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Cheap flights from London Heathrow Airport to Buenos Aires from $961

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 30/10. 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
22:05 - 15:20LHR-EZE
21h 15m1 stop
Avianca Logo
16:45 - 15:35EZE-LHR
18h 50m1 stop
$1,521Avianca
Find Deal
Wed, 8 Apr - Tue, 14 Apr
Avianca Logo
22:05 - 00:10LHR-EZE
30h 05m1 stop
Avianca Logo
16:45 - 15:35EZE-LHR
18h 50m1 stop
$1,575Avianca
Find Deal
Thu, 9 Apr - Tue, 14 Apr
United Airlines Logo
07:40 - 09:20LHR-EZE
28h 40m2 stops
United Airlines Logo
22:05 - 10:15EZE-LHR
33h 10m1 stop
$1,601United Airlines
Find Deal
Mon, 17 Nov - Tue, 25 Nov
United Airlines Logo
09:10 - 09:20LHR-EZE
27h 10m2 stops
United Airlines Logo
22:05 - 07:30EZE-LHR
30h 25m1 stop
$1,609United Airlines
Find Deal
Wed, 21 Jan - Fri, 20 Feb
United Airlines Logo
12:05 - 07:20LHR-EZE
22h 15m1 stop
United Airlines Logo
23:55 - 07:30EZE-LHR
28h 35m1 stop
$1,612United Airlines
Find Deal
Sun, 9 Nov - Sun, 23 Nov
Multiple Airlines Logo
18:40 - 11:50LHR-EZE
20h 10m2 stops
Multiple Airlines Logo
17:45 - 12:50EZE-LHR
16h 05m1 stop
$1,661Multiple Airlines
Find Deal
Tue, 18 Nov - Wed, 10 Dec
SWISS Logo
20:05 - 11:50LHR-EZE
42h 45m2 stops
SWISS Logo
14:40 - 17:50EZE-LHR
24h 10m2 stops
$1,667SWISS
Find Deal
Mon, 17 Nov - Wed, 26 Nov
SWISS Logo
18:40 - 11:50LHR-EZE
20h 10m2 stops
SWISS Logo
14:40 - 16:20EZE-LHR
22h 40m2 stops
$1,709SWISS
Find Deal
Tue, 18 Nov - Wed, 10 Dec
Turkish Airlines Logo
22:35 - 22:25LHR-EZE
26h 50m2 stops
Turkish Airlines Logo
23:55 - 09:55EZE-LHR
31h 00m2 stops
$1,734Turkish Airlines
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Wed, 19 Nov - Thu, 11 Dec
Turkish Airlines Logo
19:55 - 22:25LHR-EZE
29h 30m2 stops
Turkish Airlines Logo
23:55 - 09:55EZE-LHR
31h 00m2 stops
$1,743Turkish Airlines
Find Deal
Wed, 19 Nov - Wed, 10 Dec

Avianca flights from London Heathrow Airport to Buenos Aires

Our best Avianca deals on London Heathrow Airport to Buenos Aires flight tickets
Avianca
8 Apr
LHR22:05London Heathrow
21h 15m
1 stop
EZE15:20Buenos Aires Ministro Pistarini
14 Apr
EZE16:45Buenos Aires Ministro Pistarini
18h 50m
1 stop
LHR15:35London Heathrow
$1,521
Find similar
Avianca
9 Apr
LHR22:05London Heathrow
35h 40m
1 stop
EZE05:45Buenos Aires Ministro Pistarini
16 Apr
EZE16:45Buenos Aires Ministro Pistarini
18h 50m
1 stop
LHR15:35London Heathrow
$1,575
Find similar
Avianca
17 Nov
LHR21:40London Heathrow
35h 10m
1 stop
EZE05:50Buenos Aires Ministro Pistarini
29 Nov
EZE01:40Buenos Aires Ministro Pistarini
33h 55m
1 stop
LHR14:35London Heathrow
$1,651
Find similar

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
17 Nov
LHR07:40London Heathrow
28h 40m
2 stops
EZE09:20Buenos Aires Ministro Pistarini
25 Nov
EZE22:05Buenos Aires Ministro Pistarini
29h 35m
2 stops
LHR06:40London Heathrow
$1,601
Find similar
United Airlines
28 Oct
LHR07:25London Heathrow
25h 55m
2 stops
EZE06:20Buenos Aires Ministro Pistarini
13 Nov
EZE23:55Buenos Aires Ministro Pistarini
29h 30m
2 stops
LHR08:25London Heathrow
$1,609
Find similar
United Airlines
9 Nov
LHR12:05London Heathrow
22h 15m
1 stop
EZE07:20Buenos Aires Ministro Pistarini
23 Nov
EZE23:55Buenos Aires Ministro Pistarini
28h 35m
1 stop
LHR07:30London Heathrow
$1,612
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 17 October 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

Wed 8/4

22:05-15:20

1 stop21h 15m

Buenos Aires Ministro Pistarini

Tue 14/4

16:45-15:35

1 stop18h 50m

$1,521

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 9/4

22:05-00:10

1 stop30h 05m

Buenos Aires Ministro Pistarini

Tue 14/4

16:45-15:35

1 stop18h 50m

$1,575

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 17/11

07:40-09:20

2 stops28h 40m

Buenos Aires Ministro Pistarini

Tue 25/11

22:05-10:15

1 stop33h 10m

$1,601

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 21/1

09:10-09:20

2 stops27h 10m

Buenos Aires Ministro Pistarini

Fri 20/2

22:05-07:30

1 stop30h 25m

$1,609

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 9/11

12:05-07:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Sun 23/11

23:55-07:30

1 stop28h 35m

$1,612

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 18/11

18:40-11:50

2 stops20h 10m

Buenos Aires Ministro Pistarini

Wed 10/12

17:45-12:50

1 stop16h 05m

$1,661

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 17/11

20:05-11:50

2 stops42h 45m

Buenos Aires Ministro Pistarini

Wed 26/11

14:40-17:50

2 stops24h 10m

$1,667

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 18/11

18:40-11:50

2 stops20h 10m

Buenos Aires Ministro Pistarini

Wed 10/12

14:40-16:20

2 stops22h 40m

$1,709

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 19/11

22:35-22:25

2 stops26h 50m

Buenos Aires Ministro Pistarini

Thu 11/12

23:55-09:55

2 stops31h 00m

$1,734

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 19/11

19:55-22:25

2 stops29h 30m

Buenos Aires Ministro Pistarini

Wed 10/12

23:55-09:55

2 stops31h 00m

$1,743

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 $1,800, 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 February to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $1,806.

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 $2,102 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 $1,794 on momondo.

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

As of October 2025, 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

Thu and Sat

Airports in Buenos Aires

1 airport
The fastest flight from London Heathrow Airport to Buenos Aires takes 17h 00m
Direct flights go from London Heathrow Airport to Buenos Aires on Thursday and Saturday. There are no airlines offering direct flights..
There is 1 airport near Buenos Aires: Buenos Aires Ministro Pistarini (EZE)
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  • 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