LHR - BUE

£366 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 15/5. 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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Everything you should know

Cheapest return fare
£742
Typical prices: £1,041-£853
Avianca
Thu 28/5Wed 10/6
LHR - EZE • 1 stop
Cheapest direct flights
£945
British Airways
Thu 28/5Wed 10/6
LHR - EZE • Direct
Top airlines
Cheapest • from £742 (return)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Heathrow and Buenos Aires. You’ll need at least 1 connection.
Insights
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Insights
Top stopover airports
Cheapest • Avg £749 (return)
Shortest trip • 15h 05m (one-way)
Insights
Insights
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Insights
Top routes
Cheapest
Most popular
Insights
Insights
Insights
Insights
When to travel
Cheapest • 72% price drop
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 Buenos Aires!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Buenos Aires

Thu, 28 May - Wed, 10 Jun
Avianca Logo
22:05 - 15:40
LHR
-
EZE
21h 35m
1 stop
Avianca Logo
16:50 - 15:35
EZE
-
LHR
18h 45m
1 stop
£742Avianca
Thu, 4 Jun - Mon, 8 Jun
Avianca Logo
22:05 - 15:40
LHR
-
EZE
21h 35m
1 stop
Avianca Logo
16:50 - 15:35
EZE
-
LHR
18h 45m
1 stop
£749Avianca
Thu, 28 May - Wed, 10 Jun
Avianca Logo
22:05 - 15:40
LHR
-
EZE
21h 35m
1 stop
Avianca Logo
16:50 - 15:35
EZE
-
LHR
18h 45m
1 stop
£752Avianca
Mon, 1 Jun - Sun, 7 Jun
Avianca Logo
22:05 - 00:25
LHR
-
EZE
30h 20m
1 stop
Avianca Logo
16:50 - 15:35
EZE
-
LHR
18h 45m
1 stop
£753Avianca
Mon, 25 May - Sun, 7 Jun
Avianca Logo
22:05 - 15:40
LHR
-
EZE
21h 35m
1 stop
Avianca Logo
16:50 - 15:35
EZE
-
LHR
18h 45m
1 stop
£753Avianca
Thu, 4 Jun - Sun, 7 Jun
Avianca Logo
22:05 - 15:40
LHR
-
EZE
21h 35m
1 stop
Avianca Logo
07:10 - 15:35
EZE
-
LHR
28h 25m
1 stop
£754Avianca
Thu, 28 May - Wed, 10 Jun
Avianca Logo
22:05 - 15:40
LHR
-
EZE
21h 35m
1 stop
Avianca Logo
16:50 - 15:35
EZE
-
LHR
18h 45m
1 stop
£755Avianca
Tue, 26 May - Tue, 2 Jun
Avianca Logo
22:05 - 00:25
LHR
-
EZE
30h 20m
1 stop
Avianca Logo
16:50 - 15:35
EZE
-
LHR
18h 45m
1 stop
£756Avianca
Mon, 21 Sep - Sun, 4 Oct
Avianca Logo
22:05 - 00:25
LHR
-
EZE
30h 20m
1 stop
Avianca Logo
07:10 - 15:35
EZE
-
LHR
28h 25m
1 stop
£764Avianca
Sat, 6 Jun - Mon, 8 Jun
Avianca Logo
22:05 - 15:40
LHR
-
EZE
21h 35m
1 stop
Avianca Logo
07:10 - 15:35
EZE
-
LHR
28h 25m
1 stop
£765Avianca
Booking Insights

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.

How much is a return flight from London Heathrow Airport to Buenos Aires?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London Heathrow Airport to Buenos Aires departing in May.

What is the cheapest London Heathrow Airport 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 Heathrow Airport to Buenos Aires costs £972 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 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 March, where tickets cost £171 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is £809 and £743 respectively.

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 1 week before departure. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

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

Low seasonJune
Cheapest flight£366
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (38% 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 £366 for a one-way ticket and £742 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?

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

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

    The two airlines most popular with KAYAK users for flights from London to Buenos Aires are LATAM Airlines and Air France. With an average price for the route of £1,006 and an overall rating of 7.4, LATAM Airlines is the most popular choice. Air France is also a great choice for the route, with an average price of £1,089 and an overall rating of 7.4.

  • 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.

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 Buenos Aires or less round-trip.

Reviews of the top 5 airlines flying 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.
7.4
LATAM AirlinesOverall score based on 1913 reviews
7.5Boarding
7.0Entertainment
8.0Crew
6.7Food
7.3Comfort
Airline reviews

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

10.0 ExcellentYelen, Mar 2026
ATL - TPA
Read more LATAM Airlines reviews

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

It was delayed for 2 hours. Then when we arrived they took us on a very uncomfortable bus and left us there. The bus driver wouldn't let us out because no one from Latam was there. Everything was disaster.

Apart of Sky miles delta. And they go everywhere in Brazil

Latam wouldn’t tell me how much checked luggage would until I was at the airport and they charged me the highest price possible. Besides that, it was okay.

Comfort in exit seat was excellent. FLight crew and flight were excellent. However exit seat tray table was broken so could not use it. Entertainment monitor did not work at all despite attempts to reset it.

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

Good flight, boarding ok and crew very nice. Flight was not full so I was able to be very comfortable. Blanket and pillow provided with was good as it was very cold during the flight . Food was very good(small snack sandwich and an excellent piece of orange cake). Overall good flight, no complaints.

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.

Poor, the airline was not able to help me move flights.

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.

Transportation from gate to airplane was poor we stayed in hot bus for 20 minute no vantilation

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

Delayed and missed connections on leaving the states and returning Planes were old and small- very uncomfortable. Meals were good but very infrequent service for even water/drinks. No explanations for 3+ hour delay

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

Charging $300 to be able to pick a seat next to your wife was nothing less than extortion.

I’m very mad because I paid an extra $105 to change seats to an exit row with more leg room. The app clearly showed a gap in between the seats in the row I changed my seat to and I paid for it. When I boarded the plane, it wasn’t an exit row seat and no more room than my original seat. I feel like I was ripped off $105.

I had a great experience , crew was great and enjoyed the entertainment options I will be booking my next International trip with them .

Front desk was closed at 6 pm, I was unable to get my boarding pass and as such missed my connecting flight home.

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

Flight attendant was very rude helping me out. Food was discussing did not eat any of it.

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.

United lost my travel information and canceled my original flight. I had a seat assignment but was refused the booking. I had to prove that I went to Germany on United Very concerned about security that no one recorded my passport from Cleveland to NY and NY to Frankfurt I arrived at home at 12:30am on Saturday instead of 8pm I expect a full refund from United Please provide information to assure compensation

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!

Flight was late arriving. So, we left 25 min late. Pilot made some time up during the flight. Therefore, we arrived alittle past original time.

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

This is one of the best flights i had. Good boarding, good seats , good food, and nuce stuff and clean toilets I took the Tourist upgrade and indianischer food , the best.

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

The experience was great. A330 needs an upgrade between RDU and FRA and vice-versa.

The map feature on the display at the seat had challenges. The biggest issue was the flight had no WIFI. Most of the smaller planes now have free WIFI. American Airlines on the flight over had WIFI you could purchase. With 8-10 hours on a single flight, the ability to do work via WIFI is essential!!

A shout-out to the flight attendent, Lauren, who was the main person assisting me. She was amazing - perfect balance of bright, cheerful, engaging, yet formal

Cramped seating but standard in all smaller aircrafts today no matter what airlines. Crew very helpful, friendly & attentive so makes up for that.

Wonderful business class flight in a lovely new plane with an excellent crew

OK, except for a cabin attendant's lack of attention.

efficient. on time. cabin crew were very professional and very nice to deal with. would definately fly BA again.

It was great overall. A few slight improvements could be made on the onboarding process at the Gates with announcements and clarity of communications (both at the gate and in flight). The movies in the entertainment options could be improved for bollywood, hollywood.

I alrady responded to this request, and expllaned at length that this was the worst flying experience in my 77 years. I will NEVER fly BA again.

Airbus A350 is poorly designed for wheelchair users and reduced mobility passengers. The angle of the pods makes it awkward to transfer. I was able to but I have ab stability. It could be a real challenge for people with more severe mobility impairments. You'd think Airbus would have come up with a solution for this or thought more about us disabled folks more when designing this aircraft.

The crew has always been great on BA. They are very friendly and accommodating. I like that they have vegetarian options already in the menu. And the free wine is a nice perk.) I noticed (both directions of my trip) minor upgrades/ replacements needed on the plane itself (touch screen didn't work with touch; bathroom light didn't go on). However, this is one of my favorite airlines.

The crew was great! They waited for me as Air Canada flight was delayed by 1:15 hours from Ottawa to Toronto. I am a bit disappointed that we could only use wifi for entertainment but I survived! The only thing I would of liked is a more comfortable seat. The seat cushions are not thick enough for flights longer than 3 hours. Aside from that, everything was great.

Overall, the flight went well and the service was good. However, there was a very frightening moment during landing in Bogotá. Just as the plane was about to touch down, it suddenly went back up into the air. The aircraft was not descending straight and seemed to move left and right, which made the situation feel unstable. This was quite scary. After going back up, the plane circled for about 15 minutes before attempting to land again. Although I understand that safety always comes first and situations like this can happen, it was still a shocking experience for passengers.

I had bad experiences before now was excellent I am glad they have business class again

Horrible experience with Avianca, they delayed their flight and when we arrived to NYC, AVIANCA took 1 hr y 30 mins to park the airplane and all passenger get off the plane, it made me lost all my trains to get back home and I came back to my place at 3 am instead of 12 am. On the top of that their plane seat are so uncomfortable and is not enough space and killed my legs and knees, Avianca used to be good when it was a Colombian company, now after Brasilian company bought them, their service quality is bad and their flights are delayed and oversold.

It was delayed and I lost my connection flight to Cali and I missed my Mom's funeral

only a bag of chips and a bottle of water in business class was served

Not good, tried to purchase a first class upgrade and they couldn’t get it done. Was super uncomfortable the whole time.

Staff are the rudest in the industry … awful customer service … will never fly Avianca again

The flight attendant smashed her beverage cart into my knee, causing significant amount of pain. The seats were extremely uncomfortable. No food or drink is offered unless you want to pay the ridiculous prices for it. The schedule of flying in the overnight hours is also very uncomfortable.

Last seat of Bussines Class it does recline but passenger seating behind kept pushing since they did not have space once my seat was reclined

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

Information on your arrival and departure airports