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Cheap flights from London Heathrow Airport to Buenos Aires from $928

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 18/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Turkish Airlines Logo
22:35 - 22:25LHR-EZE
50h 50m2 stops
Turkish Airlines Logo
23:55 - 21:00EZE-LHR
41h 05m2 stops
$1,650Turkish Airlines
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Mon, 2 Mar - Mon, 30 Mar
Turkish Airlines Logo
11:30 - 22:25LHR-EZE
37h 55m2 stops
Turkish Airlines Logo
23:55 - 14:10EZE-LHR
35h 15m2 stops
$1,653Turkish Airlines
Find Deal
Tue, 24 Feb - Tue, 10 Mar
Avianca Logo
21:40 - 05:50LHR-EZE
35h 10m1 stop
Avianca Logo
16:55 - 14:35EZE-LHR
18h 40m1 stop
$1,662Avianca
Find Deal
Mon, 23 Feb - Mon, 2 Mar
United Airlines Logo
12:05 - 09:20LHR-EZE
24h 15m1 stop
United Airlines Logo
22:05 - 05:55EZE-LHR
28h 50m2 stops
$1,694United Airlines
Find Deal
Sun, 8 Feb - Wed, 18 Feb
British Airways Logo
19:40 - 17:55LHR-EZE
25h 15m1 stop
British Airways Logo
21:40 - 17:15EZE-LHR
15h 35m1 stop
$1,711British Airways
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Tue, 3 Mar - Tue, 2 Jun
Lufthansa Logo
09:30 - 07:55LHR-EZE
25h 25m1 stop
Lufthansa Logo
17:45 - 12:50EZE-LHR
16h 05m1 stop
$1,725Lufthansa
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Mon, 1 Dec - Mon, 22 Dec
British Airways Logo
15:45 - 21:00LHR-EZE
32h 15m1 stop
British Airways Logo
21:40 - 17:15EZE-LHR
15h 35m1 stop
$1,728British Airways
Find Deal
Sat, 7 Mar - Tue, 2 Jun
Avianca Logo
21:40 - 15:50LHR-EZE
21h 10m1 stop
Avianca Logo
01:40 - 14:35EZE-LHR
33h 55m1 stop
$1,784Avianca
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Thu, 19 Feb - Wed, 25 Feb
United Airlines Logo
09:10 - 07:20LHR-EZE
25h 10m2 stops
United Airlines Logo
23:55 - 06:40EZE-LHR
27h 45m2 stops
$1,795United Airlines
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Tue, 3 Feb - Tue, 17 Feb
Lufthansa Logo
16:30 - 07:55LHR-EZE
18h 25m1 stop
Lufthansa Logo
16:40 - 16:40EZE-LHR
20h 00m1 stop
$1,817Lufthansa
Find Deal
Thu, 5 Mar - Wed, 3 Jun

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
8 Feb
LHR12:05London Heathrow
24h 15m
1 stop
EZE09:20Buenos Aires Ministro Pistarini
18 Feb
EZE22:05Buenos Aires Ministro Pistarini
28h 50m
2 stops
LHR05:55London Heathrow
$1,694
Find similar
United Airlines
3 Feb
LHR09:10London Heathrow
25h 10m
2 stops
EZE07:20Buenos Aires Ministro Pistarini
17 Feb
EZE23:55Buenos Aires Ministro Pistarini
27h 45m
2 stops
LHR06:40London Heathrow
$1,795
Find similar
United Airlines
26 Jan
LHR12:05London Heathrow
24h 15m
1 stop
EZE09:20Buenos Aires Ministro Pistarini
16 Feb
EZE23:55Buenos Aires Ministro Pistarini
28h 35m
1 stop
LHR07:30London Heathrow
$1,803
Find similar

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
3 Mar
LHR19:40London Heathrow
25h 15m
1 stop
EZE17:55Buenos Aires Ministro Pistarini
2 June
EZE21:40Buenos Aires Ministro Pistarini
15h 35m
1 stop
LHR17:15London Heathrow
$1,711
Find similar
British Airways
7 Mar
LHR15:45London Heathrow
32h 15m
1 stop
EZE21:00Buenos Aires Ministro Pistarini
2 June
EZE21:40Buenos Aires Ministro Pistarini
15h 35m
1 stop
LHR17:15London Heathrow
$1,728
Find similar
British Airways
24 Jan
LHR19:05London Heathrow
25h 50m
1 stop
EZE17:55Buenos Aires Ministro Pistarini
9 Feb
EZE22:45Buenos Aires Ministro Pistarini
15h 30m
1 stop
LHR17:15London Heathrow
$1,731
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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 11 November 2025.
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

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 2/3

22:35-22:25

2 stops50h 50m

Buenos Aires Ministro Pistarini

Mon 30/3

23:55-21:00

2 stops41h 05m

$1,650

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 24/2

11:30-22:25

2 stops37h 55m

Buenos Aires Ministro Pistarini

Tue 10/3

23:55-14:10

2 stops35h 15m

$1,653

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 23/2

21:40-05:50

1 stop35h 10m

Buenos Aires Ministro Pistarini

Mon 2/3

16:55-14:35

1 stop18h 40m

$1,662

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 8/2

12:05-09:20

1 stop24h 15m

Buenos Aires Ministro Pistarini

Wed 18/2

22:05-05:55

2 stops28h 50m

$1,694

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 3/3

19:40-17:55

1 stop25h 15m

Buenos Aires Ministro Pistarini

Tue 2/6

21:40-17:15

1 stop15h 35m

$1,711

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 1/12

09:30-07:55

1 stop25h 25m

Buenos Aires Ministro Pistarini

Mon 22/12

17:45-12:50

1 stop16h 05m

$1,725

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 7/3

15:45-21:00

1 stop32h 15m

Buenos Aires Ministro Pistarini

Tue 2/6

21:40-17:15

1 stop15h 35m

$1,728

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 19/2

21:40-15:50

1 stop21h 10m

Buenos Aires Ministro Pistarini

Wed 25/2

01:40-14:35

1 stop33h 55m

$1,784

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 3/2

09:10-07:20

2 stops25h 10m

Buenos Aires Ministro Pistarini

Tue 17/2

23:55-06:40

2 stops27h 45m

$1,795

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 5/3

16:30-07:55

1 stop18h 25m

Buenos Aires Ministro Pistarini

Wed 3/6

16:40-16:40

1 stop20h 00m

$1,817

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 February. Flight prices, which tend to average around $1,801, are often lower during this time because this is during the off-season. If you don’t want to visit Buenos Aires in February, then you should wait until March to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $1,815.

How far in advance should I book a flight 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 $2,100 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 $1,771 on momondo.

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

As of November 2025, prices for London Heathrow Airport to Buenos Aires flights are approximately 15% 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

Direct flights

None
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

  • 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 16h 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