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Cheap flights from London Heathrow Airport to Buenos Aires from $1,071

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.
British Airways Logo
19:05 - 17:25LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
25h 20m1 stop Madrid Barajas
British Airways Logo
15:10 - 08:30EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
13h 20mdirect
$1,856British Airways
Sun, 21 Mar - Thu, 8 Apr
United Airlines Logo
06:35 - 09:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
29h 45m2 stops Munich Franz Josef Strauss Houston George Bush Intcntl
United Airlines Logo
23:55 - 07:55EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
29h 00m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$1,857United Airlines
Sat, 20 Feb - Wed, 24 Feb
British Airways Logo
18:45 - 16:15LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
25h 30m1 stop Madrid Barajas
British Airways Logo
15:10 - 08:30EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
13h 20mdirect
$1,863British Airways
Sun, 4 Apr - Sat, 24 Apr
United Airlines Logo
07:25 - 08:00LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
28h 35m2 stops Munich Franz Josef Strauss Houston George Bush Intcntl
United Airlines Logo
21:00 - 11:35EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
34h 35m1 stop Houston George Bush Intcntl
$1,864United Airlines
Tue, 6 Apr - Thu, 22 Apr
United Airlines Logo
12:05 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
22h 15m1 stop Houston George Bush Intcntl
United Airlines Logo
22:05 - 06:20EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
29h 15m2 stops Houston George Bush Intcntl Newark
$1,870United Airlines
Sat, 5 Dec - Tue, 8 Dec
British Airways Logo
08:25 - 17:25LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
36h 00m1 stop Madrid Barajas
British Airways Logo
15:10 - 08:30EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
13h 20mdirect
$1,872British Airways
Tue, 23 Mar - Thu, 8 Apr
United Airlines Logo
10:00 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
24h 20m1 stop Houston George Bush Intcntl
United Airlines Logo
23:55 - 07:40EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 45m1 stop Houston George Bush Intcntl
$1,876United Airlines
Fri, 20 Nov - Thu, 3 Dec
United Airlines Logo
10:00 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
24h 20m1 stop Houston George Bush Intcntl
United Airlines Logo
23:55 - 07:40EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 45m1 stop Houston George Bush Intcntl
$1,877United Airlines
Fri, 20 Nov - Thu, 3 Dec
United Airlines Logo
18:00 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
40h 20m2 stops Newark Houston George Bush Intcntl
United Airlines Logo
23:55 - 08:25EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
29h 30m2 stops Houston George Bush Intcntl Newark
$1,883United Airlines
Tue, 23 Feb - Mon, 1 Mar
Avianca Logo
21:35 - 00:30LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
29h 55m1 stop Bogotá El Dorado
Avianca Logo
16:50 - 14:35EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
18h 45m1 stop Bogotá El Dorado
$1,885Avianca
Sun, 28 Feb - Sat, 6 Mar

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United Airlines flights from London Heathrow Airport to Buenos Aires

Our best United Airlines deals on London Heathrow Airport to Buenos Aires flight tickets
United Airlines
20 Feb
LHR06:35London Heathrow
29h 45m
2 stops
EZE09:20Buenos Aires Ministro Pistarini
24 Feb
EZE23:55Buenos Aires Ministro Pistarini
29h 00m
2 stops
LHR07:55London Heathrow
$1,857
United Airlines
6 Apr
LHR07:25London Heathrow
28h 35m
2 stops
EZE08:00Buenos Aires Ministro Pistarini
22 Apr
EZE21:00Buenos Aires Ministro Pistarini
34h 35m
1 stop
LHR11:35London Heathrow
$1,864
United Airlines
5 Dec
LHR12:05London Heathrow
22h 15m
1 stop
EZE07:20Buenos Aires Ministro Pistarini
8 Dec
EZE22:05Buenos Aires Ministro Pistarini
29h 15m
2 stops
LHR06:20London Heathrow
$1,870

