£15 Find Cheap Flights from Spain to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 11/3. 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 Heathrow Airport

 
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
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£50
Overall average: £67
Vueling
Thu 5/3Wed 11/3
BIO - LHR • Direct
Cheapest one-way flight
£15
Typical prices: £18-£20
Vueling
Wed 11/3
SCQ - LHR • Direct
Our travellers' advice
AI-powered summary based on content written by KAYAK users. AI can make mistakes.
Pack light for boarding on British Airways flights.
Bring entertainment and a charger for the flight.
User tips
User tips
User tips
User tips
Top airlines
British Airways
Most flights • 126 per week
Vueling
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
SCQ
-
LHR
Cheapest
MAD
-
LHR
Most popular
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 52% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+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 Heathrow!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Spain to Heathrow

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

Thu, 5 Mar - Wed, 11 Mar
Vueling Logo
13:50 - 14:45
BIO
-
LHR
1h 55mdirect
Vueling Logo
15:30 - 18:35
LHR
-
BIO
2h 05mdirect
£50Vueling
Wed, 11 Mar - Sat, 14 Mar
Vueling Logo
13:50 - 14:45
BIO
-
LHR
1h 55mdirect
Vueling Logo
15:30 - 18:35
LHR
-
BIO
2h 05mdirect
£56Vueling
Wed, 4 Mar - Wed, 11 Mar
Vueling Logo
13:50 - 14:45
BIO
-
LHR
1h 55mdirect
Vueling Logo
15:30 - 18:35
LHR
-
BIO
2h 05mdirect
£59Vueling
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
£65British 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
£70Iberia
Tue, 17 Mar - Fri, 20 Mar
Iberia Logo
13:20 - 14:55
MAD
-
LHR
2h 35mdirect
Iberia Logo
19:40 - 23:05
LHR
-
MAD
2h 25mdirect
£75Iberia
Mon, 16 Mar - Wed, 18 Mar
Brussels Airlines Logo
17:30 - 21:20
MAD
-
LHR
4h 50m
1 stop
Brussels Airlines Logo
11:05 - 16:40
LHR
-
MAD
4h 35m
1 stop
£84Brussels Airlines
Tue, 31 Mar - Wed, 8 Apr
Multiple Airlines Logo
00:45 - 21:10
SVQ
-
LHR
21h 25m
1 stop
Multiple Airlines Logo
15:10 - 19:00
LHR
-
SVQ
2h 50mdirect
£118Multiple Airlines
Mon, 16 Mar - Mon, 23 Mar
Multiple Airlines Logo
20:15 - 14:45
ALC
-
LHR
19h 30m
1 stop
Multiple Airlines Logo
09:55 - 16:45
LHR
-
ALC
5h 50m
1 stop
£120Multiple Airlines
Booking Insights

KAYAK's insights & trends for flights to Heathrow

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

What is the cheapest flight to London Heathrow Airport?

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

The flight route Madrid to London Heathrow Airport was the most popular route on KAYAK over the last 3 days. A return flight could be found for £65. Also in the last 3 days, Santiago de Compostela was the most budget-friendly place to find a flight to London Heathrow Airport with one-way tickets at £15 and £50 return.

How much is a flight to London Heathrow Airport?

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

On average, a flight to London Heathrow Airport costs £113. The cheapest price found on KAYAK in the last 2 weeks cost £17 and departed from Bilbao. The most popular routes on KAYAK are Barcelona to London Heathrow Airport which costs £150 on average, and Madrid to London Heathrow Airport, which costs £142 on average.

See prices from:

What is the cheapest month to fly to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to London Heathrow Airport, 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 Heathrow Airport is November, where tickets cost £87 on average for one-way flights. On the other hand, the most expensive months are July and May, where the average cost of tickets from Spain is £267 and £241 respectively. For return trips, the best month to travel is November with an average price of £87.

What is a good deal for flights to London Heathrow Airport?

