LHR - BUE

£382 Find Cheap Flights from London Heathrow Airport 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 Heathrow to Buenos Aires departing on 29/4. 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.
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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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Cheap Flight Deals from Heathrow to Buenos Aires (LHR-BUE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow 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.

Recent return flight deals from Heathrow to Buenos Aires

KAYAK's recommended return flight deals from the most popular airlines that fly from Heathrow to Buenos Aires.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
 Logo
15:00 - 12:50LHR-EZE
25h 50m2 stops
 Logo
23:55 - 13:45EZE-LHR
33h 50m1 stop
Thu, 5 Jun - Wed, 18 Jun
Air France Logo
06:15 - 21:45LHR-EZE
19h 30m1 stop
Air France Logo
23:55 - 08:00EZE-LHR
28h 05m1 stop
£763Air France
Find Deal
Tue, 3 Jun - Tue, 24 Jun
Lufthansa Logo
16:30 - 06:25LHR-EZE
17h 55m1 stop
Lufthansa Logo
16:40 - 15:40EZE-LHR
19h 00m1 stop
£783Lufthansa
Find Deal
Wed, 21 May - Tue, 23 Sep
Lufthansa Logo
13:45 - 06:25LHR-EZE
20h 40m2 stops
Lufthansa Logo
16:40 - 15:40EZE-LHR
19h 00m1 stop
£801Lufthansa
Find Deal
Wed, 21 May - Tue, 23 Sep
LATAM Airlines Logo
21:20 - 10:30LHR-AEP
17h 10m1 stop
LATAM Airlines Logo
14:55 - 15:05AEP-LHR
20h 10m1 stop
£822LATAM Airlines
Find Deal
Wed, 4 Jun - Wed, 25 Jun
LATAM Airlines Logo
21:20 - 12:00LHR-AEP
18h 40m1 stop
LATAM Airlines Logo
14:55 - 15:05AEP-LHR
20h 10m1 stop
£848LATAM Airlines
Find Deal
Thu, 5 Jun - Thu, 12 Jun
British Airways Logo
11:30 - 07:35LHR-EZE
24h 05m1 stop
British Airways Logo
18:10 - 13:35EZE-LHR
15h 25m1 stop
£855British Airways
Find Deal
Fri, 6 Jun - Fri, 20 Jun
British Airways Logo
17:10 - 07:35LHR-EZE
18h 25m1 stop
British Airways Logo
21:30 - 17:15EZE-LHR
15h 45m1 stop
£860British Airways
Find Deal
Thu, 5 Jun - Thu, 31 Jul
Iberia Logo
22:00 - 10:35LHR-EZE
16h 35mdirect
Iberia Logo
21:30 - 18:45EZE-LHR
17h 15m1 stop
£934Iberia
Find Deal
Mon, 15 Sep - Fri, 26 Sep
Iberia Logo
22:00 - 10:35LHR-EZE
16h 35m1 stop
Iberia Logo
21:45 - 19:10EZE-LHR
17h 25m1 stop
£949Iberia
Find Deal
Mon, 15 Sep - Wed, 24 Sep

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

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

What is the cheapest London Heathrow Airport to Buenos Aires flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from London Heathrow Airport to Buenos Aires.
Our data shows that the cheapest route for a return flight from London Heathrow Airport to Buenos Aires cost £801 and was between London Heathrow Airport (LHR) and Buenos Aires Ministro Pistarini Airport (EZE). On average, the best prices are found if you fly this route. The average price for a return flight for this route is £801.

What’s the cheapest day of the week to fly from London Heathrow Airport to Buenos Aires?

The average price of all round-trip flights from London Heathrow Airport to Buenos Aires clicked on KAYAK for each day over the last 12 months.
For London Heathrow Airport to Buenos Aires, Wednesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Buenos Aires back to London Heathrow Airport, the best deals are generally found on Thursday, with Tuesday being the most expensive.

