Reviews of the 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 1499 reviews
7.0Entertainment
7.2Comfort
7.4Boarding
8.1Crew
6.6Food
Airline reviews

Checked in ok for 3 flights at the airport check-in desk, but apparently I was not checked in to my connecting flights even though I was assured that I was and had seats on all 3 flights. Aer Lingus departure was also delayed for 1.5 hours which gave no time to collect bags to go through customs.

4.0 OkayWendy, Apr 2026
DUB - YYZ
Read more Aer Lingus reviews

Checked in ok for 3 flights at the airport check-in desk, but apparently I was not checked in to my connecting flights even though I was assured that I was and had seats on all 3 flights. Aer Lingus departure was also delayed for 1.5 hours which gave no time to collect bags to go through customs.

No complimentary drinks or snacks offered on a 2 hour flight was disappointing but everything else went well

There was a 6h delay with limited updates . When we got to Manchester the bus took ages to get to arrivals and we missed our train, dinner reservation. Basically lost a whole day due to arrivals Lingus!!

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

I love the direct flights. It saves a lot of hassle and allows immigration and customs in Ireland, making arrival much easier.

Great. Has a problem with DOB. Fixed 4 us. Led to a 5 hour earlier flight to London!

One of the best flight experiences I've have had in along time. Would fly with them again.

So, the trip from Dublin to LA did not really happen because the flight took off before we could finish the transfer.

Very nice experience. Flight had good entertainment system and good food options. Customer service was very friendly and nice as well.

Like - the crew were nice Dislike - sitting on the tarmac for long periods after boarding and landing.

Food and entertainment were not available, so my rating on those items isn't actually correct. There should be a "Not relevant" or "Didn't use it" option.

Delay in boarding with no explanation why. Stood for about 40 mins waiting to board

Rubbish moved my seat don’t know why same seat configuration cost me extra so me and my wife could sit together now I know why no paper ticket so they can do this

Slow and delayed boarding, including standing outside 15m in -3 temperatures, Late take-off approx 45 mins Very slow bag delivery approx 45 min - no explanation

The flight boarded nice and early and this meant there was no sudden rush at the gate. The only down side was the cabin was very cold 🥶

Flying from Newquay was an absolute dream! Would 100% recommend flights from there!

It would have been better if I was not ill so I didn't go and I didn't come back and I could not transfer my tickets to a later date as Ryanair stop flying from Manchester at the end of October till next year

From boarding to disembarking, the whole operation was very efficient.

Passengers next to me insisted I change seats so they could sit together. I had to frequently move so that when the sear belt sign was on I was in my proper seat! I was returning from helping my mum with my dad's things after his sudden death and didn't feel like arguing with the other passengers.

Flying from Hamburg to Stansted was a nightmare if I have to be honest, the flight was due to leave at 15:50 and we ended up not taking off properly till 16:56. They really don’t have enough people doing the sorting of baggage where you get the sticker for your case before the security check, going through security was 10x more faster then the whole baggage situation.

Was upgraded to business class on this flight, I presume due to my premium economy class for my London to Denver flight. Business class was the same seats as economy, only the middle seat was unfilled. Decent lunch served, and the lounge experience in Prague was good. The only heads up I would give is give yourself enough time for gate carry-on luggage scanning, which I did not anticipate in my time planning.

Overall good, bigger chairs in the future would be nice.

I loved the food choices and the attentiveness of the crew but boarding was chaotic.

Great flight, last one out the air-conditioning was far to hot and the return it was to cold and then issued blankets. On the outward bowned the headset connector didn't work properly. You had intermittent sound from the audio socket.

My experience with British Airways was fine and dandy. Nothing truly negative to report. However, I was. asked to check my carryon bag all the way through to my desitination which prompted some huge problems. Thank goodness I kept a foldable-personal-item-bag in my carryon. I was asked to remove my valuable electronic belongings from my personal item bag, which was a camera bag full of expensive lenses and camera equipment, into another bag for the flight because it was "too big". Farbeit from me for asking further questions, but the bag was let through when I departed to Paris from America with no problems at all as I was able to explain that it was slightly oversized due to being a camera bag with a layer of protective foam which made it slightly larger. Still, this bag could and did fit perfectly under my airplain seat during my departure from America. On the flight back though, this was not the case and I was asked to remove highly valuable personal items, stow my camera bag in my checked bag, and then had to pay and overweight fee. Kinda bogus, but I was tired and wanted to get home so I complied. Regardless, it would have been nice to have had my bag retrieved during the London to Pittsburgh flight so I could put on new clothes and freshen up before take off.

The staff was extremely friendly and nice. Overall, the flight was pleasant, and the food was good. They asked me to check in my smaller cabin luggage suitcase in Mumbai as the flight was full. Fortunately, I had packed a spare set of clothes in my laptop bag so I was okay.

Flight was delayed by over two hours and that meant my connecting flight was in jeopardy but there was no acknowledgement or help from the BA staff

The gate agent made me check my carry-on in Denver, even though I've traveled all over taking this case on the plane. Beware folks. Food in Premium Economy was quite good - excellent blanket! Flight attendants on the Heathrow-to-Budapest flight on 3-27-2026 were quite snappy. I got a frown when asked to unscrew the water bottle cap for me (I had a cast on my right arm). Also woke up right when they were handing out biscuits. She had given my rowmates one and was in the process of giving water when I asked for a biscuit. She scolded me and said, "You snooze, you lose". She did give me one, but I thought that comment was uncalled for.

Business class on British Air with the Airbus 320 means the same seating as main cabin ( 3 - 3), but with the middle seat of each three-seat row blocked off to become a platform/table. This is decidedly NOT a business class experience. Other aspects of the flight were fine.

I Keep your expectations to low to middling with BA, or most European/ US airlines these days.

Very late to leave, poor communication on expected departure time and when boarding actually started.

Everything was perfectly fine, it’s exactly what you would hope for from a budget airline. You get what it says on the tin, what more could you ask for?

Cheap flight but I didn't like the almost one hour delay because of paperwork!!!!

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.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Stansted
Luton
Wembley
Gatwick
Hounslow
Milton Keynes
Croydon
Ilford
Watford
Richmond
Hayes
Guildford
Slough
Eastbourne
Southend-on-Sea
Maidenhead
Worthing
Ipswich
Maidstone
Bedford

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.