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Cheap flights from London Heathrow Airport to Buenos Aires from $720

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London Heathrow Airport to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:30 am - 7:55 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
27h 25m1 stop Frankfurt am Main
Multiple Airlines Logo
2:40 pm - 1:00 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
19h 20m2 stops Sao Paulo Guarulhos Intl Zurich
$1,085Multiple Airlines
Thu, Nov 19 - Wed, Dec 2
Multiple Airlines Logo
8:30 am - 7:55 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
26h 25m1 stop Frankfurt am Main
Multiple Airlines Logo
2:40 pm - 1:00 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
19h 20m2 stops Sao Paulo Guarulhos Intl Zurich
$1,092Multiple Airlines
Sun, Nov 22 - Wed, Dec 2
Multiple Airlines Logo
8:30 am - 7:55 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
26h 25m1 stop Frankfurt am Main
Multiple Airlines Logo
2:40 pm - 1:00 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
19h 20m2 stops Sao Paulo Guarulhos Intl Zurich
$1,096Multiple Airlines
Sat, Nov 21 - Wed, Dec 9
Multiple Airlines Logo
3:30 pm - 7:55 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
19h 25m1 stop Frankfurt am Main
Multiple Airlines Logo
2:40 pm - 4:20 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
22h 40m2 stops Sao Paulo Guarulhos Intl Zurich
$1,108Multiple Airlines
Mon, Nov 16 - Wed, Nov 25
Multiple Airlines Logo
3:30 pm - 7:55 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
19h 25m1 stop Frankfurt am Main
Multiple Airlines Logo
2:40 pm - 4:20 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
22h 40m2 stops Sao Paulo Guarulhos Intl Zurich
$1,109Multiple Airlines
Mon, Nov 16 - Wed, Nov 25
Multiple Airlines Logo
6:30 pm - 7:55 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
16h 25m1 stop Frankfurt am Main
Multiple Airlines Logo
1:55 pm - 9:40 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
16h 45m1 stop Rome Fiumicino
$1,135Multiple Airlines
Mon, Nov 23 - Mon, Dec 7
Multiple Airlines Logo
5:30 pm - 7:55 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
17h 25m1 stop Frankfurt am Main
Multiple Airlines Logo
1:55 pm - 9:40 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
16h 45m1 stop Rome Fiumicino
$1,138Multiple Airlines
Mon, Nov 23 - Thu, Dec 3
Lufthansa Logo
11:30 am - 7:55 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
23h 25m1 stop Frankfurt am Main
Lufthansa Logo
5:45 pm - 6:45 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
22h 00m1 stop Frankfurt am Main
$1,143Lufthansa
Mon, Nov 16 - Mon, Nov 23
Multiple Airlines Logo
5:30 pm - 7:55 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
17h 25m1 stop Frankfurt am Main
Multiple Airlines Logo
1:55 pm - 3:40 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
22h 45m1 stop Rome Fiumicino
$1,157Multiple Airlines
Mon, Nov 16 - Wed, Nov 25
Multiple Airlines Logo
3:30 pm - 7:55 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
19h 25m1 stop Frankfurt am Main
Multiple Airlines Logo
1:55 pm - 3:40 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
22h 45m1 stop Rome Fiumicino
$1,159Multiple Airlines
Mon, Nov 16 - Wed, Nov 25

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Air Canada flights from London Heathrow Airport to Buenos Aires

Our best Air Canada deals on London Heathrow Airport to Buenos Aires flight tickets
Air Canada
Feb 11
LHR3:00 pmLondon Heathrow
27h 05m
2 stops
EZE3:05 pmBuenos Aires Ministro Pistarini
Mar 4
EZE4:50 pmBuenos Aires Ministro Pistarini
34h 40m
2 stops
LHR6:30 amLondon Heathrow
$1,202
Air Canada
Feb 11
LHR3:00 pmLondon Heathrow
27h 05m
2 stops
EZE3:05 pmBuenos Aires Ministro Pistarini
Mar 4
EZE4:50 pmBuenos Aires Ministro Pistarini
36h 40m
2 stops
LHR8:30 amLondon Heathrow
$1,204
Air Canada
Feb 11
LHR3:00 pmLondon Heathrow
27h 05m
2 stops
EZE3:05 pmBuenos Aires Ministro Pistarini
Mar 4
EZE4:50 pmBuenos Aires Ministro Pistarini
36h 40m
2 stops
LHR8:30 amLondon Heathrow
$1,211