What is the cheapest month to fly from London Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport to Buenos Aires is January, where tickets cost £838 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £1,223 and £977 respectively.

Can I save money by flying with a stopover from London Heathrow Airport to Buenos Aires?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.
Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £2,732 on average.

How far in advance should I book a flight from London Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport to Buenos Aires, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know - Cheap tickets from London Heathrow Airport to Buenos Aires

Low season

May

High season

December

Cheapest flight

£382
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly (32% more expensive on average)
Flight from London Heathrow Airport to Buenos Aires Ministro Pistarini

When to book flights from Heathrow to Buenos Aires

Are your dates flexible? Find out the best times to travel from Heathrow 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 London Heathrow Airport to Buenos Aires flights

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

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Buenos Aires was £510 for a one-way ticket and £949 for a return.

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

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at one of these airports: Buenos Aires Jorge Newbery or Buenos Aires Ministro Pistarini.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from London to Buenos Aires are KLM and Finnair. With an average price for the route of £949 and an overall rating of 7.8, KLM is the most popular choice. Finnair is also a great choice for the route, with an average price of £867 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from London Heathrow Airport 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 Heathrow Airport to Buenos Aires.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport 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 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 from London Heathrow Airport 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 Heathrow Airport with another airline.

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

See more FAQs

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

  • Looking for a cheap flight from Buenos Aires to London Heathrow Airport? 25% of our users found flights on this route for £754 or less one-way and £909 or less round-trip.

Top 5 airlines serving from Heathrow 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 Heathrow 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.
7.6
FinnairOverall score based on 1272 reviews
8.1Crew
7.6Boarding
7.4Comfort
6.9Entertainment
6.7Food
Airline reviews

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

8.0 ExcellentAnonymous, Jan 2025DFW - CVG
Read more Finnair reviews

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

Any flight that lands safely is a good flight. However our leg from Helsinki was delayed 1 hour with no explanation. The delay would not allow us to make our connection to Cincinnati. I was informed by American Airlines that our Cincinnati flight was rescheduled for the following day. I immediately made a non refundable hotel reservation in Dallas. Upon exiting the plane at Dallas I was given a hotel voucher. Nice, but I can't get a refund on the hotel I booked. A little communication would have been helpful. Food on Finnair is below quality of Korean Air.

The cabin crew really looked like they wanted to be somewhere else. They weren't really interested in providing an attentive service to full fare paying passengers at all. However the Captiain's in flight announcements were relaxed and very entertaining.

Crew were professional and responsive. Food was mediocre and breakfast could do with revampinmg

Food was very ordinary for premium economy, very small portions.

i dont know WHY they call it business class. the seats are NOT significantly wider than economy seats, they just do not let the middle seats be beepked to give the illusion of more space between passengers. the seats do NOT recline any more than economy seats either. the only real difference is the full meal served to business (vs none for economy). I would rather have a wider, lie flat ACTUAL business class seat with no food for a 3 hr flight. this was pretty disappointing to say the least.

There wore nice leather like sits, in my opinion seats lay out bit tight . Crew was great they did averything possible to make averywone comfortable as possible, food was, think worst I ever head on flight, head chicken and yellow rice. Ice cream was a nic treat.

Our previous flight was delayed but they waited for us to board.

Flight was delayed, short time connection to next flight but we make it, service was good, worth to fly just to try thair on board blueberry juce. Eccelent communication with airline.

My American Airlines flight was deleted and you guys never let me know

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.

Delta has an outstanding service. They are courteous and punctual most of the time. The flight departed a half hour late but we arrived 15 minutes early.

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.

Plane never left the ground. Mech issues - entire trip was rerouted through united.

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.

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.

We travelled with Level, which is a subsidiary of Iberia. They mixed up all our seats, downgraded few from premium economy fo economy. The crew were not professional, they seem to be in a rush! Also some with an attitude

business class food was pretty average otherwise it was a good experience

I wish they could put the pre-tsa check on the tickets or global entry.

The boarding was a nightmare. Iberia would not let me check in in advance. They then refused to issue a boarding pass in Paris and said I would get the boarding pass in Madrid. In Madrid, there was no transit desk, no help. I had to run around and find someone to issue the pass. I only had an hour and risked missing the connection. Only at the gate did Iberia tell me they were overbooked and had downgraded me. I was stressed, exhausted, almost missed the connection because of Iberia’s conduct. Unacceptable.

Overall a great. However, the seating is way too narrow, for guys with any shoulder width. Luckily the crew moved the guy next to me, or it would have been miserable.

When having a connection at Madrid, it’s extremely confusing. You must travel from your arrival gate, all the way down stairs to a security check point, go up stairs, then downstairs to another security check. Then make your way to your gate. All the while traveling through a “mall” inside the airport which makes it difficult. 10/10 don’t recommend connecting flights through Madrid.

The plane was not well maintained. The entertainment system didn’t work properly, eg moving map. Many of the seat controls did not work. Cabin temperature fluctuated considerably during the flight. The seat allocated was poor, it was noisy and offered no privacy. The perfume in the toilet triggered severe allergies. Crew was very goid.

My baggage did not arrive, missed connection, service representative was not helpful.

I had assist travel booked in Denver to Manchester, but not listed in HeathRow, my daughter use a spare wheel chair herself for me , when going thro to board at Heathrow there was no help travel down for the ramp until a member of assistance stepped forward and insisted he would take me down the very steep ramp, seems he was the only person concerned with my safety.

Sub par plane for an international flight. My seat was so cramped even after I paid for more legroom. i was basically in the aisle with everyone banging into me the whole time. Will not book again unless I have no other choice.

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

Very helpful crew, including airport people, getting us in wheelchairs and working so hard to get us where we need on time!

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.

Crew were friendly and very helpful Plane was clean and the legroom is standard. Overall a good flight, no complaints.

Flight was cancelled and I got rebooked with anther airline. Also had booked a direct flight and got a layover.

They were late and I missed my flight for Chicago. Terrible experience with Austrian airline this time.

Seats in the center row have obstructed leg room. Entertainment center did not respond well. Staff was good, but coukd be of limited help

Great flight. Friendly crew. Good food. Nice clean cabin and toilet was a good size. I like the starliner.

Flight Attendant Karen Lynn was an absolute delight. She assisted in every portion of the services provided throughout the flight, aided with any and all concerns expressed by passengers, and even helped comfort an upset child who was one of five of a traveling family. This quality of service is what keeps me coming back to American. Thank you!

The worst, flight cancelled because the aircraft was not full. Heathrow ground crew totally not helpful and arrogant. Lady proposed us flight with 40min layover instead of direct and said it is our problem of course she was unable to do anything as everything was beyond her control she claimed. after calling on hotline another flight was booked. Flight was cancelled last second so we could not take direct from Zurich but we had to stay overnight in London.

Very quick boarding. I was surprised we only got a small water and small thing of cookies, everything else was for purchase. No entertainment. Crew was excellent though.

Flight delayed in terms of boarding and Kayak was great in updating but the team on the groping at British Airways were really poor

A basic tea/ coffee and a snack could be provided especially for long distance flyers.

The information in the airport, and the app was different. Be aware. Different terminals in Stuttgart, so we had to walk a lot. It's a small airport so it wasn't a big deal, but it was ludicrous to see the error in the app.

Food was terrible , crew were excellent , IFE was dire . Overall comfortable seat and cabin. Nothing special .

If my tv wasn’t broken and I wasn’t in a seat that didn’t allow for sleeping

Very long and took extra push back to BA staff to get a realistic flight after they made me miss my original direct flight. Eventually landed 9 hours late and incurred many extra costs with other missed bookings

They overbooked the flight by 3 people. It is completely unacceptable to tell 3 people, with paid tickets, that need to get home for children etc, that they need to stay another night. No compensation. No apology.

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

Information on your arrival and departure airports

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