SCL - LHR

$438 Find Cheap Flights from Santiago to London

1 adult
1 adult, Economy

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 in flight searches from Santiago to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Santiago to London, as well as popular online travel agencies
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Booking Insights

KAYAK's insights & trends for Santiago to London flights

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

How much is a round-trip flight from Santiago to London Heathrow Airport?

What’s the cheapest day of the week to fly from Santiago to London?

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

Your flight ticket price will generally be cheaper if you fly to London on a Wednesday and more expensive on a Saturday. On your return trip to Santiago, you should consider flying back on a Wednesday, and avoid Thursdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Santiago 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 from Santiago to London Heathrow Airport is March, where tickets cost $933 (return) on average. On the other hand, the most expensive months are January and April, where the average cost of round-trip tickets is $1,295 and $1,249 respectively.

Can I save money by flying with a layover from Santiago to London Heathrow Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $2,472 on average.

How far in advance should I book a flight from Santiago 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 from Santiago 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 on the flight from Santiago to London Heathrow Airport, you should book around 6 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$438
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly with an average 5% increase in price.
Flight from Santiago to London

When to book flights from Santiago to London

Are your dates flexible? Find out the best times to travel from Santiago to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Santiago to London flights

  • What is the cheapest flight from Santiago to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Santiago to London Heathrow Airport was $438 for a one-way ticket and $829 for a round-trip.

  • Do I need a passport to fly between Santiago and London?

    Yes

  • Which airports will I be using when flying from Santiago to London?

    Santiago and London are both served by 1 main airport. You will leave Santiago from Santiago Arturo Merino Benitez and will be arriving at London Heathrow.

  • Which airlines offer Wi-Fi service onboard planes from Santiago to London?

    Iberia, and Vueling offer inflight Wi-Fi service on the Santiago to London flight route.

  • Which aircraft models fly most regularly from Santiago to London?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the Santiago to London flight route.

  • Which airline alliances offer flights from Santiago to London?

    oneworld is the only airline alliance operating flights between Santiago and London.

  • On which days can I fly direct from Santiago to London?

    You can catch a nonstop flight from Santiago to London on Tuesday, Friday, and Sunday.

  • Which is the best airline for flights from Santiago to London, LATAM Airlines or British Airways?

    The two airlines most popular with KAYAK users for flights from Santiago to London are LATAM Airlines and British Airways. With an average price for the route of $1,498 and an overall rating of 7.5, LATAM Airlines is the most popular choice. British Airways is also a great choice for the route, with an average price of $1,431 and an overall rating of 6.6.

  • How does KAYAK find such low prices on flights from Santiago 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 from Santiago to London.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Santiago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Santiago 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 to Santiago with another airline. Booking your flights between Santiago and LHR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Santiago 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 from Santiago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Santiago to London Heathrow Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $609 or less one-way and $1,382 or less round-trip.

Prefer to fly direct from Santiago to London?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Santiago Arturo Merino Benitez to London Heathrow.
Find which airlines fly direct from Santiago Arturo Merino Benitez Airport to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

Santiago Arturo Merino Benitez to London Heathrow

Tuesday

British Airways, Finnair, Iberia

British Airways, Finnair, +1 more

Thursday

British Airways, Finnair, Iberia

British Airways, Finnair, +1 more

Friday

British Airways, Finnair, Iberia

British Airways, Finnair, +1 more

Sunday

British Airways, Finnair, Iberia

British Airways, Finnair, +1 more

See more direct flights

Direct returns

London Heathrow to Santiago Arturo Merino Benitez

Monday

British Airways, Finnair, Iberia

British Airways, Finnair, +1 more

Wednesday

British Airways, Finnair, Iberia

British Airways, Finnair, +1 more

Thursday

British Airways, Finnair, Iberia

British Airways, Finnair, +1 more

Saturday

British Airways, Finnair, Iberia

British Airways, Finnair, +1 more

See more direct flights

Reviews of the top 3 airlines serving from Santiago to London

 
See real verified KAYAK customer reviews for airlines flying from Santiago to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Santiago 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.
7.5
LATAM AirlinesOverall score based on 1840 reviews
7.6Boarding
6.7Food
8.0Crew
7.0Entertainment
7.4Comfort
Airline reviews

Boarding was confusing with a delayed flight because there was no English translation

6.0 GoodAnonymous, Aug 2025GRU - CNF
Read more LATAM Airlines reviews

Boarding was confusing with a delayed flight because there was no English translation

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

Horrible the worst airlines I have ever flown. Cancelled flight with no choices and when contacted them they were not helpful

Because the flight was late, we lost the connection to Brazil. You, Delta delayed, and you Delta anticipated the door closing in 15 min from Miami to GRU. Why? It caused a lot of stress! I almost could not see my mother in law alive because of your delay.

My entertainment did not work. I was very tired from the botched connection, and the poor sleep

Lost ,y connection due to a mechanical delay, huge line to get new connection and vouchers

It’s a delta flight operated by LATAM. The whole ticket sale is a mess, delta changed my flight but didn’t update it in LATAM system, I couldn’t get my boarding pass, it took me hours to resolve this issue with delta. I had to change my travel plan. No apology from Delta even though it’s their fault.

Wider seats, better seat cushions, (I felt like there was a board I was sitting on). I had the chicken to eat but It neither tasted nor looked like chicken. The fruit was good.

It was a very good flight, no entertainment is the reason for not checking that box.

I travel often with LATAM, it never disappoints me. The service is great, nice crew, latest and some classic movies. I got 3 small meals, cannot complaint. I’ll definitely travel again with them.

I don't understand the concept of paying to get your personal luggage onboard and then asked to check it in.... either sell the space or don't, its a hassle to carry those all through the airport just to make a check in at the last minute.

The food was great and the service and attitude was amazing!!

It was a great experience. The only thing I would have changed was that the bathrooms were never cleaned and they got very dirty.

Wasted a lot of time trying to find the CDG lounge - it was not next to the connecting flight gate like the Air France staff said.

My experience was good overall, the quality of the food really decreased! There used to be a choice between meat and fish now it’s between chicken and pasta! In the choices of entertainment meditation has been added which is very good. Soft chair workout to improve blood circulation and avoid phlebitis should be added.

The only reason the overall rating wasn't "excellent" was due to problems in claiming luggage. The bags are delivered to the main area (Cinta 35) for domestic passengers, but to a DIFFERENT ROOM for international arrivees. After waiting 30 minutes, someone (who didn't appear to be from Air France or the airport) told us to go to another area. There we found our bags, which appeared to have been awaiting us for a while. We had to go through a bag check before leaving the airport. If we had been alerted to this possibility, or better yet, been to go directly to Cinta 34, we could have eliminated quite a bit of waiting.

Much better than the major US Carriers especially in Biz Class.

I wish that the meal included a vegetable or even a salad instead of couscous! Why serve chicken with rice AND couscous? Service was good overall though a bit lacking in friendliness. Usually on air france I've been offered a glass of champagne before dinner, wine with dinner, and a digestif after dinner. We were only offered wine this time!

It was not Air France but Air Europa. But confusion over our checked luggage. Whether it was checked all the way to Tenerife or not. It was not. Had to line up again in Departures. At least our Sky Priority was honoured. Flight was fine.

My wife and I had a row to ourselves after moving seats. There were no TVs and you had to buy food. So we did nothing but had a quick nap. Flight was fine.

Although the crew were great and the good nice, I might as well have been on Ryanair for the amount of space I had. Not good enough BA. I’d rather pay more and not feel like a human sardine.

Love the A380 - loads of room. Headphone socket on my seat didn’t work. Sounds like a trivial issue? Well when flying long-haul the in-flight entertainment is what keeps you going so when it doesn’t work it’s a disaster. Pay attention to the details please BA. Spoiled what was otherwise an excellent flight with the usual brilliant crew.

Crew were fantastic can’t fault them at all. Couldn’t do enough for us

Crying baby the ENTIRE flight. Not your fault, but I paid 2700 for a premium economy ticket and it wasn't worth it. should have just stuck with coach. flight attendants very mediocre - minimal effort. Plane didn't seem very clean. Didn't have any cleansing wipes - most airlines give you this when you board. Flat screen scrolling didn't work. Toiletry case a joke - why bother at all?

I was told to be there to check in three hours before my flight and the counter only opened up two hours before. Apparently that is standard. So that was an hour I could have spent walking around Larnaca that was wasted. But besides that it was great

horrible! after going through hell and back to get a flight home after my flights got cancelled I also had a delay of 2hrs stuck inside the plane because of some technological problem.

I enjoyed the comfort of Premium Economy. The Purser on London-Nairobi was a little testy, snappish in his tone. I understand stressed, tired, etc but his tone in addressing passengers I found wanting.

Outdated from start to finish. Good was inedible, choice was very poor. They don’t seem to care

Very good crew. The seating in economy plus was excellent, and I slept most of the way. The diabetic meal that I requested was almost tasteless--about a 2 on a ten-point scale.--so I ate little. And why bother serving dinner to fliers at midnight?! I had eaten a meal at the airport six hours earlier. A good breakfast would be better.

British Airways Flight 525 from Florence to London on July 29th 2025 was the worse flight I have ever been on. The flight was excessively delayed with poor communication from airline as to the reason for delay. We were notified of need for an unscheduled stop in Pisa after boarding due to weather which was limiting ability to fuel up to the capacity needed for the flight to London. Though we understand and appreciate the safety concern, on quick web search we later learned this was a recurrent problem. We were subsequently kicked off our connecting flight out of London to Port land, Oregon (also on British Airways) though that flight was also delayed (we were told we would not be able to make it in time, but ironically the amount of time it took for them to rebook us would have been more than sufficient to make the connection). We then had to stay overnight in London at a very mediocre hotel, had to take a flight out on a different carrier which involved a stop at LAX (not a direct flight to our home city which we had paid extra for the convenience). Half of our bags did not arrive in LA and we had to transfer the bags ourselves from the international terminal to terminal 6, only to have most of this luggage that made it from London to LAX not arrive in Portland. They bags were eventually found but took over 60 hours for delivery. The entire trip home which was suppose to be 13 hours took over 40.

Everything you need to know for your flight from Santiago to London

Information on your arrival and departure airports

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