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Cheap flights from London Heathrow Airport to Buenos Aires from $978

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 21/3. 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
11:30 - 22:25LHR-EZE
37h 55m2 stops
Turkish Airlines Logo
23:55 - 14:10EZE-LHR
35h 15m2 stops
$1,624Turkish Airlines
Find Deal
Fri, 6 Mar - Thu, 26 Mar
Avianca Logo
22:05 - 15:20LHR-EZE
21h 15m1 stop
Avianca Logo
16:45 - 15:35EZE-LHR
18h 50m1 stop
$1,628Avianca
Find Deal
Fri, 10 Apr - Tue, 14 Apr
Avianca Logo
22:05 - 15:20LHR-EZE
21h 15m1 stop
Avianca Logo
16:45 - 15:35EZE-LHR
18h 50m1 stop
$1,639Avianca
Find Deal
Fri, 10 Apr - Tue, 14 Apr
Turkish Airlines Logo
11:30 - 22:25LHR-EZE
37h 55m2 stops
Turkish Airlines Logo
23:55 - 09:35EZE-LHR
29h 40m2 stops
$1,644Turkish Airlines
Find Deal
Fri, 6 Mar - Fri, 5 Jun
SWISS Logo
20:05 - 11:50LHR-EZE
42h 45m2 stops
SWISS Logo
14:40 - 16:20EZE-LHR
22h 40m2 stops
$1,654SWISS
Find Deal
Mon, 1 Dec - Wed, 4 Feb
United Airlines Logo
12:05 - 07:20LHR-EZE
22h 15m1 stop
United Airlines Logo
23:55 - 07:30EZE-LHR
28h 35m1 stop
$1,683United Airlines
Find Deal
Wed, 21 Jan - Thu, 5 Feb
United Airlines Logo
12:05 - 07:20LHR-EZE
22h 15m1 stop
United Airlines Logo
23:55 - 07:30EZE-LHR
28h 35m1 stop
$1,686United Airlines
Find Deal
Wed, 3 Dec - Tue, 3 Feb
SWISS Logo
20:05 - 11:50LHR-EZE
42h 45m2 stops
SWISS Logo
14:40 - 21:25EZE-LHR
27h 45m3 stops
$1,694SWISS
Find Deal
Mon, 24 Nov - Wed, 3 Dec
British Airways Logo
18:45 - 17:55LHR-EZE
26h 10m1 stop
British Airways Logo
21:40 - 17:15EZE-LHR
15h 35m1 stop
$1,705British Airways
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Tue, 3 Mar - Tue, 2 Jun
British Airways Logo
19:05 - 17:25LHR-EZE
25h 20m1 stop
British Airways Logo
14:20 - 08:25EZE-LHR
15h 05m1 stop
$1,728British Airways
Find Deal
Thu, 4 Dec - Tue, 9 Dec

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
LHR18:45London Heathrow
26h 10m
1 stop
EZE17:55Buenos Aires Ministro Pistarini
2 June
EZE21:40Buenos Aires Ministro Pistarini
15h 35m
1 stop
LHR17:15London Heathrow
$1,705
Find similar
British Airways
4 Dec
LHR19:05London Heathrow
25h 20m
1 stop
EZE17:25Buenos Aires Ministro Pistarini
9 Dec
EZE14:20Buenos Aires Ministro Pistarini
15h 05m
1 stop
LHR08:25London Heathrow
$1,728
Find similar
British Airways
23 Jan
LHR19:40London Heathrow
28h 20m
1 stop
EZE21:00Buenos Aires Ministro Pistarini
9 Feb
EZE22:45Buenos Aires Ministro Pistarini
16h 30m
1 stop
LHR18:15London Heathrow
$1,741
Find similar

Turkish Airlines flights from London Heathrow Airport to Buenos Aires

Our best Turkish Airlines deals on London Heathrow Airport to Buenos Aires flight tickets
Turkish Airlines
6 Mar
LHR11:30London Heathrow
37h 55m
2 stops
EZE22:25Buenos Aires Ministro Pistarini
24 Mar
EZE23:55Buenos Aires Ministro Pistarini
35h 15m
2 stops
LHR14:10London Heathrow
$1,624
Find similar
Turkish Airlines
6 Mar
LHR11:30London Heathrow
37h 55m
2 stops
EZE22:25Buenos Aires Ministro Pistarini
5 June
EZE23:55Buenos Aires Ministro Pistarini
29h 40m
2 stops
LHR09:35London Heathrow
$1,644
Find similar
Turkish Airlines
30 Dec
LHR20:00London Heathrow
29h 25m
2 stops
EZE22:25Buenos Aires Ministro Pistarini
5 Feb
EZE23:55Buenos Aires Ministro Pistarini
36h 00m
2 stops
LHR14:55London Heathrow
$1,651
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 3 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

Fri 6/3

11:30-22:25

2 stops37h 55m

Buenos Aires Ministro Pistarini

Thu 26/3

23:55-14:10

2 stops35h 15m

$1,624

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 10/4

22:05-15:20

1 stop21h 15m

Buenos Aires Ministro Pistarini

Tue 14/4

16:45-15:35

1 stop18h 50m

$1,628

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 10/4

22:05-15:20

1 stop21h 15m

Buenos Aires Ministro Pistarini

Tue 14/4

16:45-15:35

1 stop18h 50m

$1,639

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 6/3

11:30-22:25

2 stops37h 55m

Buenos Aires Ministro Pistarini

Fri 5/6

23:55-09:35

2 stops29h 40m

$1,644

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 1/12

20:05-11:50

2 stops42h 45m

Buenos Aires Ministro Pistarini

Wed 4/2

14:40-16:20

2 stops22h 40m

$1,654

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 21/1

12:05-07:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Thu 5/2

23:55-07:30

1 stop28h 35m

$1,683

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 3/12

12:05-07:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Tue 3/2

23:55-07:30

1 stop28h 35m

$1,686

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 24/11

20:05-11:50

2 stops42h 45m

Buenos Aires Ministro Pistarini

Wed 3/12

14:40-21:25

3 stops27h 45m

$1,694

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 3/3

18:45-17:55

1 stop26h 10m

Buenos Aires Ministro Pistarini

Tue 2/6

21:40-17:15

1 stop15h 35m

$1,705

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 4/12

19:05-17:25

1 stop25h 20m

Buenos Aires Ministro Pistarini

Tue 9/12

14:20-08:25

1 stop15h 05m

$1,728

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 March. Flight prices, which tend to average around $1,767, 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 $1,796.

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 $2,092 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 $1,775 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