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Cheap flights from London Heathrow Airport to Buenos Aires from £484

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
1 נוב' — 8 נוב'1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from London Heathrow to Buenos Aires are usually found in February or March, booked 63 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Heathrow to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 2 אוקטובר 2025.

Round-trip from

£724

One-way from

£484

Popular in

December

Cheapest in

February

Average price

£942

Good round-trip deal

£1,493 or less
Avianca
  • Avianca
  • 15/11-22/11
  • 2 total stops
  • 69h 05m total
  • London to Buenos Aires
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23/11
  • 23/11
  • 3 total stops
  • 46h 20m total
  • London to Buenos Aires
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£48 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£23 potential savings vs. average return price).
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Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from London Heathrow to Buenos Aires (BUE).
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Find flight deals from Heathrow to Buenos Aires

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Buenos Aires
Explore the most affordable flight options available from Heathrow to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 אוקטובר 2025.

ש' 15/1121:40LHR - EZE
1 stop35h 10mAvianca
א' 23/1116:55EZE - LHR
1 stop18h 40mAvianca
Deal found 30/9£724
ב' 3/1121:40LHR - EZE
1 stop35h 10mAvianca
ב' 17/1101:40EZE - LHR
1 stop33h 55mAvianca
Deal found 1/10£725
ש' 15/1121:40LHR - EZE
1 stop35h 10mAvianca
ו' 21/1101:40EZE - LHR
1 stop33h 55mAvianca
Deal found 1/10£727
ב' 17/1106:20LHR - EZE
1 stop17h 00mMultiple Airlines
ד' 3/1216:25EZE - LHR
1 stop18h 25mMultiple Airlines
Deal found 30/9£728
ב' 3/1121:40LHR - EZE
1 stop35h 10mAvianca
ד' 19/1116:55EZE - LHR
1 stop18h 40mAvianca
Deal found 1/10£729
ג' 4/1121:40LHR - EZE
1 stop35h 10mAvianca
ג' 24/207:35EZE - LHR
1 stop28h 00mAvianca
Deal found 1/10£730
א' 30/1121:40LHR - EZE
1 stop35h 10mAvianca
א' 29/301:40EZE - LHR
1 stop33h 55mAvianca
Deal found 30/9£731
ד' 19/1121:40LHR - EZE
1 stop35h 10mAvianca
ג' 2/1216:55EZE - LHR
1 stop18h 40mAvianca
Deal found 30/9£732
א' 23/1121:40LHR - EZE
1 stop21h 10mAvianca
ג' 2/1216:55EZE - LHR
1 stop18h 40mAvianca
Deal found 30/9£741
א' 2/1112:05LHR - EZE
1 stop24h 15mUnited Airlines
ש' 15/1123:55EZE - LHR
1 stop28h 35mUnited Airlines
Deal found 30/9£741
ג' 11/1121:40LHR - AEP
1 stop35h 00mAvianca
ג' 18/1107:00AEP - LHR
1 stop28h 35mAvianca
Deal found 29/9£743
ב' 10/1121:40LHR - AEP
1 stop35h 00mAvianca
ב' 24/1107:00AEP - LHR
1 stop28h 35mAvianca
Deal found 30/9£745

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 2 אוקטובר 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Buenos Aires that are best for you.

Fly from

Heathrow

Fly to

Buenos Aires

Route

Depart

Return

Price

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

ה' 30/10

10:00-08:20

1 stop25h 20m

Buenos Aires Ministro Pistarini

ה' 12/2

23:55-10:15

1 stop31h 20m

£782

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

א' 26/10

12:05-08:20

1 stop23h 15m

Buenos Aires Ministro Pistarini

ה' 12/2

23:55-07:30

1 stop28h 35m

£782

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

ש' 1/11

11:35-07:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

ש' 22/11

22:05-10:15

1 stop33h 10m

£783

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

ה' 27/11

12:05-09:20

1 stop24h 15m

Buenos Aires Ministro Pistarini

א' 7/12

23:55-11:05

2 stops32h 10m

£836

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

ש' 1/11

10:00-08:20

1 stop25h 20m

Buenos Aires Ministro Pistarini

ש' 8/11

23:55-07:30

1 stop28h 35m

£838

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

ב' 27/10

10:00-06:20

1 stop23h 20m

Buenos Aires Ministro Pistarini

ג' 20/1

23:55-08:25

2 stops29h 30m

£885

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

ד' 22/10

08:00-08:00

2 stops28h 00m

Buenos Aires Ministro Pistarini

ש' 1/11

23:55-07:55

2 stops29h 00m

£885

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

ו' 31/10

07:25-06:20

2 stops25h 55m

Buenos Aires Ministro Pistarini

ו' 7/11

23:55-09:40

2 stops30h 45m

£885

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

ג' 21/10

22:05-00:10

1 stop30h 05m

Buenos Aires Ministro Pistarini

ו' 31/10

07:35-14:35

1 stop28h 00m

£886

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

ב' 17/11

12:05-09:20

2 stops48h 15m

Buenos Aires Ministro Pistarini

ב' 1/12

23:55-07:30

1 stop28h 35m

£886

Flights are sorted by cheapest return flights first.

Deals found on 29/9

Showing 1-10 of 43 results
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Best time to book a flight from Heathrow to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Buenos Aires

How far ahead should I book a flight from London Heathrow Airport to Buenos Aires?

Use this chart to determine the optimal time to book a return flight from Heathrow to Buenos Aires. Price data was last updated on 26 September 2025.

Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Buenos Aires. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to Buenos Aires?

Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Buenos Aires (average of £1,012). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,250). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to BUE?

Find hourly flight availability from Heathrow to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 אוקטובר 2025.

It’s typically best to fly out from London Heathrow Airport to Buenos Aires in the morning. Doing so could potentially save you 22% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from London Heathrow Airport to Buenos Aires?

Use this chart to determine the cheapest time to fly return from Heathrow to Buenos Aires. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to Buenos Aires flight should consider departing on Sunday at midday when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost for a return flight from London Heathrow Airport to Buenos Aires?

What’s the top stopover airport for flights from London Heathrow Airport to Buenos Aires?

Share of one-stop return flights from London Heathrow Airport to Buenos Aires chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Frankfurt am Main (FRA) – chosen by Cheapflights users on 26% of one-stop itineraries from London Heathrow Airport to Buenos Aires on Cheapflights.

What’s the cheapest stopover airport for flights from London Heathrow Airport to Buenos Aires?

Average return fare for one-stop flights from London Heathrow Airport to Buenos Aires, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Toronto (YYZ) is the most affordable one-stop option, with an average return flight price of £710.

What’s the fastest stopover option from London Heathrow Airport to Buenos Aires?

Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Buenos Aires, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 16h 11m.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Buenos Aires?

Average stopover duration for one-stop one-way flights from London Heathrow Airport to Buenos Aires, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 27m.

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated 2 אוקטובר 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Buenos Aires, such as Finnair, LATAM Airlines, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,332 reviews
Check prices

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,332 reviews
Finnair
7.6
Good
1,332 reviews
Check prices

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
LATAM Airlines
7.5
Good
1,858 reviews
Finnair
7.6
Good
1,332 reviews
Check prices

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Iberia
7.0
Good
2,966 reviews
Finnair
7.6
Good
1,332 reviews
Check prices

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Lufthansa
6.8
Okay
7,443 reviews
Finnair
7.6
Good
1,332 reviews
Check prices

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,414 reviews
Finnair
7.6
Good
1,332 reviews
Check prices

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London Heathrow Airport to Buenos Aires?

    A quick flight from London Heathrow Airport to Buenos Aires can take about 23h 55m. United Airlines provides one of the quickest options available for as low as £897. London Heathrow Airport and Buenos Aires are separated by a distance of 6896 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Buenos Aires round-trip?

    Our cheapest airline available from London Heathrow Airport to Buenos Aires is Air France. Our recent data shows that you can find tickets from as low as £445 on this airline. Additional options worth looking into are Air Canada and Avianca, starting at £642 and £704 round-trip. Air France is 54% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest flights from London Heathrow Airport to Buenos Aires?

    Looking at all options, your cheapest flight can be booked for £1,295. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £702 on average, our data indicates £1,970 when flying from London Heathrow Airport to Buenos Aires.

  • Can I find deals for flights from Heathrow to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Heathrow to Buenos Aires flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Buenos Aires.

  • Can I find deals for business class flights from Heathrow to Buenos Aires?

    Yes. Cheapflights offers flight deals from Heathrow to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Buenos Aires (average of £1,012). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,250). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 8 airlines flying from Heathrow to Buenos Aires

Discover the top 8 airlines that operate flights from Heathrow to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 2 אוקטובר 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£445Average£1,127FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air CanadaCheapest£642Average£683FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
AviancaCheapest£704Average£773FlexibilityNo cancel feeOn-time71%
Search Avianca flights
IberiaCheapest£710Average£982FlexibilityNo cancel feeOn-time77%
Search Iberia flights
FinnairCheapest£735Average£924FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£797Average£1,052FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£818Average£1,198FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
LATAM AirlinesCheapest£868Average£1,100FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Buenos Aires?

When you search for this flight from Heathrow to Buenos Aires, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Buenos Aires?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Buenos Aires.

Can Cheapflights find flights from Heathrow to Buenos Aires with no change fees?

Yes, we can. To see specific flights from Heathrow to Buenos Aires with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Heathrow to Buenos Aires become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Buenos Aires from Heathrow today and book when prices fit your budget.

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