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Cheap flights from London Heathrow Airport to Buenos Aires from £444

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 31/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
26 févr. — 5 mars1
1 adult

The best prices from London Heathrow to Buenos Aires are usually found in March or April, booked 61 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

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 21 février 2025.

Round-trip from

£798

One-way from

£444

Popular in

December

Cheapest in

March

Average price

£899

Good round-trip deal

£1,019 or less

Good one-way deal

£699 or less
20/3-26/3
  • 20/3-26/3
  • 5 total stops
  • 58h 45m total
  • London to Buenos Aires
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31/3
  • 31/3
  • 2 total stops
  • 25h 30m total
  • London to Buenos Aires
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Highest demand for flights based on searches. 7% potential increase in price (£65 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£25 potential savings vs. average return price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from London Heathrow to Buenos Aires (BUE).
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Price to beat on a one-way flight from London Heathrow to Buenos Aires (BUE).
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Find flight deals from Heathrow to Buenos Aires

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 21 février 2025.

ven. 28/1118:45LHR - EZE
1 stop25h 40mMultiple Airlines
dim. 14/1219:10EZE - LHR
1 stop16h 45mMultiple Airlines
Deal found 21/2£794
jeu. 20/308:15LHR - AEP
3 stops26h 25mMultiple Airlines
mer. 26/300:05AEP - LHR
2 stops32h 20mMultiple Airlines
Deal found 20/2£798
mer. 5/1114:30LHR - EZE
3 stops51h 55mAir Canada
sam. 22/1117:00EZE - LHR
2 stops34h 30mAir Canada
Deal found 20/2£798
lun. 17/316:25LHR - EZE
1 stop21h 14mAmerican Airlines
jeu. 27/320:30EZE - LHR
2 stops22h 40mAmerican Airlines
Deal found 19/2£817
mar. 2/1218:45LHR - EZE
1 stop25h 40mIberia
mer. 21/122:45EZE - LHR
1 stop15h 30mIberia
Deal found 21/2£825
jeu. 30/1011:10LHR - EZE
1 stop30h 15mLufthansa
sam. 15/1117:00EZE - LHR
2 stops35h 10mLufthansa
Deal found 20/2£833
lun. 24/213:50LHR - EZE
1 stop23h 39mFinnair
lun. 10/321:30EZE - LHR
1 stop29h 50mFinnair
Deal found 20/2£838
sam. 1/1119:40LHR - AEP
2 stops39h 00mLATAM Airlines
dim. 30/1114:55AEP - LHR
1 stop20h 10mLATAM Airlines
Deal found 19/2£849
mar. 14/1018:45LHR - EZE
1 stop25h 35mBritish Airways
lun. 27/1022:45EZE - LHR
1 stop20h 25mBritish Airways
Deal found 20/2£863
mer. 26/1119:40LHR - EZE
2 stops26h 05mLATAM Airlines
ven. 5/1210:02EZE - LHR
3 stops25h 03mLATAM Airlines
Deal found 20/2£887
mer. 19/312:50LHR - EZE
1 stop22h 30mUnited Airlines
mer. 26/321:05EZE - LHR
2 stops54h 35mUnited Airlines
Deal found 21/2£895
mer. 7/515:50LHR - AEP
2 stops29h 30mLufthansa
mer. 21/513:40AEP - LHR
2 stops42h 10mLufthansa
Deal found 20/2£899

Find flights from Heathrow to Buenos Aires within your budget

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 21 février 2025.

Fly from

Heathrow

Fly to

Buenos Aires

Route

Depart

Return

Price

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

jeu. 20/3

08:15-07:40

3 stops26h 25m

Buenos Aires Jorge Newbery

mer. 26/3

00:05-11:25

2 stops32h 20m

£798

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

mar. 11/3

18:30-14:25

2 stops22h 55m

Buenos Aires Ministro Pistarini

sam. 22/3

16:00-18:55

2 stops23h 55m

£799

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

lun. 17/3

11:45-06:10

1 stop21h 25m

Buenos Aires Ministro Pistarini

lun. 24/3

23:59-06:50

2 stops27h 51m

£817

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

mer. 7/5

15:50-14:30

1 stop26h 40m

Buenos Aires Ministro Pistarini

mer. 21/5

16:35-11:50

1 stop39h 15m

£836

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

ven. 14/3

09:20-06:20

1 stop24h 00m

Buenos Aires Ministro Pistarini

jeu. 20/3

22:55-07:30

1 stop29h 35m

£841

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

ven. 25/4

16:00-14:30

1 stop26h 30m

Buenos Aires Ministro Pistarini

lun. 26/5

16:35-08:35

1 stop36h 00m

£866

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

lun. 17/3

20:15-09:40

1 stop16h 25m

Buenos Aires Jorge Newbery

mer. 2/4

14:55-15:05

1 stop20h 10m

£872

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

mer. 12/3

18:45-17:25

1 stop25h 40m

Buenos Aires Ministro Pistarini

mer. 26/3

13:35-08:35

1 stop16h 00m

£882

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

mar. 11/3

20:15-18:10

2 stops24h 55m

Buenos Aires Ministro Pistarini

mar. 25/3

07:20-14:05

1 stop27h 45m

£891

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

mer. 7/5

15:50-17:20

2 stops29h 30m

Buenos Aires Jorge Newbery

mer. 21/5

13:40-11:50

2 stops42h 10m

£899

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 33 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.

Travel insights for flights from Heathrow to Buenos Aires

Get recent, data-driven insights about flights from Heathrow to Buenos Aires including ideal travel times, pricing trends, and more.

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 14 February 2025.

Booking 61 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, June is the cheapest month in which you can book a flight from London Heathrow Airport to Buenos Aires (average of £988). 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 21 février 2025.

It’s typically best to fly out from London Heathrow Airport to Buenos Aires in the morning. Doing so could potentially save you 17% 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. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London Heathrow Airport to Buenos Aires

Explore weekly flight availability from Heathrow to Buenos Aires. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 21 février 2025.

The most flights from LHR to BUE are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Buenos Aires ranges from 50.0 - 100.0 inches per month. January is typically the wettest month, when rainfall can reach 100.0 mm. June is typically the driest time to visit Buenos Aires when rainfall is around 50.0 mm.

Temperature in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 11.0 C).

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 21 février 2025.
To help decide which airline to fly from London to Buenos Aires, see what other customers have to say about Delta, KLM and Finnair. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,213 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Delta
8.0
Very Good
8,213 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

KLM
7.8
Good
1,331 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

LATAM Airlines
7.5
Good
1,793 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

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.

  • 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 American Airlines. Our recent data shows that you can find tickets from as low as £817 on this airline. Additional options worth looking into are Air Canada and Lufthansa, starting at £836 and £866 round-trip. American Airlines is 14% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Buenos Aires one-way?

    £475 is the cheapest one-way deal found within the past few days, from Vueling. You may also be able to find cheap deals on Aeromexico and United Airlines, with prices starting from £551 and £565, respectively.

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

    Looking at all options, your cheapest flight can be booked for £505. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £782 on average our data indicates £1,301 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, June is the cheapest month in which you can book a flight from London Heathrow Airport to Buenos Aires (average of £988). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 9 airlines flying from Heathrow to Buenos Aires

Discover the top 9 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 21 février 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£475Average£709FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air CanadaCheapest£685Average£718FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Turkish AirlinesCheapest£697Average£713FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
LufthansaCheapest£734Average£1,040FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IberiaCheapest£739Average£932FlexibilityNo cancel feeOn-time77%
Search Iberia flights
FinnairCheapest£783Average£865FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£799Average£1,025FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£888Average£1,217FlexibilityNo cancel feeOn-time75%
Search KLM flights
LATAM AirlinesCheapest£921Average£1,256FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

Fly with Cheapflights

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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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