£18 Find Cheap Flights from Spain 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 18/3. 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
These are the airlines KAYAK users have selected most often from within our search results for flights to London
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Flight Deals

Cheap Flights from Spain to London

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

Thu, 16 Apr - Sat, 18 Apr
Vueling Logo
13:20 - 14:45
BCN
-
LGW
2h 25mdirect
Vueling Logo
13:00 - 16:15
LGW
-
BCN
2h 15mdirect
£38Vueling
Sat, 28 Feb - Tue, 3 Mar
easyJet Logo
10:20 - 11:50
BCN
-
LTN
2h 30mdirect
easyJet Logo
17:00 - 20:10
LTN
-
BCN
2h 10mdirect
£38easyJet
Sat, 25 Apr - Mon, 27 Apr
easyJet Logo
10:50 - 12:20
BCN
-
LTN
2h 30mdirect
easyJet Logo
12:55 - 16:10
LTN
-
BCN
2h 15mdirect
£38easyJet
Tue, 21 Apr - Sun, 26 Apr
Vueling Logo
11:25 - 12:50
BCN
-
LGW
2h 25mdirect
Vueling Logo
09:40 - 12:55
LGW
-
BCN
2h 15mdirect
£39Vueling
Sat, 14 Mar - Sun, 15 Mar
Ryanair Logo
22:40 - 00:10
MAD
-
STN
2h 30mdirect
Ryanair Logo
07:40 - 11:10
STN
-
MAD
2h 30mdirect
£41Ryanair
Fri, 13 Mar - Sun, 15 Mar
Ryanair Logo
22:35 - 00:05
MAD
-
STN
2h 30mdirect
Ryanair Logo
07:40 - 11:10
STN
-
MAD
2h 30mdirect
£43Ryanair
Wed, 15 Jul - Wed, 15 Jul
British Airways Logo
10:35 - 12:00
MAD
-
LHR
2h 25mdirect
British Airways Logo
16:30 - 20:05
LHR
-
MAD
2h 35mdirect
£65British Airways
Wed, 11 Mar - Thu, 12 Mar
British Airways Logo
18:05 - 19:25
MAD
-
LHR
2h 20mdirect
British Airways Logo
13:25 - 16:55
LHR
-
MAD
2h 30mdirect
£66British Airways
Tue, 31 Mar - Tue, 31 Mar
Iberia Logo
14:55 - 16:20
MAD
-
LHR
2h 25mdirect
Iberia Logo
18:45 - 22:10
LHR
-
MAD
2h 25mdirect
£71Iberia
Sat, 7 Mar - Fri, 13 Mar
Iberia Logo
07:40 - 09:15
MAD
-
LHR
2h 35mdirect
Iberia Logo
09:15 - 12:40
LHR
-
MAD
2h 25mdirect
£77Iberia
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.

The flight route Madrid to London was the most popular route on KAYAK over the last 3 days. A return flight could be found for £41. Also in the last 3 days, Barcelona was the most budget-friendly place to find a flight to London with one-way tickets at £18 and £38 return.

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.

On average, a flight to London costs £78. The cheapest price found on KAYAK in the last 2 weeks cost £9 and departed from Seville. The most popular routes on KAYAK are Barcelona to London which costs £75 on average, and Madrid to London, which costs £126 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 £52 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 Spain is £248 and £188 respectively. For return trips, the best month to travel is November with an average price of £46.

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 Bilbao £28 one-way - £79 return, from Arrecife £42 one-way - £70 return, from Reus Airport £45 one-way - £33 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 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 36 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 Stansted Airport, with an average flight price of £66.

Good to know - Cheap tickets from Spain to London

Low seasonJanuary
Cheapest flight£18
Best time to beat the crowds (23% less expensive on average)
Most popular time to fly (7% more expensive on average)
Flight from Barcelona-El Prat to London Luton Airport

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

Insights shared by verified travellers who flew the route from Spain to London 
JarrodFlew with British Airways
IBZ
-
LHR
Jul 2024
Give your self time with a connecting flight at LHR. You need to go through security again even with a connection.
JFlew with British Airways
ACE
-
LGW
May 2024
Travel in the week for hopefully a less busy flight.
Verified travelerFlew with British Airways
PMI
-
LHR
Apr 2024
Pack light for boarding and check out duty free at Palma de Mallorca airport
OmarFlew with British Airways
BCN
-
LHR
May 2024
Have own entertainment and battery to charge your phone
SimonFlew with British Airways
ACE
-
LGW
Jan 2024
Don’t fly into Gatwick as long waits for luggage plus always roadworks on m25 late at night.

FAQs - booking London flights

  • What is the cheapest flight to London?

    The flight route Madrid to London was the most popular route on KAYAK over the last 3 days. A return flight could be found for £41. Also in the last 3 days, Barcelona was the most budget-friendly place to find a flight to London with one-way tickets at £18 and £38 return.

  • Which London airport is closest to central London?

    8 miles away from London’s city centre, London City is the closest of the 6 major airports in the city. There are 14 miles separating London city centre to London Heathrow Airport, 24 miles to London Gatwick Airport, and 28 miles to London Luton Airport.

  • How much is a flight to London?

    On average, a flight to London costs £78. The cheapest price found on KAYAK in the last 2 weeks cost £9 and departed from Sevilla Airport.

  • What is the cheapest day to fly to London?

    Based on KAYAK data, the cheapest day to fly to London is Saturday where tickets can be as cheap as £84. On the other hand, the most expensive day to fly is Tuesday, where prices are £108 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 flights cost £57 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 £94.

Top tips for finding cheap flights to London

  • Looking for a cheap flight from Spain to London? 25% of our users found flights on this route for £51 or less one-way and £60 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 5 airlines flying from Spain 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 Spain 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
VuelingOverall score based on 1244 reviews
6.8Comfort
6.2Food
7.7Crew
5.9Entertainment
7.2Boarding
Airline reviews

All very smooth airside. Check-in counters were understaffed. The wait is too long. Only two, then three counters were open. Waiting time of 35 minutes is too long. Pls review your rota.

8.0 ExcellentDan, Jan 2026
SVQ - LGW
Read more Vueling reviews

All very smooth airside. Check-in counters were understaffed. The wait is too long. Only two, then three counters were open. Waiting time of 35 minutes is too long. Pls review your rota.

To complex. So many types of fare. This made the boarding a caos.

Needs faster boarding procedure. Not their fault but should still take into account indifferent flyers.

Very fast boarding. Crew members were super nice. I loved it!

My luggage got lost and until today there is no solution to the problem. It's still missing

I am writing to demand an immediate refund and compensation for the absolutely unacceptable experience I endured with VUELING this week. On Monday, my flight was canceled, and despite this, I have yet to receive any refund. I was then taken to a hotel in a terrible location, where no food or even water was provided. The next day, I was rebooked on another flight, for which I had to personally cover an additional €50 in transportation costs—only to have that flight canceled as well. After waiting 10 hours, only 10 of us were offered alternative accommodations, while the rest were left stranded. We were forced to remain in this situation until Thursday without a single explanation or proper assistance. During this entire ordeal, we were only provided with breakfast and dinner, while being charged extra for drinks. This level of treatment is completely unacceptable. I expect an immediate refund for the cancelled flights and full compensation for the inconvenience, additional expenses, and the significant distress caused.

Only food for sale. Did not even offer water. No entertainment

Checking was efficient and quick. Adequate luggage space. Food for purchase only at high prices

Nothing. There was no flight. They cancelled the flight with no replacement about 9 hours before takeoff.

The flight was canceled at the last minute. Alternative flight was booked after 6 hours wait in Malaga airport.

30 minutes still don't have gate number, ask many people can't get answer.

The boarding procedure got confusing because they wanted to weigh everyone’s carry-on. Apparently mine was 3 1/2 kg over their limit. I didn’t know they had a limit. And at the check-in desk, nothing was said about this. They wanted me to check the carry-on at no charge and that would have been fine except then they told me at my connection in London I would have to go outside to baggage claim retrieve my bag, and then recheck it. In other words, they could not check it to my final destination, only to London. I told him this was unacceptable so after a few minutes of discussion, they came back and said that my bag would be OK to carry on the plane. It seems that if you have a connection then the weight is not as important. Then when I actually went to board the boarding agent said I needed a tag indicating that my bag had been weighed, even though she had just five minutes ago talked to the same person who cleared me. Lots of confusion seems like a very bad process. They need to improve this.