If you’re looking for cheap airfare to London Heathrow Airport, 25% of our users found tickets to London Heathrow Airport for the following prices or less: From Madrid £45 one-way - £95 return, from Barcelona-El Prat Airport £53 one-way - £76 return, from Valencia £81 one-way - £220 return.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to London Heathrow Airport, 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 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 36 days before departure.

Good to know - Cheap tickets from Spain to London Heathrow Airport

Low seasonJanuary
Cheapest flight£15
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (12% more expensive on average)
Flight from Santiago de Compostela to London Heathrow Airport

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

Insights shared by verified travellers who flew the route from Spain to Heathrow 
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.
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

FAQs - booking London Heathrow Airport flights

  • What is the cheapest flight to London Heathrow Airport?

    The flight route Madrid to London Heathrow Airport was the most popular route on KAYAK over the last 3 days. A return flight could be found for £65. Also in the last 3 days, Santiago de Compostela was the most budget-friendly place to find a flight to London Heathrow Airport with one-way tickets at £15 and £50 return.

  • How far is London Heathrow Airport from central London?

    The distance between London Heathrow Airport and the city centre of London is 14 miles.

  • How much is a flight to London?

    On average, a flight to London costs £113. The cheapest price found on KAYAK in the last 2 weeks cost £17 and departed from Bilbao 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 £131. On the other hand, the most expensive day to fly is Monday, where prices are £226 on average.

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

    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 Heathrow Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport 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 Heathrow Airport?

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

    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 Heathrow Airport 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 Heathrow Airport?

    The cheapest time of day to fly to London Heathrow Airport is generally at night, when flights cost £67 on average. The most expensive time of day to fly to London Heathrow Airport is generally in the morning, which is peak travel time and where the average cost of a ticket is £215.

Top tips for finding cheap flights to London Heathrow Airport

  • Looking for cheap airfare to London Heathrow Airport? 25% of our users found round-trip tickets to London Heathrow Airport for the following prices or less: Cheap flights to London Heathrow Airport from Bilbao £21, from Málaga £239, from Madrid £266
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London Heathrow Airport flight deals.

Reviews of the top 3 airlines flying from Spain to Heathrow

 
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 Heathrow? 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
7.2Boarding
6.8Comfort
7.7Crew
5.9Entertainment
6.2Food
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.

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.

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

This review if for American Airlines. From London to LA, British Airways customers flew American Airlines and there was a small incident on the plane with a customer that was sitting next to me. She had a gluten free meal which she selected online. The flight attendant brought her food and both times, it contained gluten (bread, cracker) and by the second time, the customer mentioned about the issue to the flight attendant because she is highly allergic to gluten. Customer was very gentle and just wanted to note that both her meals contained gluten on the tray. The whole situation could have ended really well if flight attendant just apologized and mentioned she would relay the message to the responsible party. Instead, she entered defensive mode and started making some BS excuse about how the cracker that was supposed to be mine, fell onto her tray instead. Mind me, I already had that cracker on my tray. I doubt I would be given two. Also, she mentioned that the bread from the previous meal was gluten free. REALLY? I ate that bread and it tasted like it had PLENTY of gluten. The whole situation was handled so poorly, not only by that one flight attendant, but by 2 others. The reason I intervened is because the customer sitting next to me was tearing and all she did was mention the mistake which could have cause her health great damage, and instead she received attacks and excuses. AA, you should train your employees how to better handle situations like this. A 'well, I don't see why this problem is a big deal since you (the customer with allergies) read the ingredients and avoided eating the cracker that "accidentally fell" from the tray of the customer sitting next to you,' should not have been coming out of a flight attendant's mouth.

Continue to be disappointed that the “food” for “ordinary” fare paying passengers is poor - on this flight it consisted of a packet of two biscuits and a small bottle of water … not even offered a “free” cup of tea or coffee. Suggest a review of the “menu” and offer a hot drink to ordinary (economy class) passengers. On this route there are many far cheaper flights available - paying almost £200 for a flight that could have been bought for less than half this price should have some “perks” - offering hot drinks to all passengers would, in my opinion, be a cost effective measure which would improve the image of British Airways.

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Everything you need to know for your flight to Heathrow

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