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Cheap flights from London Heathrow Airport to Buenos Aires from $852

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 7/6. 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

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Find the cheapest flights from London Heathrow Airport to Buenos Aires

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
18:40 - 10:50
LHR
-
EZE
20h 10m
2 stops
Multiple Airlines Logo
16:35 - 22:10
EZE
-
LHR
25h 35m
1 stop
$1,626Multiple Airlines
Tue, 8 Sep - Thu, 1 Oct
Lufthansa Logo
07:30 - 06:25
LHR
-
EZE
26h 55m
1 stop
Lufthansa Logo
16:35 - 12:40
EZE
-
LHR
16h 05m
1 stop
$1,630Lufthansa
Sun, 14 Jun - Wed, 17 Jun
Lufthansa Logo
11:30 - 06:25
LHR
-
EZE
22h 55m
1 stop
Lufthansa Logo
16:35 - 14:40
EZE
-
LHR
18h 05m
1 stop
$1,637Lufthansa
Fri, 3 Jul - Mon, 13 Jul
Lufthansa Logo
06:30 - 06:25
LHR
-
EZE
27h 55m
1 stop
Lufthansa Logo
16:35 - 16:40
EZE
-
LHR
20h 05m
1 stop
$1,639Lufthansa
Mon, 6 Jul - Mon, 27 Jul
Lufthansa Logo
06:30 - 06:25
LHR
-
EZE
27h 55m
1 stop
Lufthansa Logo
16:35 - 14:40
EZE
-
LHR
18h 05m
1 stop
$1,665Lufthansa
Sat, 6 Jun - Mon, 15 Jun
Lufthansa Logo
08:30 - 06:25
LHR
-
EZE
25h 55m
1 stop
Lufthansa Logo
16:35 - 12:40
EZE
-
LHR
16h 05m
1 stop
$1,667Lufthansa
Sat, 13 Jun - Tue, 16 Jun
British Airways Logo
20:00 - 16:05
LHR
-
EZE
24h 05m
1 stop
British Airways Logo
21:40 - 18:15
EZE
-
LHR
16h 35m
1 stop
$1,685British Airways
Mon, 13 Jul - Sun, 26 Jul
LEVEL Logo
09:55 - 17:55
LHR
-
EZE
35h 00m
1 stop
LEVEL Logo
13:00 - 20:05
EZE
-
LHR
28h 05m
1 stop
$1,703LEVEL
Wed, 11 Nov - Fri, 27 Nov
Multiple Airlines Logo
18:40 - 10:50
LHR
-
EZE
20h 10m
2 stops
Multiple Airlines Logo
16:35 - 22:10
EZE
-
LHR
25h 35m
1 stop
$1,706Multiple Airlines
Tue, 8 Sep - Tue, 22 Sep
Lufthansa Logo
06:30 - 06:25
LHR
-
EZE
27h 55m
1 stop
Lufthansa Logo
16:35 - 17:40
EZE
-
LHR
21h 05m
1 stop
$1,714Lufthansa
Sat, 6 Jun - Sun, 14 Jun

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
13 July
LHR19:10London Heathrow
24h 55m
1 stop
EZE16:05Buenos Aires Ministro Pistarini
24 July
EZE13:00Buenos Aires Ministro Pistarini
15h 25m
1 stop
LHR08:25London Heathrow
$1,685
British Airways
2 June
LHR21:45London Heathrow
17h 00m
1 stop
EZE10:45Buenos Aires Ministro Pistarini
18 June
EZE12:25Buenos Aires Ministro Pistarini
15h 45m
1 stop
LHR08:10London Heathrow
$1,701
British Airways
13 July
LHR18:45London Heathrow
25h 20m
1 stop
EZE16:05Buenos Aires Ministro Pistarini
21 July
EZE17:50Buenos Aires Ministro Pistarini
21h 05m
1 stop
LHR18:55London Heathrow
$1,742

LEVEL flights from London Heathrow Airport to Buenos Aires

Our best LEVEL deals on London Heathrow Airport to Buenos Aires flight tickets
LEVEL
11 Nov
LHR09:55London Heathrow
35h 00m
1 stop
EZE17:55Buenos Aires Ministro Pistarini
27 Nov
EZE13:00Buenos Aires Ministro Pistarini
28h 05m
1 stop
LHR20:05London Heathrow
$1,703
LEVEL
7 Sept
LHR20:50London Heathrow
25h 10m
1 stop
EZE18:00Buenos Aires Ministro Pistarini
31 Oct
EZE19:45Buenos Aires Ministro Pistarini
34h 25m
1 stop
LHR09:10London Heathrow
$1,795

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 26 May 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

Tue 8/9

18:40-10:50

2 stops20h 10m

Buenos Aires Ministro Pistarini

Thu 1/10

16:35-22:10

1 stop25h 35m

$1,626

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 14/6

07:30-06:25

1 stop26h 55m

Buenos Aires Ministro Pistarini

Wed 17/6

16:35-12:40

1 stop16h 05m

$1,630

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 3/7

11:30-06:25

1 stop22h 55m

Buenos Aires Ministro Pistarini

Mon 13/7

16:35-14:40

1 stop18h 05m

$1,637

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 6/7

06:30-06:25

1 stop27h 55m

Buenos Aires Ministro Pistarini

Mon 27/7

16:35-16:40

1 stop20h 05m

$1,639

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 6/6

06:30-06:25

1 stop27h 55m

Buenos Aires Ministro Pistarini

Mon 15/6

16:35-14:40

1 stop18h 05m

$1,665

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 13/6

08:30-06:25

1 stop25h 55m

Buenos Aires Ministro Pistarini

Tue 16/6

16:35-12:40

1 stop16h 05m

$1,667
Fastest return journey

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 13/7

20:00-16:05

1 stop24h 05m

Buenos Aires Ministro Pistarini

Sun 26/7

21:40-18:15

1 stop16h 35m

$1,685

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 11/11

09:55-17:55

1 stop35h 00m

Buenos Aires Ministro Pistarini

Fri 27/11

13:00-20:05

1 stop28h 05m

$1,703

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 8/9

18:40-10:50

2 stops20h 10m

Buenos Aires Ministro Pistarini

Tue 22/9

16:35-22:10

1 stop25h 35m

$1,706

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 6/6

06:30-06:25

1 stop27h 55m

Buenos Aires Ministro Pistarini

Sun 14/6

16:35-17:40

1 stop21h 05m

$1,714

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 March. Flight prices, which tend to average around $322, are often lower during this time because this is during the off-season. If you don’t want to visit Buenos Aires in March, then you should wait until April to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $732.

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 $1,938 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 $1,556 on momondo.

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

As of May 2026, prices for London Heathrow Airport to Buenos Aires flights are approximately 19% 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

17h 00m

Direct flights

Tue

Airports in Buenos Aires

2 airports
The fastest flight from London Heathrow Airport to Buenos Aires takes 17h 00m
Direct flights go from London Heathrow Airport to Buenos Aires on Tuesday. 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 17h 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

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