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 17h 45m. United Airlines provides one of the quickest options available for as low as £977. London Heathrow Airport and Buenos Aires are separated by a distance of 6915 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 Avianca. Our recent data shows that you can find tickets from as low as £697 on this airline. Additional options worth looking into are Iberia and LATAM Airlines, starting at £837 and £858 round-trip. Avianca is 33% 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?

£415 is the cheapest one-way deal found within the past few days, from Avianca. You may also be able to find cheap deals on LATAM Airlines and Iberia, with prices starting from £541 and £704, respectively.

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.

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).

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

Looking at all options, your cheapest flight can be booked for £844. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £569 on average, our data indicates £1,086 when flying from London Heathrow Airport to Buenos Aires.

What are the most popular airlines that fly from London Heathrow Airport to Buenos Aires?

Before booking your flight from London Heathrow Airport to Buenos Aires check out the most popular airlines for this route: British Airways, Avianca or Iberia.

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.

£536+ Cheap Flights from London Heathrow Airport to Buenos Aires

Cheapflights Tip: The best prices from London Heathrow to Buenos Aires are usually found in May or April, booked 56 days in advance, depart on a Wednesday or Sunday and return on a Monday

Cheap flight deals from Heathrow to Buenos Aires

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 9 October 2026.

Mon 23/1119:30 -

2 stops43h 20m

Mon 7/1202:05 -

2 stops40h 35m

Deal found 5/10£964

Fri 27/1118:45 -

2 stops42h 55m

Sun 6/1202:05 -

1 stop33h 00m

Deal found 4/10£966

Mon 23/1118:30 -

2 stops28h 30m

Mon 30/1109:25 -

2 stops28h 50m

Deal found 4/10£967

Mon 23/1120:15 -

1 stop17h 15m

Mon 30/1115:50 -

2 stops22h 25m

Deal found 4/10£970

Sat 14/1121:35 -

1 stop29h 55m

Mon 30/1107:25 -

1 stop28h 10m

Deal found 5/10£970

Fri 6/1108:15 -

2 stops29h 15m

Sat 14/1121:45 -

1 stop37h 20m

Deal found 6/10£971

Fri 13/1112:05 -

1 stop22h 15m

Fri 27/1122:05 -

1 stop30h 35m

Deal found 5/10£971

Mon 16/1120:15 -

1 stop16h 25m

Tue 8/1210:35 -

2 stops27h 40m

Deal found 8/10£972

Sat 14/1112:05 -

1 stop22h 15m

Mon 30/1123:55 -

1 stop28h 45m

Deal found 7/10£972

Sun 22/1120:15 -

1 stop17h 15m

Sun 29/1110:35 -

1 stop24h 30m

Deal found 8/10£972

Sat 14/1120:15 -

1 stop17h 15m

Tue 24/1118:20 -

1 stop16h 45m

Deal found 6/10£973

Wed 11/1120:15 -

1 stop22h 45m

Tue 24/1117:00 -

1 stop18h 05m

Deal found 6/10£973

Best flights from Heathrow to Buenos Aires
Discover carefully curated flight deals from Heathrow to Buenos Aires that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Thu 18/213:35 -

2 stops46h 45m

Sun 28/223:55 -

1 stop28h 45m

Deal found 8/10£973

Sun 21/306:10 -

1 stop17h 45m

Wed 7/415:10 -

Nonstop13h 20m

Deal found 8/10£977

Mon 9/1108:15 -

2 stops31h 25m

Tue 24/1113:35 -

2 stops29h 00m

Deal found 8/10£1,016

Sat 28/1114:25 -

3 stops28h 35m

Mon 7/1202:05 -

2 stops31h 55m

Deal found 8/10£1,179

Wed 16/1216:30 -

2 stops32h 55m

Sun 20/1223:55 -

2 stops36h 00m

Deal found 4/10£1,321

Tue 29/1216:30 -

2 stops32h 55m

Sat 16/114:45 -

2 stops28h 45m

Deal found 4/10£1,455

Sat 14/1112:05 -

1 stop22h 15m

Fri 4/1223:55 -

2 stops27h 25m

Deal found 4/10£1,000

Thu 18/312:25 -

2 stops31h 55m

Mon 12/410:30 -

2 stops31h 30m

Deal found 8/10£1,025

Tue 16/306:05 -

1 stop17h 55m

Thu 8/415:10 -

Nonstop13h 20m

Deal found 8/10£1,058

Mon 23/1108:15 -

2 stops44h 25m

Wed 25/1113:35 -

2 stops26h 20m

Deal found 4/10£1,041

Tue 26/112:05 -

1 stop22h 15m

Tue 2/223:55 -

2 stops30h 15m

Deal found 6/10£1,078

Thu 19/1119:30 -

3 stops43h 20m

Wed 2/1202:05 -

2 stops31h 55m

Deal found 5/10£1,288

Sat 20/308:15 -

2 stops20h 25m

Tue 6/403:00 -

2 stops35h 50m

Deal found 8/10£1,077

Wed 16/1218:45 -

1 stop25h 40m

Sun 20/1222:45 -

1 stop17h 05m

Deal found 5/10£1,271

Tue 16/306:00 -

3 stops30h 20m

Tue 13/413:35 -

2 stops24h 10m

Deal found 8/10£1,090

Sat 28/1118:40 -

2 stops20h 20m

Tue 8/1212:55 -

3 stops29h 30m

Deal found 8/10£1,323

Sun 13/1212:25 -

2 stops27h 15m

Tue 23/213:35 -

2 stops29h 00m

Deal found 5/10£1,102

Mon 9/1113:35 -

2 stops68h 45m

Mon 30/1123:55 -

1 stop28h 45m

Deal found 5/10£1,347

Sat 30/118:30 -

2 stops34h 10m

Thu 11/209:00 -

2 stops30h 55m

Deal found 8/10£1,109

Sun 28/214:25 -

3 stops24h 35m

Wed 31/312:55 -

2 stops20h 05m

Deal found 5/10£1,477

Fri 25/1218:40 -

2 stops20h 20m

Thu 28/112:55 -

2 stops21h 05m

Deal found 8/10£1,540

Mon 16/1118:30 -

3 stops44h 20m

Fri 20/1112:45 -

2 stops25h 45m

Deal found 6/10£1,161

Sat 5/1218:30 -

2 stops34h 30m

Sat 12/1203:15 -

2 stops39h 20m

Deal found 6/10£1,243

Sun 21/312:25 -

2 stops27h 15m

Sat 10/403:00 -

2 stops35h 50m

Deal found 8/10£1,538

Find flight deals from Heathrow to Buenos Aires

Round-trip from	£964
One-way from	£536
Popular in	December
Cheapest in	May
Average price	£1,044
Good round-trip deal	£908 or less

LATAM Airlines
23/2-5/3
4 total stops
51h 40m total
London to Buenos Aires

Search Deals

4/11-31/12
3 total stops
44h 30m total
London to Buenos Aires

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£53 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£20 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a round-trip flight from London Heathrow to Buenos Aires (BUE).

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 27/11

06:35-07:20

2 stops27h 45m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£548

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 21/11

16:40-07:20

2 stops41h 40m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£556

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 5/12

11:35-07:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£557

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 6/12

12:05-07:20

2 stops46h 15m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£557

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 17/11

09:10-09:20

2 stops27h 10m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£558

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Wed 9/12

08:00-07:20

2 stops26h 20m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£558

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 15/11

12:05-09:20

2 stops48h 15m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£558

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 14/2

16:20-09:20

2 stops44h 00m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£561

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 19/2

12:05-09:20

1 stop24h 15m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£561

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Wed 7/4

20:05-09:40

2 stops41h 35m

Buenos Aires Jorge Newbery

Wed 31/12

00:00-04:00

Nonstop0h 00m

£702

Flights are sorted by cheapest return flights first.

Deals found on 7/10

Showing 1-10 of 43 resultsSorted by cheapest first

...

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.

LHR-BUE

LHR-EZE

LHR-AEP

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

LHR-BUE

LHR-EZE

LHR-AEP

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 £865). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,327). 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?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Buenos Aires as you normally would.

Weekly flight availability from London Heathrow Airport to Buenos Aires

The most flights from LHR to BUE are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

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

Airfare is typical for this route at the moment.

London Heathrow Airport to Buenos Aires flights typically cost between £960 and £1,137 in February.
The cheapest return price found within the last 5 days was £964 on LATAM Airlines (23 Feb–5 Mar).

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

Bogotá (BOG) – chosen by Cheapflights users on 31% 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?

Houston (IAH) is the most affordable one-stop option, with an average return flight price of £794.

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

Flights via Madrid (MAD) have the shortest average one-way travel time for one-stop routes: 16h 25m.

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

Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average stopover time of 1h 11m.

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

Booking 39 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.

Reviews of airlines servicing Buenos Aires

Read through reviews of airlines operating flights from London Heathrow Airport to Buenos Aires, such as LATAM Airlines,Iberia, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

LATAM Airlines

7.4

Good

1,976 reviews

Check prices

Reviews

1 / 20

6.0

Good

Juan,Apr 2026

BOG - CLO

Very old aircraft and it was very dirty in the seats and floor

LATAM Airlines

7.4

Good

1,976 reviews

LATAM Airlines

7.4

Good

1,976 reviews

Check prices

Reviews

1 / 20

6.0

Good

Juan,Apr 2026

BOG - CLO

Very old aircraft and it was very dirty in the seats and floor

Iberia

7.0

Good

3,253 reviews

LATAM Airlines

7.4

Good

1,976 reviews

Check prices

Reviews

1 / 20

6.0

Good

Juan,Apr 2026

BOG - CLO

Very old aircraft and it was very dirty in the seats and floor

Lufthansa

6.8

Okay

8,270 reviews

LATAM Airlines

7.4

Good

1,976 reviews

Check prices

Reviews

1 / 20

6.0

Good

Juan,Apr 2026

BOG - CLO

Very old aircraft and it was very dirty in the seats and floor

British Airways

6.7

Okay

8,255 reviews

LATAM Airlines

7.4

Good

1,976 reviews

Check prices

Reviews

1 / 20

6.0

Good

Juan,Apr 2026

BOG - CLO

Very old aircraft and it was very dirty in the seats and floor

Avianca

6.5

Okay

2,558 reviews

LATAM Airlines

7.4

Good

1,976 reviews

Check prices

Reviews

1 / 20

6.0

Good

Juan,Apr 2026

BOG - CLO

Very old aircraft and it was very dirty in the seats and floor

Related info for your journey

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 17h 45m. United Airlines provides one of the quickest options available for as low as £977. London Heathrow Airport and Buenos Aires are separated by a distance of 6915 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 Avianca. Our recent data shows that you can find tickets from as low as £697 on this airline. Additional options worth looking into are Iberia and LATAM Airlines, starting at £837 and £858 round-trip. Avianca is 33% 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?
£415 is the cheapest one-way deal found within the past few days, from Avianca. You may also be able to find cheap deals on LATAM Airlines and Iberia, with prices starting from £541 and £704, respectively.
What are the cheapest flights from London Heathrow Airport to Buenos Aires?
Looking at all options, your cheapest flight can be booked for £844. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £569 on average, our data indicates £1,086 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 £865). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,327). 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

Alternative routes

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Complete your trip

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Flights by cabin class

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Alternative routes for Heathrow to Buenos Aires

Heathrow to Ministro Pistarini flights

Heathrow to Jorge Newbery flights

Gatwick to Ministro Pistarini flights

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Luton to Ministro Pistarini flights

