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Cheap flights from London Heathrow Airport to Buenos Aires from $1,154

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 20/9. 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

Avianca Logo
22:05 - 00:10LHR-EZE
30h 05m1 stop
Avianca Logo
07:35 - 14:35EZE-LHR
28h 00m1 stop
$1,475Avianca
Find Deal
Thu, 9 Oct - Sun, 26 Oct
Avianca Logo
22:05 - 00:10LHR-EZE
30h 05m1 stop
Avianca Logo
16:55 - 14:35EZE-LHR
18h 40m1 stop
$1,532Avianca
Find Deal
Thu, 9 Oct - Sun, 2 Nov
Avianca Logo
21:40 - 15:50LHR-EZE
21h 10m1 stop
Avianca Logo
16:55 - 14:35EZE-LHR
18h 40m1 stop
$1,539Avianca
Find Deal
Tue, 20 Jan - Tue, 3 Feb
United Airlines Logo
16:40 - 08:20LHR-EZE
43h 40m2 stops
United Airlines Logo
22:05 - 06:40EZE-LHR
29h 35m2 stops
$1,596United Airlines
Find Deal
Sat, 25 Oct - Thu, 13 Nov
United Airlines Logo
12:05 - 08:20LHR-EZE
23h 15m1 stop
United Airlines Logo
22:55 - 10:15EZE-LHR
32h 20m1 stop
$1,598United Airlines
Find Deal
Sun, 26 Oct - Mon, 9 Mar
United Airlines Logo
12:05 - 08:20LHR-EZE
23h 15m1 stop
United Airlines Logo
22:55 - 07:30EZE-LHR
29h 35m1 stop
$1,602United Airlines
Find Deal
Thu, 12 Mar - Thu, 26 Mar
Logo
17:30 - 07:55LHR-EZE
17h 25m1 stop
Logo
14:40 - 13:00EZE-LHR
19h 20m2 stops
$1,645
Find Deal
Thu, 12 Mar - Wed, 25 Mar
Lufthansa Logo
09:30 - 07:55LHR-EZE
25h 25m1 stop
Lufthansa Logo
17:45 - 22:20EZE-LHR
25h 35m1 stop
$1,663Lufthansa
Find Deal
Thu, 12 Mar - Thu, 26 Mar
Turkish Airlines Logo
17:45 - 22:25LHR-EZE
31h 40m2 stops
Turkish Airlines Logo
23:55 - 14:55EZE-LHR
36h 00m2 stops
$1,667Turkish Airlines
Find Deal
Sat, 29 Nov - Mon, 12 Jan
Lufthansa Logo
17:30 - 07:55LHR-EZE
17h 25m1 stop
Lufthansa Logo
17:45 - 17:45EZE-LHR
21h 00m1 stop
$1,673Lufthansa
Find Deal
Thu, 12 Mar - Fri, 27 Mar

Avianca flights from London Heathrow Airport to Buenos Aires

Our best Avianca deals on London Heathrow Airport to Buenos Aires flight tickets
Avianca
9 Oct
LHR22:05London Heathrow
30h 05m
1 stop
EZE00:10Buenos Aires Ministro Pistarini
26 Oct
EZE07:35Buenos Aires Ministro Pistarini
28h 00m
1 stop
LHR14:35London Heathrow
$1,475
Find similar
Avianca
9 Oct
LHR22:05London Heathrow
30h 05m
1 stop
EZE00:10Buenos Aires Ministro Pistarini
3 Nov
EZE16:55Buenos Aires Ministro Pistarini
18h 40m
1 stop
LHR14:35London Heathrow
$1,532
Find similar
Avianca
20 Jan
LHR21:40London Heathrow
21h 10m
1 stop
EZE15:50Buenos Aires Ministro Pistarini
3 Feb
EZE16:55Buenos Aires Ministro Pistarini
18h 40m
1 stop
LHR14:35London Heathrow
$1,539
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
25 Oct
LHR16:40London Heathrow
41h 40m
2 stops
EZE06:20Buenos Aires Ministro Pistarini
12 Nov
EZE22:05Buenos Aires Ministro Pistarini
28h 50m
2 stops
LHR05:55London Heathrow
$1,596
Find similar
United Airlines
26 Oct
LHR10:00London Heathrow
23h 20m
1 stop
EZE06:20Buenos Aires Ministro Pistarini
25 Feb
EZE23:55Buenos Aires Ministro Pistarini
31h 30m
2 stops
LHR10:25London Heathrow
$1,598
Find similar
United Airlines
12 Mar
LHR12:05London Heathrow
23h 15m
1 stop
EZE08:20Buenos Aires Ministro Pistarini
26 Mar
EZE22:55Buenos Aires Ministro Pistarini
29h 35m
1 stop
LHR07:30London Heathrow
$1,602
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 15 September 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

Thu 9/10

22:05-00:10

1 stop30h 05m

Buenos Aires Ministro Pistarini

Sun 26/10

07:35-14:35

1 stop28h 00m

$1,475

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 9/10

22:05-00:10

1 stop30h 05m

Buenos Aires Ministro Pistarini

Sun 2/11

16:55-14:35

1 stop18h 40m

$1,532

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 20/1

21:40-15:50

1 stop21h 10m

Buenos Aires Ministro Pistarini

Tue 3/2

16:55-14:35

1 stop18h 40m

$1,539

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 25/10

16:40-08:20

2 stops43h 40m

Buenos Aires Ministro Pistarini

Thu 13/11

22:05-06:40

2 stops29h 35m

$1,596

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 26/10

12:05-08:20

1 stop23h 15m

Buenos Aires Ministro Pistarini

Mon 9/3

22:55-10:15

1 stop32h 20m

$1,598

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 12/3

12:05-08:20

1 stop23h 15m

Buenos Aires Ministro Pistarini

Thu 26/3

22:55-07:30

1 stop29h 35m

$1,602

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 12/3

17:30-07:55

1 stop17h 25m

Buenos Aires Ministro Pistarini

Wed 25/3

14:40-13:00

2 stops19h 20m

$1,645

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 12/3

09:30-07:55

1 stop25h 25m

Buenos Aires Ministro Pistarini

Thu 26/3

17:45-22:20

1 stop25h 35m

$1,663

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 29/11

17:45-22:25

2 stops31h 40m

Buenos Aires Ministro Pistarini

Mon 12/1

23:55-14:55

2 stops36h 00m

$1,667

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 12/3

17:30-07:55

1 stop17h 25m

Buenos Aires Ministro Pistarini

Fri 27/3

17:45-17:45

1 stop21h 00m

$1,673

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 $1,747, 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 January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $1,757.

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 $2,036 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 $1,751 on momondo.

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

As of September 2025, prices for London Heathrow Airport to Buenos Aires flights are approximately 9% cheaper 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