KLM flights from London Heathrow Airport to Buenos Aires

Our best KLM deals on London Heathrow Airport to Buenos Aires flight tickets
KLM
17 Nov
LHR20:25London Heathrow
26h 55m
2 stops
EZE20:20Buenos Aires Ministro Pistarini
21 Nov
EZE17:00Buenos Aires Ministro Pistarini
16h 05m
1 stop
LHR12:05London Heathrow
$1,857
KLM
14 Nov
LHR11:15London Heathrow
23h 30m
1 stop
EZE07:45Buenos Aires Ministro Pistarini
19 Nov
EZE17:00Buenos Aires Ministro Pistarini
21h 00m
1 stop
LHR17:00London Heathrow
$2,403
KLM
13 Nov
LHR17:05London Heathrow
17h 40m
1 stop
EZE07:45Buenos Aires Ministro Pistarini
19 Nov
EZE17:00Buenos Aires Ministro Pistarini
20h 05m
1 stop
LHR16:05London Heathrow
$2,563

momondo Fare Finder

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

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Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 21/3

19:05-17:25

1 stop25h 20m

Buenos Aires Ministro Pistarini

Thu 8/4

15:10-08:30

Nonstop13h 20m

$1,856

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 20/2

06:35-09:20

2 stops29h 45m

Buenos Aires Ministro Pistarini

Wed 24/2

23:55-07:55

2 stops29h 00m

$1,857

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 4/4

18:45-16:15

1 stop25h 30m

Buenos Aires Ministro Pistarini

Sat 24/4

15:10-08:30

Nonstop13h 20m

$1,863

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 6/4

07:25-08:00

2 stops28h 35m

Buenos Aires Ministro Pistarini

Thu 22/4

21:00-11:35

1 stop34h 35m

$1,864

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 5/12

12:05-07:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Tue 8/12

22:05-06:20

2 stops29h 15m

$1,870

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 23/3

08:25-17:25

1 stop36h 00m

Buenos Aires Ministro Pistarini

Thu 8/4

15:10-08:30

Nonstop13h 20m

$1,872

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 20/11

10:00-07:20

1 stop24h 20m

Buenos Aires Ministro Pistarini

Thu 3/12

23:55-07:40

1 stop28h 45m

$1,876

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 20/11

10:00-07:20

1 stop24h 20m

Buenos Aires Ministro Pistarini

Thu 3/12

23:55-07:40

1 stop28h 45m

$1,877

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 23/2

18:00-07:20

2 stops40h 20m

Buenos Aires Ministro Pistarini

Mon 1/3

23:55-08:25

2 stops29h 30m

$1,883

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 28/2

21:35-00:30

1 stop29h 55m

Buenos Aires Ministro Pistarini

Sat 6/3

16:50-14:35

1 stop18h 45m

$1,885

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?

Prices are currently typical for flights on this route.

Typical prices usually range from $1,799 to $2,248.
The lowest price recently found on this route was $1,856.

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from London Heathrow Airport is in May. Flight prices, which tend to average around $1,628, are often lower during this time because this is during the off-season. If you don’t want to visit Buenos Aires in May, then you should wait until June to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $1,799.

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 $2,032 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 $1,844 on momondo.

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

As of November 2026, prices for London Heathrow Airport to Buenos Aires flights are approximately 16% 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

Best price found

$1,071

Fastest flight time

27h 00m

Direct flights

Tue, Thu, Sat and Sun

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from London Heathrow Airport in the past 72 hours is $1,071. The best return flight deal from London Heathrow Airport to Buenos Aires found on momondo in the last 72 hours is $1,856.
The fastest flight from London Heathrow Airport to Buenos Aires takes 27h 00m
Direct flights go from London Heathrow Airport to Buenos Aires on Tuesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights..
There are 2 airports in Buenos Aires. From London Heathrow Airport there are direct flights to Buenos Aires Ministro Pistarini (EZE).
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 27h 00m 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

Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport