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Cheap flights from London Heathrow Airport to Buenos Aires from $932

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 25/1. 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.
Avianca Logo
21:40 - 05:50LHR-EZE
35h 10m1 stop
Avianca Logo
01:40 - 14:35EZE-LHR
33h 55m1 stop
$1,678Avianca
Find Deal
Mon, 2 Mar - Sun, 15 Mar
United Airlines Logo
12:05 - 09:20LHR-EZE
24h 15m1 stop
United Airlines Logo
23:55 - 07:30EZE-LHR
28h 35m1 stop
$1,704United Airlines
Find Deal
Mon, 2 Feb - Tue, 17 Feb
United Airlines Logo
08:30 - 09:20LHR-EZE
27h 50m2 stops
United Airlines Logo
22:05 - 07:30EZE-LHR
30h 25m1 stop
$1,715United Airlines
Find Deal
Tue, 27 Jan - Tue, 10 Feb
Turkish Airlines Logo
06:35 - 22:25LHR-EZE
42h 50m2 stops
Turkish Airlines Logo
23:55 - 14:10EZE-LHR
35h 15m2 stops
$1,732Turkish Airlines
Find Deal
Tue, 3 Mar - Tue, 17 Mar
SWISS Logo
20:05 - 11:50LHR-EZE
42h 45m2 stops
SWISS Logo
14:40 - 13:00EZE-LHR
19h 20m2 stops
$1,735SWISS
Find Deal
Mon, 23 Feb - Wed, 11 Mar
British Airways Logo
11:25 - 08:40LHR-EZE
24h 15m1 stop
British Airways Logo
22:45 - 17:15EZE-LHR
15h 30m1 stop
$1,740British Airways
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Thu, 15 Jan - Tue, 10 Feb
British Airways Logo
15:45 - 09:10LHR-EZE
20h 25m1 stop
British Airways Logo
14:20 - 09:15EZE-LHR
15h 55m1 stop
$1,742British Airways
Find Deal
Tue, 27 Jan - Thu, 19 Mar
Turkish Airlines Logo
22:35 - 22:25LHR-EZE
50h 50m2 stops
Turkish Airlines Logo
23:55 - 14:55EZE-LHR
36h 00m2 stops
$1,749Turkish Airlines
Find Deal
Thu, 12 Mar - Mon, 16 Mar
Turkish Airlines Logo
22:35 - 22:25LHR-EZE
50h 50m2 stops
Turkish Airlines Logo
23:55 - 14:10EZE-LHR
35h 15m2 stops
$1,752Turkish Airlines
Find Deal
Mon, 2 Mar - Tue, 17 Mar
Turkish Airlines Logo
22:35 - 22:25LHR-EZE
50h 50m2 stops
Turkish Airlines Logo
23:55 - 14:55EZE-LHR
36h 00m2 stops
$1,773Turkish Airlines
Find Deal
Mon, 2 Mar - Mon, 16 Mar

Delta flights from London Heathrow Airport to Buenos Aires

Our best Delta deals on London Heathrow Airport to Buenos Aires flight tickets
Delta
2 Dec
LHR08:55London Heathrow
27h 05m
1 stop
EZE09:00Buenos Aires Ministro Pistarini
4 Mar
EZE22:25Buenos Aires Ministro Pistarini
29h 25m
2 stops
LHR06:50London Heathrow
$1,869
Find similar
Delta
8 Dec
LHR16:10London Heathrow
21h 05m
1 stop
EZE10:15Buenos Aires Ministro Pistarini
1 Feb
EZE22:25Buenos Aires Ministro Pistarini
29h 25m
2 stops
LHR06:50London Heathrow
$1,870
Find similar
Delta
5 Dec
LHR09:40London Heathrow
24h 40m
2 stops
EZE07:20Buenos Aires Ministro Pistarini
21 Jan
EZE22:25Buenos Aires Ministro Pistarini
28h 55m
1 stop
LHR06:20London Heathrow
$1,872
Find similar

Avianca flights from London Heathrow Airport to Buenos Aires

Our best Avianca deals on London Heathrow Airport to Buenos Aires flight tickets
Avianca
2 Mar
LHR21:40London Heathrow
35h 10m
1 stop
EZE05:50Buenos Aires Ministro Pistarini
18 Mar
EZE16:55Buenos Aires Ministro Pistarini
18h 40m
1 stop
LHR14:35London Heathrow
$1,678
Find similar
Avianca
4 Jan
LHR21:40London Heathrow
35h 10m
1 stop
EZE05:50Buenos Aires Ministro Pistarini
27 Jan
EZE07:30Buenos Aires Ministro Pistarini
28h 05m
1 stop
LHR14:35London Heathrow
$1,957
Find similar
Avianca
30 Nov
LHR21:40London Heathrow
35h 10m
1 stop
EZE05:50Buenos Aires Ministro Pistarini
8 Mar
EZE16:55Buenos Aires Ministro Pistarini
18h 40m
1 stop
LHR14:35London Heathrow
$2,340
Find similar

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 22 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

21:40-05:50

1 stop35h 10m

Buenos Aires Ministro Pistarini

Sun 15/3

01:40-14:35

1 stop33h 55m

$1,678

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 2/2

12:05-09:20

1 stop24h 15m

Buenos Aires Ministro Pistarini

Tue 17/2

23:55-07:30

1 stop28h 35m

$1,704

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 27/1

08:30-09:20

2 stops27h 50m

Buenos Aires Ministro Pistarini

Tue 10/2

22:05-07:30

1 stop30h 25m

$1,715

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 3/3

06:35-22:25

2 stops42h 50m

Buenos Aires Ministro Pistarini

Tue 17/3

23:55-14:10

2 stops35h 15m

$1,732

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 23/2

20:05-11:50

2 stops42h 45m

Buenos Aires Ministro Pistarini

Wed 11/3

14:40-13:00

2 stops19h 20m

$1,735

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 15/1

11:25-08:40

1 stop24h 15m

Buenos Aires Ministro Pistarini

Tue 10/2

22:45-17:15

1 stop15h 30m

$1,740

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 27/1

15:45-09:10

1 stop20h 25m

Buenos Aires Ministro Pistarini

Thu 19/3

14:20-09:15

1 stop15h 55m

$1,742

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 12/3

22:35-22:25

2 stops50h 50m

Buenos Aires Ministro Pistarini

Mon 16/3

23:55-14:55

2 stops36h 00m

$1,749

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 2/3

22:35-22:25

2 stops50h 50m

Buenos Aires Ministro Pistarini

Tue 17/3

23:55-14:10

2 stops35h 15m

$1,752

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 2/3

22:35-22:25

2 stops50h 50m

Buenos Aires Ministro Pistarini

Mon 16/3

23:55-14:55

2 stops36h 00m

$1,773

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 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 $1,824, 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 $1,844.

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 $2,126 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 $1,793 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 25m 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