£20 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 28/4. 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
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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

Tue, 21 Apr - Sat, 25 Apr
Vueling Logo
07:30 - 09:10
BCN
-
LHR
2h 40mdirect
Vueling Logo
20:50 - 00:10
LHR
-
BCN
2h 20mdirect
£42Vueling
Sat, 18 Apr - Mon, 20 Apr
Vueling Logo
18:35 - 20:05
BCN
-
LHR
2h 30mdirect
Vueling Logo
20:50 - 00:10
LHR
-
BCN
2h 20mdirect
£50Vueling
Wed, 29 Apr - Wed, 6 May
Vueling Logo
07:30 - 09:10
BCN
-
LHR
2h 40mdirect
Vueling Logo
09:55 - 13:15
LHR
-
BCN
2h 20mdirect
£51Vueling
Fri, 3 Apr - Wed, 8 Apr
Vueling Logo
07:30 - 09:10
BCN
-
LHR
2h 40mdirect
Vueling Logo
20:50 - 00:10
LHR
-
BCN
2h 20mdirect
£55Vueling
Thu, 2 Jul - Sat, 4 Jul
British Airways Logo
10:30 - 11:55
MAD
-
LHR
2h 25mdirect
British Airways Logo
12:20 - 15:50
LHR
-
MAD
2h 30mdirect
£71British Airways
Fri, 26 Jun - Wed, 1 Jul
British Airways Logo
18:25 - 19:45
MAD
-
LHR
2h 20mdirect
British Airways Logo
06:15 - 09:40
LHR
-
MAD
2h 25mdirect
£72British Airways
Sat, 12 Sep - Mon, 21 Sep
Iberia Logo
17:45 - 19:10
MAD
-
LHR
2h 25mdirect
Iberia Logo
20:00 - 23:25
LHR
-
MAD
2h 25mdirect
£82Iberia
Wed, 15 Apr - Wed, 22 Apr
Multiple Airlines Logo
09:40 - 14:45
VLC
-
LHR
6h 05m
1 stop
Multiple Airlines Logo
09:55 - 20:05
LHR
-
VLC
9h 10m
1 stop
£128Multiple Airlines
Sat, 2 May - Sat, 9 May
Multiple Airlines Logo
09:55 - 20:05
SDR
-
LHR
11h 10m
1 stop
Multiple Airlines Logo
20:50 - 19:20
LHR
-
SDR
21h 30m
2 stops
£149Multiple Airlines
Wed, 29 Apr - Wed, 6 May
Iberia Logo
09:55 - 17:15
GRX
-
LHR
8h 20m
1 stop
Iberia Logo
06:15 - 09:25
LHR
-
GRX
26h 10m
1 stop
£174Iberia
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.

In the last 3 days, the cheapest flight deal to London Heathrow Airport was found on the route from Barcelona, at £42 return. The most popular connection is from Manchester to London Heathrow Airport and KAYAK users have found return deals for as low as £82 in the last 3 days.

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.

A flight to London Heathrow Airport costs £130 on average. The cheapest price found on KAYAK in the last 2 weeks cost £21 and departed from Bilbao. The most popular routes on KAYAK are Barcelona to London Heathrow Airport which costs £102 on average, and Madrid to London Heathrow Airport, which costs £142 on average.

See prices from:

What is the cheapest day to fly to London?

The average price of all round-trip flights to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to London is Saturday where round-trip tickets can be as cheap as £141. On the other hand, the most expensive day to fly is Monday, where round-trip prices are £243 on average.

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 February, where tickets cost £101 on average for return flights. On the other hand, the most expensive months are July and May, where the average cost of tickets from Spain is £273 and £252 respectively. For one-way flights, the best month to travel is February with an average price of £101.

What is the cheapest time of day to fly to London Heathrow Airport?

The average price for all round-trip flights to London Heathrow Airport 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 Heathrow Airport is generally at night, when round-trip flights cost £71 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 £278.

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 Barcelona-El Prat Airport £78 return, from Madrid £96 return, from Valencia £195 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 5 weeks before departure, which saves you about 50% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

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

Low seasonJanuary
Cheapest flight£20
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly (10% more expensive on average)
Flight from Barcelona-El Prat 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?

    In the last 3 days, the cheapest flight deal to London Heathrow Airport was found on the route from Barcelona, at £42 return. The most popular connection is from Manchester to London Heathrow Airport and KAYAK users have found return deals for as low as £82 in the last 3 days.

  • 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 £130. The cheapest price found on KAYAK in the last 2 weeks cost £21 and departed from Bilbao Airport.

  • 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.

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 £100, from Málaga £136, from Madrid £282
  • 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 1252 reviews
6.8Comfort
6.2Food
5.9Entertainment
7.2Boarding
7.7Crew
Airline reviews

Basic service for the basic price. Efficient and cost effective, so ticked all the right boxes.

10.0 ExcellentGeoff, Mar 2026
CDG - SVQ
Read more Vueling reviews

Basic service for the basic price. Efficient and cost effective, so ticked all the right boxes.

Not constantly changing the price DURING a booking. Felt like bait and switch.

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

Stewardess was not attentive at all asked for a bottle of water never came by 15 minutes later I asked her she said that she forgot there was only 12 people in first class and two stewardess unacceptable I ordered the fish was the last person to order. They said that they did not have any had to have a different item pasta at the inside of it because I was diabetic. Worst experience I ever had will never travel this airline again.

It’s got the tightest seats of any airline - my knees were smashed for 3 hours - absolutely awful.

Flight was fine - however my husband's checked in case was damaged, and mine still has not arrived

Very nice staff, terrible food, not very comfortable premium economy.

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.

WiFi wasn’t available to economy until the end of the flight.

Boarding crew were extremely rude. At check in, I showed a medical note from a surgeon stating that I had a medical problem that caused me to end up in an emergency room. The surgeon requested that I get an upgrade so I can travel back home comfortably since I was in a lot of pain. I was alone with my daughters (9 and 14). They made a huge deal about giving me seats although there were so many empty seats in business. Finally, I paid a hefty price for it and the seats were exactly the same as in economy cabins but not as good because there was a forced tray in the middle seat that I couldnt even lift so I can lay down.

Very good staff members with sincere passion and responsibility in their job.

We were unable to check in on line with no explanation! Despite arriving at the airport 3 hours before deprture, my wife and I had no allocated seats and ended up being seated seperately. This is unacceptable! We were both ib the middle of the centre of the aircraft, despite having previously requested an aisle and seat next to it when booking and having been an Exec Club member for 25 years - so much for loyalty! The seats were extremely uncomfortable for such a long flight. I fly a lot and these were, by far, the most uncomfortable seats I've had in many years. It was all fine until we arrived at LHR where we got off the plane quickly, but then had to wait more than 45 minutes in the baggage hall for our bags to arrive, despite the fact that some luggage was already off when we got to the carousel. After 14 1/2 hours flying, this is completely unacceptable and ruined the experience for us.

Very please with the seating that the Kayak staff booked for us!

I liked the movie selection and the speed getting the luggage. I did not like the fact that for premium they did not have a personal kit with toothpaste, I travel all the time in premium economy and bussiness and althought the kit might bot be the same at least you have the smalles kit in premium economy. I did not like either that because i was in the last row of premium economy nothing made it to my seat. They run out of the food I wanted ( it is a surprise because there were only 6-7 rows. They would run out of orange jouice were thy were passing water/orange juice around, they run out of some alcohol. I am undertand running out of it but I don’t understand why mot getting kore. The service I received in row 11 was different from the service in rows 7,8…. Also the screen on my tv was broken. It did not respond to touch. So, in conclusion, if I compare my flight going to Europe with an American airline plane in premium and the one with British, British expereince was significantly much worse. This company is declining fast.

The crew on the flight were not particularly pleasant and fluid restriction was an issue. I was not allowed to fill my water bottle. Crew didn't check on passengers other than meal service.

BA is a fine airline. The problem lies with XCOVER INSURANCE, that KAYAK uses. Very poor service from insurance. No telephone number to contact XCOVER. Their replies are inadequate & overall very bad insurance. I wish kayak uses standard insurance company., such as AIG.

British Airways offers amenities subpar with all other airlines flying internationally. Sharing tis based on my experience with flying at least five other airline between IAD-DEL in the last six months.

Worth every penny to upgrade to BC. Treated and felt more like First Class

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Everything you need to know for your flight to Heathrow

Information on the airport you'll fly into in London