LON - BUE

£465 Find Cheap Flights from London to Buenos Aires

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Buenos Aires departing on 10/11. 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 Buenos Aires

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Buenos Aires.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Buenos Aires.
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Flight Deals

Cheap Flights from London to Buenos Aires (LON-BUE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Buenos Aires 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 London to Buenos Aires

Thu, 26 Feb - Fri, 20 Mar
Avianca Logo
21:40 - 05:50LHR-EZE
35h 10m1 stop
Avianca Logo
16:55 - 14:35EZE-LHR
18h 40m1 stop
£807Avianca
Find Deal
Sat, 7 Mar - Sat, 21 Mar
Avianca Logo
21:40 - 05:50LHR-EZE
35h 10m1 stop
Avianca Logo
16:55 - 14:35EZE-LHR
18h 40m1 stop
£808Avianca
Find Deal
Sun, 7 Dec - Sat, 20 Dec
Lufthansa Logo
16:30 - 07:55LHR-EZE
18h 25m1 stop
Lufthansa Logo
17:45 - 15:50EZE-LHR
19h 05m1 stop
£812Lufthansa
Find Deal
Tue, 9 Dec - Sat, 13 Dec
Lufthansa Logo
16:30 - 07:55LHR-EZE
18h 25m1 stop
Lufthansa Logo
17:45 - 12:50EZE-LHR
16h 05m1 stop
£818Lufthansa
Find Deal
Sat, 24 Jan - Fri, 13 Feb
Iberia Logo
19:40 - 17:55LGW-EZE
25h 15m1 stop
Iberia Logo
22:45 - 19:00EZE-LGW
17h 15m1 stop
£826Iberia
Find Deal
Sat, 24 Jan - Fri, 13 Feb
Iberia Logo
19:40 - 17:55LGW-EZE
25h 15m1 stop
Iberia Logo
22:45 - 19:00EZE-LGW
17h 15m1 stop
£828Iberia
Find Deal
Tue, 25 Nov - Tue, 2 Dec
LATAM Airlines Logo
20:15 - 09:40LHR-AEP
16h 25m1 stop
LATAM Airlines Logo
18:20 - 14:05AEP-LHR
16h 45m1 stop
£853LATAM Airlines
Find Deal
Sun, 15 Mar - Sun, 22 Mar
Air Europa Logo
10:00 - 08:50LGW-EZE
25h 50m1 stop
Air Europa Logo
13:15 - 16:25EZE-LGW
24h 10m1 stop
£860Air Europa
Find Deal
Fri, 6 Mar - Sun, 15 Mar
Air Europa Logo
17:25 - 08:50LGW-EZE
18h 25m1 stop
Air Europa Logo
13:15 - 16:25EZE-LGW
24h 10m1 stop
£861Air Europa
Find Deal
Wed, 3 Dec - Mon, 8 Dec
LATAM Airlines Logo
20:15 - 14:00LHR-AEP
20h 45m1 stop
LATAM Airlines Logo
14:55 - 14:05AEP-LHR
20h 10m1 stop
£868LATAM Airlines
Find Deal

Everything you should know

Top airlines
Avianca
Cheapest • from £807 (return)
LATAM Airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Video guide: How to find cheap flights to Buenos Aires
Watch video
Watch video
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Top routes
LHR-EZE
Cheapest
LHR-EZE
Most popular
Insights
Insights
Insights
Insights
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 11% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 11% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£807
Typical prices: £788-£1,091
Avianca
Thu 26/2Fri 20/3
LHR - EZE • 1 stop
Cheapest direct flights
£987
Typical prices: £1,172-£1,572
British Airways
Wed 26/11Wed 3/12
LHR - EZE • Direct
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Buenos Aires!
Booking Insights

KAYAK's insights & trends for London to Buenos Aires flights

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

Find cheap flights to Buenos Aires
Find cheap flights to Buenos Aires

Planning a trip from London to Buenos Aires? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What is the cheapest London to Buenos Aires flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from London to Buenos Aires costs £949 on the route between London Heathrow Airport (LHR) and Buenos Aires Ministro Pistarini Airport (EZE). It is also the most popular route.

What is the cheapest month to fly from London to Buenos Aires?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Buenos Aires, 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 London to Buenos Aires is September, where tickets cost £859 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is £1,280 and £1,062 respectively.

How far in advance should I book a flight from London to Buenos Aires?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Buenos Aires, 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 London to Buenos Aires, you should book around 2 weeks before departure, which saves you about 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know - Cheap tickets from London to Buenos Aires

Low seasonJune
Cheapest flight£465
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (32% more expensive on average)
Flight from London Heathrow Airport to Buenos Aires

When to book flights from London to Buenos Aires

Are your dates flexible? Find out the best times to travel from London to Buenos Aires based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 flights from London to Buenos Aires

  • Where to report lost luggage or valuables at Ezeiza Airport?

    You should contact the Airport Security Police (PSA) if you lose an item or document in the parking areas or terminals. The PSA service is available 24h every day, but you should check with your airline if your luggage was lost during transit.

  • Is there a luggage storage and wrapping service at Ezeiza Airport?

    Luggage lockers and storage at Ezeiza Airport are currently unavailable. However, passengers can have their luggage wrapped by Secure Bags, a luggage packing and wrapping service located in the public areas of the arrival terminals.

  • Are there resting hotels and resting zones inside Ezeiza Airport?

    There are no hotels inside Ezeiza Airport, but travellers can get accommodation at nearby facilities, including Posada Quinta Pata and Eze Inn Boutique Hotel. Ezeiza Airport has no resting zones, but travellers with VIP memberships can access several VIP lounges inside the airport. In some VIP lounges, travellers can pay at the door.

  • Where do Cabify and Uber pick passengers at Ezeiza Airport?

    Cabify and Uber users must coordinate with the driver for pick-up at the parking area. However, passengers'drop-off and pick-up areas at Ezeiza Airport are exclusive to official cabs. It costs at most 1847.13 ARS (14.52 GBP) to travel from Ezeiza Airport to downtown Buenos Aires.

  • Can you request a tax (VAT) refund at Ezeiza Airport?

    Ezeiza Airport allows foreign passengers to request VAT refunds for purchases of locally produced products. The agency responsible for this procedure is known as Ezeiza Global Blue Airport. Its offices are available on Terminal C, the public boarding area, and Terminal A.

  • Does London Heathrow have quiet areas?

    Some of the terminals at London Heathrow have quiet rooms. The airport also has quiet areas that are far away from the busy terminal areas. Quiet areas at London Heathrow aren't exclusive to travellers with special needs and can be accessed by those looking for a calm and quiet environment.

  • Where can I stay at London’s airports?

    As the flight to Buenos Aires is long, it’s a good idea to get an airport hotel the night before your flight. There is Aerotel at London Heathrow (LHR) and Courtyard by Marriott at both Luton Airport (LTN) and Gatwick Airport (LGW). At Stansted Airport (STN) and London City Airport (LCY), there is Holiday Inn Express. To ensure you aren’t late for check-in, you can use the wake-up service on offer at the hotels.

  • What cities are located near London’s airports?

    London’s airports serve many UK cities. For instance, from Norwich, you can drive to Stansted Airport in about 1h 30min. From Brighton, it’s around 40min to Gatwick Airport, whereas, from Swindon, it’s approximately 1 hour to Heathrow Airport.

  • How can I lower my carbon emissions by taking a specific flight from London to Buenos Aires?

    Find a flight that emits fewer emissions, using the KAYAK search filter. For example, KLM flights from Heathrow Airport to Ezeiza International Airport release around 47% less CO2 than the industry standard for this route.

  • Which airlines provide Wi-Fi on flights from London to Buenos Aires?

    As it’s a long-haul flight from London to Buenos Aires, you might want to opt for a flight that has Wi-Fi. For instance, Air France provides passengers with internet access on board. You can search for airlines with this offering via the KAYAK search filter.

  • What is the cheapest flight from London to Buenos Aires?

    In the last 3 days, the lowest price for a flight from London to Buenos Aires was £465 for a one-way ticket and £807 for a return.

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

    On your way to Buenos Aires, you’ll fly out from one of these London airports: London City, London Heathrow, or London Stansted. You’ll be landing in one of Buenos Aires’s 2 airports: Buenos Aires Jorge Newbery or Buenos Aires Ministro Pistarini.

  • Which aircraft models fly most regularly from London to Buenos Aires?

    The Boeing 777 is the aircraft model that flies most regularly on the London to Buenos Aires flight route.

  • Which airline alliances offer flights from London to Buenos Aires?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between London and Buenos Aires, with SkyTeam being the most commonly used for this route.

  • What is the most popular stopover when flying to Buenos Aires from London?

    Madrid is the most popular stopover city among KAYAK users travelling from London to Buenos Aires.

  • Which is the best airline for flights from London to Buenos Aires, Finnair or LATAM Airlines?

    The two airlines most popular with KAYAK users for flights from London to Buenos Aires are Finnair and LATAM Airlines. With an average price for the route of £891 and an overall rating of 7.6, Finnair is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of £961 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from London to Buenos Aires?

    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 London to Buenos Aires.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buenos Aires from London 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 London to Buenos Aires?

    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 Buenos Aires with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Buenos Aires?

    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 Buenos Aires from London 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 London to Buenos Aires

  • Looking for a cheap flight from Buenos Aires to London? 25% of our users found flights on this route for £1,185 or less round-trip.
  • Ministro Pistarini International Airport (EZE) is the main airport in Buenos Aires, Argentina's capital city. The airport is located about 20 miles away from downtown Buenos Aires. Most long-haul flights, including flights from London airports, arrive and depart from here.
  • It takes approximately 50min to travel from EZE Airport to the city centre by car. Taxis and car rentals are some of the convenient and reliable transfer options from Ezeiza Airport. Car rental services are available at both Arrivals on Terminal A and Terminal B.
  • Most flights to Buenos Aires from London depart from London Heathrow, London city's high-functioning and central airport. There is also a one-stop flight from London Stansted to Ezeiza Airport via Iberia and Ryanair. Iberia and Air Europa also operate at least one-stop flights to Ezeiza Airport via Madrid. Travellers, including those from London, UK, can purchase a SIM card upon touching down at Ezeiza Airport. Upon migration clearance and collecting your luggage, head to the public hall and buy a SIM card at any of the airport's mobile service provider's stores.
  • Banco de LA Nacion Argentina operates a 24-hour Currency Exchange Office at Terminal A of Ezeiza Airport. Banco Nacion also has a bank at the Corporate Aeropuertos building.
  • Depending on where your final destination is, you might find it more convenient to fly to a specific Buenos Aires airport. For instance, you can drive to Zarate from Jorge Newbery Airport (AEP) in about 1h 20min, whereas you can get to Las Flores from Ezeiza International Airport (EZE) in around 2h 15min.
  • British citizens do not need a visa to enter Argentina, as you will be granted permission to stay in the country for up to 90 days. Should you need to stay longer, you should speak to the Argentina Immigration Office before the 90 days are up. Your passport also needs to be valid for the duration of your stay.

Reviews of the top 5 airlines flying from London to Buenos Aires

 
See real verified KAYAK customer reviews for airlines flying from London to Buenos Aires. 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 London to Buenos Aires? 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 1872 reviews
8.0Crew
7.3Comfort
6.7Food
7.0Entertainment
7.5Boarding
Airline reviews

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

2.0 MediocreBenjamin, Oct 2025MIA - LIM
Read more LATAM Airlines reviews

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

we were missing our luggage, trying to find someone to have any empathy was pretty much not happening....

The plane broke down at the Lima stopover and they offered to put me on a flight the be t day but I had to be back in LA that morning and so I had to buy another ticket from Avianca and United for $2k I asked LATAM for compensation and received none. Very bad experience

Poor handling of carry on luggage. We had a 8 hour stop in Santiago, are over 70 and, in spite of paying full fare they wanted to send carry on to luggage hold. No empathy. We had to show that several group 4/5 passengers were not sending their carry ons before they finally let Is keep them. Very poor .

I never got this flight. You sent me to Chile!!! And from Chile I got the other flight to São Paulo... I've arrived 7h latter than I was supposed to arrive because of Delta delays.

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.

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

Our flight was cancelled and it took them 5 hours to reschedule and the next morning they said we still didn’t have a new ticket.

We departed and landed on time, the aircraft was clean and comfortable, the crew were lovely. Online checkin worked well and the self service bag drop at the airport worked well. The a/c was an Airbus A330 and has been fitted with a good entertainment system with lots of choice in many languages. The price I paid for the flight was competitive with other airlines apart from the budget carriers, none of whom I was familiar with so I stuck to an airline I have used in previous visits to South America.

We didn’t have any entertainment. I tried to go online without success. The airplane was extremely cold and they didn’t have blankets.

Great staff, just very far from the main terminal, had to run to connect my flight. I had 90 minutes to spare. But my flight from Chicago was delayed also.

My luggage is lost and nowhere to be found, no response from airline

Boarding was a shitshow. Had to bus to the gate. No separate bus and boarding process for Business Class.

The plane was very old, no power outlets. We also had to wait a long time to board. They kept moving us to different lines before we actually could step foot on the plane. We ended up being delayed an hour but we were never told or informed for any reason. After the meal I asked for a coffee which the flight attendant forgot and I had to ask again. Overall not the worst but not the best experience.

Need to pay for headsets, water, or any extra except air to breath.

Sitting space was very tight and I am not big or fat (I am 5'10" 178 Lb), so eating was very challenging. The rest was good.

Sitting space was very tight, so eating was difficult. But everything else was good.

12 hours flight. Only one meal, not enough food. At the galley only water during the flight. Lavatories not clean. Headsets at extra cost.

Need to pay for a cup of water. No food. Need to pay for headsets.

Everything should improve! Service like a low cost but prices like a premium airline. Crew in general with bad manners arguing for everything. You pay for priority access but then they use buses, so your loose your advantage to put your carry on first. That was the purpose for paying for priority. Bording is a nightmare, people accessing the plane for bothering doors, front and rear, no matter which line do you have.

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

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.

We were delayed 2 hours because the crew was late. They need better planning by the crew, we had to sit in uncomfortable seats waiting for them.

Difficulty to check in online, but well handled at the airport. Flight delay was unfortunate. Crew was adequate but not what we have usually experienced from BA. Seat was not comfortable.

Good Poor. service onboard No food. Low quality for economy plus

This was a short flight. We sat in business class so we we were served a warm meal, which was nice. The flight attendants were very attentive, professional, and kind.

One of the crew members hit me with the car and not even says anything

Flight was delayed 3 hours and 15 minutes. The delay caused me to miss my tour group due to arriving late.

There's not enough leg room in economy class. The seats are very narrow as well.

Paid for my seat 4 months ago. Did not pay the extra for specific seat assignment ( never have and never was a problem). Could not electronically check in (found out it was due to overbooking and that unassigned seats get bumped first - never happened to me before). Luckily, did make the flight. Very stressful - would have been extremely disruptive for my travel plans. UK Visa - never notified by Kayak or BA that a visa was required. Had to spend 15 minutes to download and complete app at the flight counter and pay $25, and was told they would let me know in 3 days if I would get it (flight landing in 10 hours from when I completed app). Luckily, visa was approved before landing. Unnecessary stress created here. Food - main meal, curry chicken barely palatable with unrecognizable vegetable. Desert cup, cheesecake, also barely palatable. Salad cup was good. Small water offered only 3 times (before main meal, at main meal, at morning snack) - not nearly enough for long flight.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

Efficiency of staff, and comfort and cleanliness of aircraft was all great. Maybe a hot drink without payment at that time in the morning would be good!

If the plain wait for the passenger it should wait for the baggage!!

The plane was late (as was my flight out from Birmingham the day before)

Our seat numbers took a long time to be given to us. We were not seated together and I was put in the middle seat with both people on either side of me taking too much space!

The flight was delayed by an hour. Made the connection uncomfortably tight.

When we went to the lounge they told us to go into the main lounge and not the full business class section, later they told me that Lufthansa wont pay the full fee to alloq the business class passengers entry to the nicer sectikn where all the other airlines nusiness class passengers go into. Very poor arrangement.

Not what I expected for the last leg of a $5100 business class experience. Boarding was a nightmare. The flight was delayed and I had to keep checking my email to ensure I was at the right gate since the airline or the terminal had no clue until 15 mins prior to boarding. Food was gross, limited drink options.

Flights scheduled with impossible connections - Lufthansa apparently believes it takes 7mins to change terminals, go through passport control, re-clear security and walk 1.8kms…..and everything will work perfectly (which it never does at Frankfurt). No staff on hand to assist with transfers on delayed flights. No transfer guidance provided by app. No compensation offered for 6hr delay to connecting flight.

No Wi-Fi or food unless you pay an expensive fee.

We always use BA due to the direct flight options, we have always had a pleasant flight with BA.

There might be more food options for people who can't eat so much starch/sugar/bread/rice. Meat, cheese, walnuts/pecans for snack, maybe jerky or other kinds of meat-based snacks would be better than bread and rice and sweets. I had an extra chardonnay, which was fine. The entertainment was great.

Unfortunately, my flight was cancelled because of some sort of emergency over the Atlantic and had to return to London. While I think British Airways made every effort to mitigate the situation, I must say it was still pretty unpleasant. I do appreciate the fact, however, that British Airways put my safety first…and I think the effort to correct a bad situation was very sincere. But I think the process might be handled better in future.

Horrible leg room - coach seating with empty seat in middle on a 3 across seating. You buy business class for comfort which includes leg room. Absolutely no entertainment options either. Awful experience

Flight was 3h50 and was only provided with a packet of oat cookies and offered a cold drink. Thankfully i'd had breakfast but for a morning flight of that length some sort of breakfast should be included. There were 2 toilets for economy but due to turbulence we couldn't use them until the last 1hr which meant the queue was then huge. Would've been nice to open up the business one for those closest to the front to use.

Crew service was poor and very little difference between premium economy and economy. Disappointed.

My bags never made it on the flight and I now have to wait for them to arrive hopefully tomorrow. You can’t even track your bags in the app to see where they are since they didn’t arrive. You have to file a claim and then wait for them to inform you when you will receive your bag. We were already delayed for an hour due to baggage so I don’t understand how my bag didn’t make the flight.

One of the worst experience given the middle seat even asked for the change no one honored,boarded at the end and overall one of the worst experience

No WiFi in either flight. No leg room, the seat in front of me left dents on my knees and the tray was so low my knees propped it up if I tried to use it.

It was good although our flight to the UK was cancelled and rescheduled for two days later. This was after we were already seated on the plane. We missed the first leg of our trip. BA did put us up at a hotel and paid for our meals but we lost our hotel costs in Glasgow.

Everything you need to know for your flight from London to Buenos Aires

Other airlines flying from London to Buenos Aires

Flights from the other most popular airlines that fly from London to Buenos Aires according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

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