My flight being automatically moved messed up my travel plans, and I had to quickly find an alternative mode of transportation. I couldn’t get a refund from any of the companies involved. Kayak, Ibiza, or Vueling. I am still unsure of how to settle my concern.

Boarding, crew, food and baggage handling excellent (no bags lost, yay!). However for an 8 hour flight, there were limited entertainment options. And really would have liked to have a pillow!

It wasn’t great because the third-party from Kayak there was just no information about how to check in with Vueling. And the purchase of the ticket from under pricer just made everything really difficult. I’m unlikely to use Kayak again for these reasons.

The crew was super friendly and helpful. The food was quite good. An overall positive experience.

It was fine, older plane with limited entertainment, otherwise fine.

the seats were bad and uncomfortable and the food was not tasty.

The crew was amazing. I appreciate the level of professionalism in the Iberia crew.

A more organized boarding experience and better food would have made the experience better.

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.

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 🥶

Nothing unexpected considering it is a Ryanair flight. It does the job. Nothing above, at all.

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

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

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.

The best budget airline in Europe. Flight was on time, crew friendly and worked hard during flight and were able to meet our needs. Only downside (not the airline's fault), there were no rear steps.

It was transportation nothing more. I will give a positive rating over Ryanair. We missed our Ryanair flight the night before and received rude and unconcerned treatment from the Ryanair customer service. It was late. We were very tired and stressed after doing our best to get to the airport. The so called customer service ladies were completely unconcerned from the start. Aside from that, the flight to London seemed to be their opportunity for advertising. No time to relax as attendants were constantly in the aisle selling. I will never fly Ryanair again!!

Boarding could be better. To get through your gate but to be stood in a corridor for 20 minutes is not great.

The plane was postponed for over 2.5 hours, which meant that all four of us missed the check in time for our ongoing trip to Melbourne. We had to buy new tickets for 4 people as we had to forfeit the ones we had. The cost was really unfair. i understand that it was snowing during the first leg of the plane for that morning. Surely the cost could have been shared by the airline and not all by us. I could have bought insurance - but you can see how much I travel. I will need to chose more trustworthy airlines.

The true is that travel from London to Faro on 11/12/2025 by BA was cancelled, so I did not go to Faro, so i did not board easy flight. The mediocre qualification to you was because even when i bought an insurance, i could not change date neither obtain reimbursement. It could be ideal if you do something in order for me not to lose the purchase Thank you

Queuing for quite a while despite using the "speedy boarding".

Would not advise EasyJet for a 5 hour flight…small plane and hence a lot of turbulence. No inflight entertainment so struggle to pass time in cramped seats. We also fell victim to extra charge for our cabin bags, although bag dimensions were ok, but the handle was rigid and slightly fell outside their testing cage!!….never again will we fly with this airline and be party to their scams for making money!

Liked. The check-in was pretty quick as they had 5 desks working.

Generally a good experience except for boarding in Naples on the flight back to London. We were all standing around for at least 20 minutes maybe longer as there was no seating.

Seats, WC,sizes for today's generation adults, and if technical problems arise a complimentary coffee, water nice for waiting one hours, the rest is perfect (pilot and cabin crew)

Delays on take off, delays at gate on landing, lugging lost to the ether. power on seats not working, couldn't work due to that and no WiFi. The crew was great and boarding was orderly if confused and rushed.

Mumbai airport is a nightmare! Especially going from domestic to international terminal (2). I almost missed my flight. Then i could not check in because I purchased on kayak to British airways and my first flight was an indigo (non partner). So they called me when I was at the security outside the terminal and told me I had a middle seat, not what I paid for! After talking to the desk agent, they could not help but it finally worked out. A bit stressful for no reason. Probably never buy from kayak again this type pf complicated tickets (multi cities).

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

Easy, straightforward boarding process. Flight attendant was lovely and attentive, food was delicious - especially dinner, I had the roasted chicken in a mushroom sauce with potatoes - and entertainment selection was top notch. I would fly with BA again.

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

Crew was good. Seat was worn but overall okay. The infotainment system is outdated and needs to be updated. BA should provide free WiFi for club world/business class passengers.

I really liked it when the First Officer mentioned that we could see Paris out of the window on the left.

Pilot announcements were clear. Boarding is too slow compared to budget carriers.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
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Eastbourne
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Luton
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Croydon
Stansted
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Chichester
Maidstone
Chelmsford
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Crawley
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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.