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Cheap flights from London Heathrow Airport to Buenos Aires from $1,048

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Buenos Aires departing on 27/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London Heathrow Airport to Buenos Aires

Cheap return flights

Enter your travel dates to find the best prices.
Avianca Logo
21:40 - 15:50
LHR
-
EZE
21h 10m
1 stop
Avianca Logo
07:30 - 14:35
EZE
-
LHR
28h 05m
1 stop
$1,687Avianca
Fri, 6 Nov - Tue, 24 Nov
British Airways Logo
20:00 - 16:05
LHR
-
EZE
24h 05m
1 stop
British Airways Logo
17:50 - 17:15
EZE
-
LHR
19h 25m
1 stop
$1,720British Airways
Fri, 25 Sep - Sun, 27 Sep
Avianca Logo
22:05 - 15:40
LHR
-
EZE
21h 35m
1 stop
Avianca Logo
07:10 - 15:35
EZE
-
LHR
28h 25m
1 stop
$1,721Avianca
Sun, 30 Aug - Sun, 6 Sep
British Airways Logo
19:10 - 16:05
LHR
-
EZE
24h 55m
1 stop
British Airways Logo
17:50 - 14:55
EZE
-
LHR
17h 05m
1 stop
$1,724British Airways
Tue, 1 Sep - Thu, 10 Sep
American Airlines Logo
16:25 - 07:15
LHR
-
EZE
42h 50m
2 stops
American Airlines Logo
22:15 - 09:00
EZE
-
LHR
30h 45m
1 stop
$1,736American Airlines
Sun, 27 Sep - Sat, 3 Oct
American Airlines Logo
19:25 - 08:30
LHR
-
EZE
41h 05m
2 stops
American Airlines Logo
22:15 - 09:00
EZE
-
LHR
30h 45m
1 stop
$1,737American Airlines
Sun, 27 Sep - Fri, 2 Oct
American Airlines Logo
16:25 - 07:15
LHR
-
EZE
42h 50m
2 stops
American Airlines Logo
22:15 - 09:00
EZE
-
LHR
30h 45m
1 stop
$1,740American Airlines
Mon, 28 Sep - Fri, 2 Oct
TAP AIR PORTUGAL Logo
06:00 - 18:45
LHR
-
EZE
39h 45m
2 stops
TAP AIR PORTUGAL Logo
19:35 - 17:30
EZE
-
LHR
42h 55m
2 stops
$1,756TAP AIR PORTUGAL
Fri, 6 Nov - Sat, 21 Nov
TAP AIR PORTUGAL Logo
06:00 - 18:45
LHR
-
EZE
39h 45m
2 stops
TAP AIR PORTUGAL Logo
19:35 - 17:30
EZE
-
LHR
42h 55m
2 stops
$1,757TAP AIR PORTUGAL
Fri, 6 Nov - Sat, 21 Nov
TAP AIR PORTUGAL Logo
06:00 - 18:45
LHR
-
EZE
39h 45m
2 stops
TAP AIR PORTUGAL Logo
19:35 - 17:30
EZE
-
LHR
42h 55m
2 stops
$1,760TAP AIR PORTUGAL
Fri, 6 Nov - Sat, 21 Nov

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Avianca flights from London Heathrow Airport to Buenos Aires

Our best Avianca deals on London Heathrow Airport to Buenos Aires flight tickets
Avianca
6 Nov
LHR21:40London Heathrow
35h 10m
1 stop
EZE05:50Buenos Aires Ministro Pistarini
25 Nov
EZE16:55Buenos Aires Ministro Pistarini
18h 40m
1 stop
LHR14:35London Heathrow
$1,687
Avianca
30 Aug
LHR22:05London Heathrow
21h 35m
1 stop
EZE15:40Buenos Aires Ministro Pistarini
6 Sept
EZE07:10Buenos Aires Ministro Pistarini
28h 25m
1 stop
LHR15:35London Heathrow
$1,721
Avianca
28 Oct
LHR21:40London Heathrow
21h 10m
1 stop
EZE15:50Buenos Aires Ministro Pistarini
30 Nov
EZE07:30Buenos Aires Ministro Pistarini
28h 05m
1 stop
LHR14:35London Heathrow
$1,861

British Airways flights from London Heathrow Airport to Buenos Aires

Our best British Airways deals on London Heathrow Airport to Buenos Aires flight tickets
British Airways
25 Sept
LHR20:00London Heathrow
24h 05m
1 stop
EZE16:05Buenos Aires Ministro Pistarini
27 Sept
EZE17:50Buenos Aires Ministro Pistarini
19h 25m
1 stop
LHR17:15London Heathrow
$1,720
British Airways
1 Sept
LHR19:10London Heathrow
24h 55m
1 stop
EZE16:05Buenos Aires Ministro Pistarini
10 Sept
EZE17:50Buenos Aires Ministro Pistarini
17h 05m
1 stop
LHR14:55London Heathrow
$1,724
British Airways
5 Jan
LHR18:45London Heathrow
17h 00m
1 stop
EZE08:45Buenos Aires Ministro Pistarini
8 Feb
EZE19:20Buenos Aires Ministro Pistarini
18h 55m
1 stop
LHR17:15London Heathrow
$1,769

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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, momondo users made 78,305 searches. Data last updated 16 July 2026.
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 - EZE

LHREZE

London Heathrow

Fri 6/11

21:40-15:50

1 stop21h 10m

Buenos Aires Ministro Pistarini

Tue 24/11

07:30-14:35

1 stop28h 05m

$1,687

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 25/9

20:00-16:05

1 stop24h 05m

Buenos Aires Ministro Pistarini

Sun 27/9

17:50-17:15

1 stop19h 25m

$1,720

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 30/8

22:05-15:40

1 stop21h 35m

Buenos Aires Ministro Pistarini

Sun 6/9

07:10-15:35

1 stop28h 25m

$1,721
Fastest return journey

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 1/9

19:10-16:05

1 stop24h 55m

Buenos Aires Ministro Pistarini

Thu 10/9

17:50-14:55

1 stop17h 05m

$1,724

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 27/9

16:25-07:15

2 stops42h 50m

Buenos Aires Ministro Pistarini

Sat 3/10

22:15-09:00

1 stop30h 45m

$1,736

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 27/9

19:25-08:30

2 stops41h 05m

Buenos Aires Ministro Pistarini

Fri 2/10

22:15-09:00

1 stop30h 45m

$1,737

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 28/9

16:25-07:15

2 stops42h 50m

Buenos Aires Ministro Pistarini

Fri 2/10

22:15-09:00

1 stop30h 45m

$1,740

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 6/11

06:00-18:45

2 stops39h 45m

Buenos Aires Ministro Pistarini

Sat 21/11

19:35-17:30

2 stops42h 55m

$1,756

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 6/11

06:00-18:45

2 stops39h 45m

Buenos Aires Ministro Pistarini

Sat 21/11

19:35-17:30

2 stops42h 55m

$1,757

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 6/11

06:00-18:45

2 stops39h 45m

Buenos Aires Ministro Pistarini

Sat 21/11

19:35-17:30

2 stops42h 55m

$1,760

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buenos Aires from

How to get the cheapest flight ticket from London Heathrow Airport to Buenos Aires

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Heathrow Airport and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from London Heathrow Airport is in July. Flight prices, which tend to average around $226, are often lower during this time because this is during the off-season. If you don’t want to visit Buenos Aires in July, then you should wait until March to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $330.

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

You are more likely to see cheaper flights to Buenos Aires from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $2,002 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from London Heathrow Airport for as low as $1,537 on momondo.

How have London Heathrow Airport to Buenos Aires flight prices changed over time?

As of July 2026, prices for London Heathrow Airport to Buenos Aires flights are approximately 9% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Buenos Aires (LHR to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Buenos Aires

Fastest flight time

19h 45m

Direct flights

None
The fastest flight from London Heathrow Airport to Buenos Aires takes 19h 45m
There are no direct flights from London Heathrow Airport to Buenos Aires. There are no popular flight routes from London Heathrow Airport to Buenos Aires.
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Buenos Aires

  • How far is London Heathrow to Buenos Aires by plane?

    London Heathrow and Buenos Aires are 11101.7 km apart from one another. Typically, this will take 19h 45m by plane in normal conditions.

  • When did momondo last update prices for flights from London Heathrow Airport to Buenos Aires?

    Prices for flights from London Heathrow Airport to Buenos Aires are updated daily.

  • How old do you have to be to fly from London Heathrow Airport to Buenos Aires?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The travel and health documents required for your trip to Buenos Aires can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Buenos Aires. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from London Heathrow Airport to Buenos Aires?

Why use momondo?

Why should I use momondo to find a flight deal from London to Buenos Aires?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Buenos Aires for you.

Can I find flights from London to Buenos Aires with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Buenos Aires from London with this policy.

How can momondo help me find flights from London to Buenos Aires?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Buenos Aires.

I’m not ready to book a flight from London to Buenos Aires right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Buenos Aires flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 27.4 km from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport