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Cheap flights from London Heathrow Airport to Buenos Aires from $857

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 7/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London Heathrow Airport to Buenos Aires

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
20:00 - 16:05
LHR
-
EZE
24h 05m
1 stop
British Airways Logo
12:25 - 08:10
EZE
-
LHR
15h 45m
1 stop
$1,676British Airways
Tue, 13 Oct - Tue, 20 Oct
Lufthansa Logo
13:30 - 06:25
LHR
-
EZE
20h 55m
1 stop
Lufthansa Logo
16:35 - 17:40
EZE
-
LHR
21h 05m
1 stop
$1,679Lufthansa
Thu, 2 Jul - Fri, 10 Jul
Multiple Airlines Logo
13:30 - 06:25
LHR
-
EZE
20h 55m
1 stop
Multiple Airlines Logo
13:30 - 17:50
EZE
-
LHR
24h 20m
2 stops
$1,682Multiple Airlines
Wed, 1 Jul - Wed, 29 Jul
LEVEL Logo
20:50 - 18:00
LHR
-
EZE
24h 10m
1 stop
LEVEL Logo
11:55 - 20:05
EZE
-
LHR
29h 10m
1 stop
$1,692LEVEL
Tue, 1 Dec - Thu, 17 Dec
Lufthansa Logo
13:30 - 06:25
LHR
-
EZE
20h 55m
1 stop
Lufthansa Logo
16:35 - 20:40
EZE
-
LHR
24h 05m
1 stop
$1,699Lufthansa
Wed, 1 Jul - Fri, 10 Jul
British Airways Logo
21:45 - 10:45
LHR
-
EZE
17h 00m
1 stop
British Airways Logo
21:40 - 19:10
EZE
-
LHR
17h 30m
1 stop
$1,710British Airways
Sat, 5 Sep - Sat, 26 Sep
British Airways Logo
20:00 - 16:05
LHR
-
EZE
24h 05m
1 stop
British Airways Logo
21:40 - 19:10
EZE
-
LHR
17h 30m
1 stop
$1,713British Airways
Wed, 1 Jul - Wed, 8 Jul
British Airways Logo
18:45 - 19:55
LHR
-
EZE
29h 10m
1 stop
British Airways Logo
12:25 - 08:10
EZE
-
LHR
15h 45m
1 stop
$1,715British Airways
Mon, 29 Jun - Tue, 7 Jul
British Airways Logo
21:45 - 10:45
LHR
-
EZE
17h 00m
1 stop
British Airways Logo
13:00 - 08:25
EZE
-
LHR
15h 25m
1 stop
$1,716British Airways
Mon, 5 Oct - Wed, 14 Oct
British Airways Logo
06:15 - 19:55
LHR
-
EZE
17h 40m
1 stop
British Airways Logo
21:40 - 18:15
EZE
-
LHR
16h 35m
1 stop
$1,717British Airways
Wed, 2 Sep - Sat, 26 Sep

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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
13 Oct
LHR20:00London Heathrow
24h 05m
1 stop
EZE16:05Buenos Aires Ministro Pistarini
20 Oct
EZE12:25Buenos Aires Ministro Pistarini
15h 45m
1 stop
LHR08:10London Heathrow
$1,676
British Airways
5 Sept
LHR21:45London Heathrow
17h 00m
1 stop
EZE10:45Buenos Aires Ministro Pistarini
26 Sept
EZE21:40Buenos Aires Ministro Pistarini
17h 30m
1 stop
LHR19:10London Heathrow
$1,710
British Airways
1 July
LHR20:00London Heathrow
24h 05m
1 stop
EZE16:05Buenos Aires Ministro Pistarini
8 July
EZE21:40Buenos Aires Ministro Pistarini
17h 30m
1 stop
LHR19:10London Heathrow
$1,713

Lufthansa flights from London Heathrow Airport to Buenos Aires

Our best Lufthansa deals on London Heathrow Airport to Buenos Aires flight tickets
Lufthansa
2 July
LHR13:30London Heathrow
20h 55m
1 stop
EZE06:25Buenos Aires Ministro Pistarini
10 July
EZE16:35Buenos Aires Ministro Pistarini
21h 05m
1 stop
LHR17:40London Heathrow
$1,679
Lufthansa
1 July
LHR13:30London Heathrow
20h 55m
1 stop
EZE06:25Buenos Aires Ministro Pistarini
10 July
EZE16:35Buenos Aires Ministro Pistarini
24h 05m
1 stop
LHR20:40London Heathrow
$1,699
Lufthansa
21 June
LHR07:30London Heathrow
26h 55m
1 stop
EZE06:25Buenos Aires Ministro Pistarini
28 June
EZE16:35Buenos Aires Ministro Pistarini
22h 05m
1 stop
LHR18:40London Heathrow
$1,743

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 12 June 2026.
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

Cheapest return flight

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 13/10

20:00-16:05

1 stop24h 05m

Buenos Aires Ministro Pistarini

Tue 20/10

12:25-08:10

1 stop15h 45m

$1,676

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 2/7

13:30-06:25

1 stop20h 55m

Buenos Aires Ministro Pistarini

Fri 10/7

16:35-17:40

1 stop21h 05m

$1,679

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 1/7

13:30-06:25

1 stop20h 55m

Buenos Aires Ministro Pistarini

Wed 29/7

13:30-17:50

2 stops24h 20m

$1,682

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 1/12

20:50-18:00

1 stop24h 10m

Buenos Aires Ministro Pistarini

Thu 17/12

11:55-20:05

1 stop29h 10m

$1,692

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 1/7

13:30-06:25

1 stop20h 55m

Buenos Aires Ministro Pistarini

Fri 10/7

16:35-20:40

1 stop24h 05m

$1,699

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 5/9

21:45-10:45

1 stop17h 00m

Buenos Aires Ministro Pistarini

Sat 26/9

21:40-19:10

1 stop17h 30m

$1,710

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 1/7

20:00-16:05

1 stop24h 05m

Buenos Aires Ministro Pistarini

Wed 8/7

21:40-19:10

1 stop17h 30m

$1,713

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 29/6

18:45-19:55

1 stop29h 10m

Buenos Aires Ministro Pistarini

Tue 7/7

12:25-08:10

1 stop15h 45m

$1,715
Fastest return journey

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 5/10

21:45-10:45

1 stop17h 00m

Buenos Aires Ministro Pistarini

Wed 14/10

13:00-08:25

1 stop15h 25m

$1,716

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 2/9

06:15-19:55

1 stop17h 40m

Buenos Aires Ministro Pistarini

Sat 26/9

21:40-18:15

1 stop16h 35m

$1,717

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 July. Flight prices, which tend to average around $225, are often lower during this time because this is during the off-season. If you don’t want to visit Buenos Aires in July, then you should wait until March to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $330.

How far in advance should I book a flight from London Heathrow Airport 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 $1,980 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 $1,475 on momondo.

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

As of June 2026, prices for London Heathrow Airport to Buenos Aires flights are approximately 27% 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

Fastest flight time

17h 00m

Direct flights

Thu

Airports in Buenos Aires

2 airports
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. There are no airlines offering direct flights..
There are 2 airports in Buenos Aires. From London Heathrow Airport there are direct flights to Buenos Aires Ministro Pistarini (EZE).
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Buenos Aires

  • 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 17h 00m 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