SWISS flights from London Heathrow Airport to Buenos Aires

Our best SWISS deals on London Heathrow Airport to Buenos Aires flight tickets
SWISS
Nov 23
LHR8:05 pmLondon Heathrow
42h 45m
2 stops
EZE11:50 amBuenos Aires Ministro Pistarini
Dec 9
EZE2:40 pmBuenos Aires Ministro Pistarini
19h 20m
2 stops
LHR1:00 pmLondon Heathrow
$1,206
SWISS
Nov 23
LHR8:05 pmLondon Heathrow
42h 45m
2 stops
EZE11:50 amBuenos Aires Ministro Pistarini
Dec 2
EZE2:40 pmBuenos Aires Ministro Pistarini
22h 40m
2 stops
LHR4:20 pmLondon Heathrow
$1,210
SWISS
Nov 11
LHR8:05 pmLondon Heathrow
46h 55m
2 stops
EZE4:00 pmBuenos Aires Ministro Pistarini
Nov 25
EZE2:05 amBuenos Aires Ministro Pistarini
31h 55m
2 stops
LHR1:00 pmLondon Heathrow
$1,213

momondo Fare Finder

 
Use the filters below to find and compare flights from London Heathrow Airport to Buenos Aires that are best for you.

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Depart

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Price

Cheapest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Thu 11/19

7:30 am-7:55 am

1 stop27h 25m

Buenos Aires Ministro Pistarini

Wed 12/2

2:40 pm-1:00 pm

2 stops19h 20m

$1,085

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 11/22

8:30 am-7:55 am

1 stop26h 25m

Buenos Aires Ministro Pistarini

Wed 12/2

2:40 pm-1:00 pm

2 stops19h 20m

$1,092

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 11/21

8:30 am-7:55 am

1 stop26h 25m

Buenos Aires Ministro Pistarini

Wed 12/9

2:40 pm-1:00 pm

2 stops19h 20m

$1,096

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 11/16

3:30 pm-7:55 am

1 stop19h 25m

Buenos Aires Ministro Pistarini

Wed 11/25

2:40 pm-4:20 pm

2 stops22h 40m

$1,108

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 11/16

3:30 pm-7:55 am

1 stop19h 25m

Buenos Aires Ministro Pistarini

Wed 11/25

2:40 pm-4:20 pm

2 stops22h 40m

$1,109
Quickest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 11/23

6:30 pm-7:55 am

1 stop16h 25m

Buenos Aires Ministro Pistarini

Mon 12/7

1:55 pm-9:40 am

1 stop16h 45m

$1,135

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 11/23

5:30 pm-7:55 am

1 stop17h 25m

Buenos Aires Ministro Pistarini

Thu 12/3

1:55 pm-9:40 am

1 stop16h 45m

$1,138

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 11/16

11:30 am-7:55 am

1 stop23h 25m

Buenos Aires Ministro Pistarini

Mon 11/23

5:45 pm-6:45 pm

1 stop22h 00m

$1,143

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 11/16

5:30 pm-7:55 am

1 stop17h 25m

Buenos Aires Ministro Pistarini

Wed 11/25

1:55 pm-3:40 pm

1 stop22h 45m

$1,157

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 11/16

3:30 pm-7:55 am

1 stop19h 25m

Buenos Aires Ministro Pistarini

Wed 11/25

1:55 pm-3:40 pm

1 stop22h 45m

$1,159

Flights are sorted by cheapest round-trip 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?

Prices are currently low for flights on this route.

Typical prices usually range from $1,225 to $1,639.
The lowest price recently found on this route was $1,085.

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from London Heathrow Airport is in May. Flight prices, which tend to average around $1,142, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Buenos Aires from London Heathrow Airport during November instead. Flights to Buenos Aires in November, while not as cheap as those in May, still average around $1,197.

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 $1,380 when searching weeks out. 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 $1,075 on momondo.

Can stopping save me money on London Heathrow Airport to Buenos Aires flights?

You could potentially save up to 19% on your flight if you consider stops on a London Heathrow Airport to Buenos Aires flight.

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

As of August 2026, prices for London Heathrow Airport to Buenos Aires flights are approximately 21% 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 round-trip 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

Best Price Found

$720

Fastest flight time

16h 15m

Direct flights

Mon, Thu and Sun

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from London Heathrow Airport in the past 72 hours is $720. The best round-trip flight deal from London Heathrow Airport to Buenos Aires found on momondo in the last 72 hours is $1,085.
The fastest flight from London Heathrow Airport to Buenos Aires takes 16h 15m
Direct flights go from London Heathrow Airport to Buenos Aires on Monday, Thursday and Sunday. 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?

    The distance between London Heathrow and Buenos Aires is about 6898.3 mi. By plane, this route typically takes 16h 15m.

  • 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 required travel and health documents for your Buenos Aires trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Buenos Aires. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • 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?

Finding the right flight to Buenos Aires from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Buenos Aires quick and easy, saving you time and money.

Can I find flights from London to Buenos Aires with flexible booking policies on momondo?

Yes. All flights to Buenos Aires from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Buenos Aires?

Once all potential London to Buenos Aires flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London to Buenos Aires right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to Buenos Aires flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport