£25 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 10/2. 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
£58
Typical prices: £89-£210
Vueling
Tue 13/1Thu 15/1
BIO - LHR • Direct
Cheapest one-way flight
£25
Typical prices: £53-£106
British Airways
Tue 10/2
MAD - 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 • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
MAD-LHR
Cheapest
BCN-LHR
Most popular
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 51% 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

Tue, 13 Jan - Thu, 15 Jan
Vueling Logo
13:50 - 14:45
BIO
-
LHR
1h 55mdirect
Vueling Logo
15:30 - 18:35
LHR
-
BIO
2h 05mdirect
£58Vueling
Thu, 15 Jan - Sat, 17 Jan
Vueling Logo
13:50 - 14:45
BIO
-
LHR
1h 55mdirect
Vueling Logo
15:30 - 18:35
LHR
-
BIO
2h 05mdirect
£59Vueling
Fri, 23 Jan - Tue, 27 Jan
British Airways Logo
12:00 - 13:30
MAD
-
LHR
2h 30mdirect
British Airways Logo
08:25 - 11:55
LHR
-
MAD
2h 30mdirect
£73British Airways
Tue, 13 Jan - Sat, 17 Jan
British Airways Logo
12:50 - 14:20
MAD
-
LHR
2h 30mdirect
British Airways Logo
08:25 - 11:55
LHR
-
MAD
2h 30mdirect
£73British Airways
Thu, 22 Jan - Mon, 26 Jan
Iberia Logo
07:40 - 09:15
MAD
-
LHR
2h 35mdirect
Iberia Logo
15:45 - 19:10
LHR
-
MAD
2h 25mdirect
£76Iberia
Thu, 25 Dec - Wed, 31 Dec
Iberia Logo
06:45 - 08:25
MAD
-
LHR
2h 40mdirect
Iberia Logo
18:45 - 22:10
LHR
-
MAD
2h 25mdirect
£79Iberia
Mon, 12 Jan - Sat, 17 Jan
Multiple Airlines Logo
12:50 - 18:00
PMI
-
LHR
6h 10m1 stop
Multiple Airlines Logo
15:30 - 22:40
LHR
-
PMI
6h 10m1 stop
£120Multiple Airlines
Wed, 28 Jan - Wed, 4 Feb
Lufthansa Logo
18:20 - 22:55
VLC
-
LHR
5h 35m1 stop
Lufthansa Logo
11:10 - 17:35
LHR
-
VLC
5h 25m1 stop
£125Lufthansa
Wed, 31 Dec - Sun, 4 Jan
Lufthansa Logo
12:00 - 21:00
ALC
-
LHR
10h 00m1 stop
Lufthansa Logo
11:10 - 17:35
LHR
-
ALC
5h 25m1 stop
£129Lufthansa
Wed, 14 Jan - Fri, 16 Jan
Multiple Airlines Logo
21:10 - 08:25
LCG
-
LHR
12h 15m1 stop
Multiple Airlines Logo
19:05 - 07:50
LHR
-
LCG
11h 45m1 stop
£143Multiple 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 Barcelona to London Heathrow Airport was the most popular route on KAYAK over the last 3 days. A return flight could be found for £67. Also in the last 3 days, Madrid was the most budget-friendly place to find a flight to London Heathrow Airport with one-way tickets at £25 and £58 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 £122. The cheapest price found on KAYAK in the last 2 weeks cost £20 and departed from Santiago de Compostela. The most popular routes on KAYAK are Barcelona to London Heathrow Airport which costs £170 on average, and Madrid to London Heathrow Airport, which costs £175 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 £86 on average for one-way flights. On the other hand, the most expensive months are July and April, where the average cost of tickets from Spain is £272 and £248 respectively. For return trips, the best month to travel is November with an average price of £86.

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 Seville £39 one-way - £51 return, from Madrid £42 one-way - £94 return, from Barcelona-El Prat Airport £63 one-way - £118 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 seasonJune
Cheapest flight£25
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly (13% more expensive on average)
Flight from Madrid 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 Barcelona to London Heathrow Airport was the most popular route on KAYAK over the last 3 days. A return flight could be found for £67. Also in the last 3 days, Madrid was the most budget-friendly place to find a flight to London Heathrow Airport with one-way tickets at £25 and £58 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 £122. The cheapest price found on KAYAK in the last 2 weeks cost £20 and departed from Santiago de Compostela Airport.

  • What is the cheapest day to fly to London?

    Based on KAYAK data, the cheapest day to fly to London is Wednesday where tickets can be as cheap as £129. On the other hand, the most expensive day to fly is Tuesday, where prices are £205 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 evening, which is peak travel time and where the average cost of a ticket is £488.

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 £35, from Málaga £69, from Madrid £225
  • 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.
7.1
VuelingOverall score based on 1219 reviews
6.8Comfort
7.7Crew
7.1Boarding
6.2Food
5.9Entertainment
Airline reviews

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

6.0 GoodMarcos, Nov 2025
ORY - BCN
Read more Vueling reviews

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.

Boarding with some sense and communication. It was a total free-for-all everyone coming all at once, no organisation of row numbers or priority.

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.

Flight cancelled, lost a day of travel where we were trying to meet friends we couldn't meet. Iberia website is very difficult to navigate and has lots of dead links. If you do not speak Spanish it is even harder. Tried communicating on their WhatsApp and that was also close to impossible. We were told we'd be compensated 150EU's for this cancelled flight but there is no avenue towards rectifying this issue. I've had to take it up with my credit card to contest the charges and not pay for a flight that didn't happen but doubt I will ever be reimbursed for my two Ubers to the airport where we never even departed or the 150EU's we were told we would receive. I would never fly Iberia again. Clown show.

I've taken British Airways before and it has been great. On this trip to Spain and Portugal we had two BA flights. On both flights we were taken by bus from the terminal out to the plane on the tarmac. There were many older folks on these flights, and to ask people in their 70s to lug their carry-on and personal items up the long mobile staircase to the plane entrance, is very disturbing. I won't be taking British Airways in the future. Many people on these flights were very unhappy.

Great : The crew was awesome ♥️ To improve : - The rice in the "Rice with chicken" was rather s kind of rice pudding, not good at all - No power outlet to charge your phone. 😒

why can't planes be boarded from back to front?? everything was great otherwise

The food on the flight was of marginal quality. Small bits of chicken, instant mashed potatoes and some carrots. The rolls were very dry, nearly inedible. The seats were quite small and didn’t allow for any shifting of position during the flight. There was limited leg room.0

We flew into Barcelona and the plane was so cramped and very uncomfortable and dirty. But we flew out of Madrid and that plane was much better. Would fly Iberia again.

For what we are willing to pay for international air travel, our experience was very good. We had no problem checking in, we had very little wait time at the AA counter in Madrid, and the staff in Madrid were very helpful. The flight crew was helpful and courteous, the plane was on the newer side, and our assigned seats were together without us needing to purchase them. The flight took off on time and arrived early. Overall, it was a pleasant experience or as much as could be expected in economy for almost 10 hours.

Big queues on arrival at airport despite having already checked in and only needed to drop bags off. Flight delayed which impacted on connecting flight.

The update about flights and the terminal changes information was great.

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

The flight was excellent in World Travellor plus. Well worth the extra money. Boarding at Phoenix was the usual poorly organized event. Very stressful.

Although business class, the seating was really cramped. The food was so so.

Not only were the aircrafts spacious, but the crew was friendly and efficient. I was so gracious for the included meals on the longer flight (8+ hours).

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

The check-in baggage belt was broken (which is understandable) but what was surprising is they would check you in, give a baggage tag and then you have to drag the baggage to a different counter at the end of airport. No vegetarian option in in-flight meal. British Airways remains the worst big name airlines and always my last option while booking.

Decrepit planes, poor business class layout designed to maximize revenue, no decent movie selection.

Entertainment did not work from DC to London. Was not able to check in online during my return journey from Mumbai to London. Food was good!

Travelling to a place near Heathrow?

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Everything you need to know for your flight to Heathrow

Information on the airport you'll fly into in London