London City to Jorge Newbery flights

London City to Mendoza flights

Heathrow to Mendoza flights

Gatwick to Cordoba flights

Heathrow to Cordoba flights

Stansted to Mendoza flights

Gatwick to San Carlos de Bariloche flights

Gatwick to Ushuaia flights

Heathrow to San Carlos de Bariloche flights

London City to Cordoba flights

Heathrow to Ushuaia flights

Heathrow to Rosario flights

Gatwick to Rosario flights

Heathrow to Salta flights

Top 7 airlines flying from Heathrow to Buenos Aires

Airline	Cheapest	Average	Flexibility	On-time
Avianca	Cheapest£697	Average£806	FlexibilityNo cancel fee	On-time71%	Search Avianca flights
Iberia	Cheapest£837	Average£1,035	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
LATAM Airlines	Cheapest£858	Average£1,030	FlexibilityNo cancel fee	On-time81%	Search LATAM Airlines flights
American Airlines	Cheapest£881	Average£910	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
British Airways	Cheapest£909	Average£1,131	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£931	Average£1,121	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Delta	Cheapest£938	Average£1,004	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

Fly with Cheapflights

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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Cheap flights from London Heathrow Airport to Buenos Aires from £536

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Buenos Aires

Cheapest flights from Heathrow to Buenos AiresExplore 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 9 October 2026.

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 9 October 2026.

Best flights from Heathrow to Buenos AiresDiscover carefully curated flight deals from Heathrow to Buenos Aires that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Discover carefully curated flight deals from Heathrow to Buenos Aires that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Direct flights from Heathrow to Buenos AiresExplore direct flight options from Heathrow to Buenos Aires based on user searches, and compare prices and availability for your desired travel dates. Data last updated 9 October 2026.

Explore direct flight options from Heathrow to Buenos Aires based on user searches, and compare prices and availability for your desired travel dates. Data last updated 9 October 2026.

Last-minute flights from Heathrow to Buenos AiresDiscover last-minute flight deals from Heathrow to Buenos Aires. Data last updated 9 October 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Buenos Aires. Data last updated 9 October 2026 and is based on user searches.

One-way flights from Heathrow to Buenos AiresSearch for one-way flight options from Heathrow to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

Search for one-way flight options from Heathrow to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

Find flight deals from Heathrow to Buenos Aires

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Buenos Aires that are best for you.

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.

Cheapflights Insights

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

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 9 October 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Buenos Aires as you normally would.

Weekly flight availability from London Heathrow Airport to Buenos Aires

The most flights from LHR to BUE are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

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

Airfare is typical for this route at the moment.

London Heathrow Airport to Buenos Aires flights typically cost between £960 and £1,137 in February.The cheapest return price found within the last 5 days was £964 on LATAM Airlines (23 Feb–5 Mar).

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.

Bogotá (BOG) – chosen by Cheapflights users on 31% 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.

Houston (IAH) is the most affordable one-stop option, with an average return flight price of £794.

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 Madrid (MAD) have the shortest average one-way travel time for one-stop routes: 16h 25m.

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 Frankfurt am Main (FRA) offer the fastest connection on this route, with an average stopover time of 1h 11m.

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

Booking 39 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.

Reviews of airlines servicing Buenos Aires

Read through reviews of airlines operating flights from London Heathrow Airport to Buenos Aires, such as LATAM Airlines,Iberia, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

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

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

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

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

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

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Alternative routes for Heathrow to Buenos Aires

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Other flights to Buenos Aires

Explore flights to Buenos Aires departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 9 October 2026.

Complete your trip

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Direct flights to Argentina

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Heathrow and Buenos Aires flights

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Other flights from Heathrow

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Top 7 airlines flying from Heathrow to Buenos Aires

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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 9 October 2026.

Best flights from Heathrow to Buenos Aires
Discover carefully curated flight deals from Heathrow to Buenos Aires that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Direct flights from Heathrow to Buenos Aires
Explore direct flight options from Heathrow to Buenos Aires based on user searches, and compare prices and availability for your desired travel dates. Data last updated 9 October 2026.

Last-minute flights from Heathrow to Buenos Aires
Discover last-minute flight deals from Heathrow to Buenos Aires. Data last updated 9 October 2026 and is based on user searches.

One-way flights from Heathrow to Buenos Aires
Search for one-way flight options from Heathrow to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

London Heathrow Airport to Buenos Aires flights typically cost between £960 and £1,137 in February.
The cheapest return price found within the last 5 days was £964 on LATAM Airlines (23 Feb–5 Mar).