£102 Find Cheap Flights from South America to the United Kingdom

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Good to know - Cheap tickets from South America to the United Kingdom

Low season

March

High season

July

Cheapest flight

£102
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (11% more expensive on average)
Flight from Buenos Aires to London Heathrow Airport

FAQs for booking flights from South America to the United Kingdom

  • How does KAYAK find such low prices on flights from South America to the United Kingdom?

    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 South America to the United Kingdom.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from South America to the United Kingdom?

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

  • What is the Hacker Fare option on flights from South America to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from South America to the United Kingdom 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 from South America to the United Kingdom?

    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 from South America to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in the United Kingdom?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in the United Kingdom is London Heathrow Airport (LHR), with an average flight price of £536.

  • What is the cheapest day to fly to the United Kingdom?

    Based on KAYAK data, the cheapest day to fly to the United Kingdom is Monday when return tickets can be as cheap as £843. On the other hand, the most expensive day to fly is Tuesday, when return prices are £1,053 on average.

  • What is the cheapest time of day to fly to the United Kingdom?

    The cheapest time of day to fly to the United Kingdom is generally in the morning, when round-trip flights cost £898 on average. Morning departures are around 14% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally at night, which is peak travel time and where the average cost of a ticket is £1,176.

  • What is the cheapest flight to the United Kingdom?

    The cheapest ticket to the United Kingdom from South America found in the last 72 hours was to London Heathrow Airport, at £645 return. The most popular route is Bogotá (BOG) to London Heathrow Airport (LHR) and the cheapest return airline ticket found on this route in the last 72 hours was £645.

  • What is the cheapest month to fly from South America to the United Kingdom?

    The cheapest month for flights from South America to the United Kingdom is February, when tickets cost £612 (return) on average. On the other hand, the most expensive months are April and March, when the average cost of round-trip tickets is £928 and £871 respectively.

  • How far in advance should I book a flight from South America to the United Kingdom?

    To get a below-average price on the flight from South America to the United Kingdom, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

  • How long is the flight to the United Kingdom?

    An average direct flight from South America to the United Kingdom takes 15h 58m, covering a distance of 6015 miles. The shortest route is Bogotá (BOG) to London Heathrow Airport (LHR) with an average flight time of 10h 10m.

  • What are the most popular destinations in the United Kingdom?

    Based on KAYAK flight searches, the most popular destination is London (98% of total searches to the United Kingdom). The next most popular destinations are Manchester (1%) and Edinburgh (1%).

Top 5 airlines serving from South America to the United Kingdom

Need help choosing which airline to fly with from South America to the United Kingdom? 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 1767 reviews
6.7Food
7.6Boarding
7.4Comfort
8.1Crew
7.0Entertainment
Airline reviews

Not sure why there are so many security checks at this airport. Consistently annoying showing passport over and over, checking carryons at gate all the while trying to make tight connection. Basically it was uncomfortable crowded cabin with meidiocre service

4.0 OkayRalph, Apr 2025LIM - JFK
Read more LATAM Airlines reviews

Not sure why there are so many security checks at this airport. Consistently annoying showing passport over and over, checking carryons at gate all the while trying to make tight connection. Basically it was uncomfortable crowded cabin with meidiocre service

Change of gate in Santiago devolved into half plus hour delay and a really tight connection in Lima

Although the flight is goof and the crew is good, the way the airline charges you for every service is ridiculous.

I liked everything, this was classed as premium economy but it was much better than Lufthansas business class. Lovely staff, comfortable plane and an excellent seat arrangement. A very pleasant surprise.

Everything was good except the check in. Could not do it online neither on the machines in the airport. Needed special assistance from the airline desk clerk

No entertainment but not expected. Unless you are referring to monitor that you can use. Then Al, was fine on all flights.

Friendly staff, It was the first flight out for our plane, so had to be deiced from the frost. Only delayed a few minutes,

We boarded so late it caused us to miss time at Foz. No real information was provided to the passengers waiting.

Basic experience, we were delayed causing less time to enjoy our destination and on the way back, we boarded when the flight should have been taking off.

reliable, relatively relaxed, helpful and kind staff and clean airplanes. No need for more.

Flight was packed. This was a very uncomfortable experience. Boarding process could be explained better. Despite recommending a window seat when travelling with a pet in the cabin, the seat in front of me had less space than the center and aisle seats. For Premium Economy, the seats were crammed with minimal legroom. I hate to think what Regular Economy was like. The cabin crew missed me at first when handing out meals. When my meal eventually came, there were no utensils. I'd originally booked to fly Business Class; those seats didn't look that great either.

Boarding went fast. Lisbon's gates are too small for the flights they serve.

Baggage check in was very slow. No sign that the check in was TAP until the station opened. Understaffed and overworked team.

Our flight was canceled for a reason that suggests gross mismanagement. We were re-booked for a flight to a different airport.

The flight schedules are better than some airlines. Their website is terrible, it doesn’t store any information so every time you fly you have to re-enter the data. The flight was late taking off but we still got to our destination on time.

Great overall experience with TAP - would not hesitate to recommend for your next trip to or from Portugal

Correct meal and overall flight went well. 204€ for an extra luggage is simply exaggerated

Boarding the plane from 2 entries at the the same time front and back was ridiculous. I boarded from the back for row 7 and others boarded from the front for row 15, for example. We met mid-plane and had to squeeze past each other. Ridiculous

Cancelled flight TP225 from LIS to MIA till next day

Flight delays. Mad rush with no help from staff. Staff for TAP is elusive like the Tasmanian devil... you hear about it but never seen it. Seats were the only thing that was ok as its lie flat, but trying to sleep was like being at a concert as the crew were chit chatting non stop while you are trying to sleep. Food was seriously better in Premium EY on other airlines like Singapore Airlines, Lufthansa, United. We traveled Business Class on TAP. Crew were friendly enough but not very present at lull period of flight.

They didn't even give us water, everything was sold

They should at least offer water like other airlines, which seems like a humanitarian gesture to me

They gave me an upgrade but charged me for my bag. I felt abused because this had never happened to me before with an upgrade with another airline.

Well. It is a no frills airline. Annoying is that even for the long-haul everything has to be paid for separately. Once you add up the extras the flight is getting to expensive. Then one might as well fly with a legacy carrier which provides far better comfort. Changing flight at MAD airport is a nightmare. The worst airport in the world. Poor signposting, poor passport control, poor security check and long queues. I had 2h transfer time and spend in queues almost 1.5h

All flights with Air Europa you arrive late to the connections of other flights, I missed my train, I had to pay for my train again, the crew are antisocial, you are paying for a service, it is not free, thanks to the travelers they are there, it is the last time I fly with them,

Terrible experience - we won’t be flying with Air Europa again

The crew was not kind , just doing their job but very cold people

The insanely long lines at customs were chaotic and stressful. They also created a lot of stress among passengers. Including fights and threats. The hot food I purchased was cold, barely edible. The check in staff and crew were nice and the pilot good but the overall experience was very disappointing. Passengers were still insulting each other upon arrival.

No frills airlines. Tickets were reasonably priced for a short-term booking. But comfort is a big issue.

It was just okay. They overcharged me for a checked bag because I didn’t know it wasn’t included in the airfare.

Purchased a business class ticket and got a economy seat with center seat blocked they call it business. 3100usd ticket on a flight where economy costs 500usd The biggest scam insult have had on a regular airline. Avianca should be in the low cost category and kicked out of Star Alliance. I want the difference to be credited. Ets see what Avianca does. No reply so far. Avianca = low cost airline. Beware

Business class seats did not lie flat. There was only powdered milk for your coffee....in Business Class!! Food was good.

There isn't much space in-between seats and even water needs to be paid for during the flight.

We did not know about the bag fees until check in. They are way too high. It’s insane. We also had a huge delay and everything costed extra which was very annoying.

Lounge for business was closed. Boarding was rush and stand by. Seat for business is just the middle seat blocked and some more leg room.

So so, you feel like you have to pay for everything each time

COP 7,000 for a cup of mediocre coffee. I thought I was on Spirit Airlines for a minute. Otherwise the flight was fine. Nothing exceptional to report.

please see previous response; it covers the whole travel trajectory.

Overpriced checked bag price of $120 and they charge you for carryon if the size is not minimal of $120.

Be very careful of the initial low price because Avianca wil bill you for a carryon of $120 or a checked bag for $120. Also, be careful with connections because the customs entry process is slow and the connecting terminal is not close.

Boarding was delayed and we had to get on buses to plane so group # didn't matter. No food or drinks served gratis. Seats were small, knees smashed into the seat ahead, didn't recline. Crew was excellent though.

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

Our original booking with Kayak -our first experience -was exactly what we wanted and worked well. Updates were friendly and reassuring as were the contacts with UnderPricer so a big win-win. We learned a lot on your reliability and will definitely put you on our organisational list for the future.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

Plane and seats ok. Dinners going and coming back were not fantastic. Breakfast from Seattle to London fine with bagel, cheese and fried egg. Second meal on London to Seattle not my favorite of kind of pizza sauce in a pastry. Came with water about three different times on each of my long flights. Staff on all very friendly and helpful.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

We ordered kids meals - which were not kid friendly at all! (the breakfast that is - scrambled eggs on a bed of spinach and asparagus?)

Uncomfortable seats. Crazy seat assignments separating families when they could easily have put them together. Good communication from pilot about arrival time after delay in departure. Toilet ran out of water in sink. Snack box poor for flight of this length.

The bed in Club class was not very comfortable, everything else was good.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

Book cheap flights from South America to the United Kingdom

Cheapest flights to the United Kingdom from South America found in 2025

Recent return flight deals

22/6Sun
1 stopEthiopian Air
24h 35mGRU-LGW
30/6Mon
1 stopEthiopian Air
34h 10mLGW-GRU
£398
17/6Tue
1 stopEthiopian Air
24h 40mGRU-LGW
30/6Mon
1 stopEthiopian Air
34h 10mLGW-GRU
£465
21/10Tue
1 stopTAP AIR PORTUGAL
19h 30mGRU-LGW
8/11Sat
1 stopTAP AIR PORTUGAL
14h 35mLGW-GRU
£480
16/10Thu
1 stopTAP AIR PORTUGAL
34h 25mGRU-LGW
27/10Mon
1 stopTAP AIR PORTUGAL
14h 40mLGW-GRU
£483
23/10Thu
directLATAM Airlines
11h 20mGRU-LHR
10/11Mon
directLATAM Airlines
11h 40mLHR-GRU
£583
7/10Tue
directLATAM Airlines
11h 20mGRU-LHR
11/11Tue
directLATAM Airlines
11h 40mLHR-GRU
£584
21/10Tue
directBritish Airways
11h 20mGRU-LHR
13/11Thu
directBritish Airways
11h 45mLHR-GRU
£589
16/10Thu
1 stopBritish Airways
18h 10mGIG-LHR
2/11Sun
1 stopBritish Airways
15h 20mLHR-GIG
£591
5/6Thu
1 stopAvianca
28h 25mSCL-LHR
23/6Mon
1 stopAvianca
20h 20mLHR-SCL
£706
7/6Sat
1 stopAvianca
28h 25mSCL-LHR
8/6Sun
1 stopAvianca
20h 20mLHR-SCL
£718

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Recent one-way flight deals

14/5Wed
1 stopAvianca
28h 45mEZE-LHR
£102
13/5Tue
1 stopAvianca
33h 55mEZE-LHR
£106
23/6Mon
1 stopTAP AIR PORTUGAL
14h 05mGRU-LHR
£326
23/6Mon
1 stopTAP AIR PORTUGAL
29h 00mGRU-LGW
£330
24/6Tue
1 stopAir Europa
15h 10mGRU-LGW
£331
10/6Tue
1 stopAir Europa
22h 35mGRU-LGW
£343
25/10Sat
2 stopsLATAM Airlines
18h 15mGIG-LHR
£408
10/8Sun
directLATAM Airlines
11h 20mGRU-LHR
£430
31/7Thu
directBritish Airways
11h 20mGRU-LHR
£439
5/8Tue
directBritish Airways
14h 10mSCL-LHR
£447

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Last minute flights from South America to the United Kingdom

Last minute flight, train and bus deals

1/5Thu
multi-stopLufthansa
16h 25mGRU-LHR
14/5Wed
multi-stopLufthansa
14h 20mLHR-GRU
£864
4/5Sun
multi-stop
46h 10mGRU-LGW
11/5Sun
multi-stop
15h 50mLGW-GRU
£879
3/5Sat
multi-stopLATAM Airlines
29h 05mGIG-LHR
11/5Sun
multi-stopLATAM Airlines
17h 25mLHR-GIG
£981
3/5Sat
multi-stopLATAM Airlines
22h 30mSCL-LHR
25/6Wed
multi-stopLATAM Airlines
54h 58mLHR-SCL
£994
30/4Wed
multi-stopBritish Airways
15h 20mEZE-LHR
30/5Fri
multi-stopBritish Airways
16h 25mLHR-EZE
£999
30/4Wed
multi-stopTAP AIR PORTUGAL
33h 05mGRU-LGW
21/5Wed
multi-stopTAP AIR PORTUGAL
16h 20mLGW-GRU
£1,040
1/5Thu
multi-stopBritish Airways
17h 05mGRU-LHR
3/6Tue
directBritish Airways
11h 45mLHR-GRU
£1,042
4/5Sun
multi-stopTAP AIR PORTUGAL
29h 00mGRU-LGW
11/5Sun
multi-stopTAP AIR PORTUGAL
16h 40mLGW-GRU
£1,043
3/5Sat
multi-stopAvianca
34h 40mSCL-LHR
25/6Wed
multi-stopAvianca
29h 25mLHR-SCL
£1,168
1/5Thu
multi-stopAvianca
34h 05mGIG-LHR
9/5Fri
multi-stopAvianca
30h 20mLHR-GIG
£1,236

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Everything you need to know for your flight to the United Kingdom

Cabin class types available on flights to South America

Cabin classes available on flights to South America. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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