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Cheap flights from London Heathrow Airport to Buenos Aires from $715

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.
Avianca Logo
9:35 pm - 12:30 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
29h 55m1 stop Bogotá El Dorado
Avianca Logo
1:40 am - 2:35 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
33h 55m1 stop Bogotá El Dorado
$1,267Avianca
Sat, Feb 6 - Mon, Feb 22
LATAM Airlines Logo
6:10 am - 1:15 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
22h 05m2 stops Madrid Barajas Sao Paulo Guarulhos Intl
LATAM Airlines Logo
2:05 am - 5:35 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
36h 30m2 stops Sao Paulo Guarulhos Intl Rome Fiumicino
$1,269LATAM Airlines
Sun, Nov 22 - Sun, Dec 6
United Airlines Logo
6:35 am - 9:20 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
29h 45m2 stops Munich Franz Josef Strauss Houston George Bush Intcntl
United Airlines Logo
11:55 pm - 10:15 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
31h 20m1 stop Houston George Bush Intcntl
$1,270United Airlines
Thu, Nov 26 - Sat, Dec 5
United Airlines Logo
6:35 am - 9:20 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
29h 45m2 stops Munich Franz Josef Strauss Houston George Bush Intcntl
United Airlines Logo
9:00 pm - 6:45 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
29h 45m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$1,272United Airlines
Mon, Mar 8 - Wed, Mar 31
LATAM Airlines Logo
6:10 am - 10:40 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
31h 30m2 stops Madrid Barajas Santiago Arturo Merino Benitez
LATAM Airlines Logo
12:20 pm - 6:15 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
26h 55m2 stops Santiago Arturo Merino Benitez Madrid Barajas
$1,273LATAM Airlines
Sun, Feb 7 - Fri, Feb 26
LATAM Airlines Logo
8:15 pm - 9:40 amLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
16h 25m1 stop Sao Paulo Guarulhos Intl
LATAM Airlines Logo
6:20 pm - 2:05 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
16h 45m1 stop Sao Paulo Guarulhos Intl
$1,275LATAM Airlines
Sat, Nov 7 - Sun, Nov 22
Avianca Logo
9:35 pm - 6:05 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
35h 30m1 stop Bogotá El Dorado
Avianca Logo
7:25 am - 2:35 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 10m1 stop Bogotá El Dorado
$1,276Avianca
Wed, Nov 4 - Wed, Nov 18
Avianca Logo
9:35 pm - 3:40 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
21h 05m1 stop Bogotá El Dorado
Avianca Logo
7:25 am - 2:35 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 10m1 stop Bogotá El Dorado
$1,281Avianca
Fri, Feb 5 - Sat, Feb 27
Avianca Logo
10:05 pm - 5:40 amLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
35h 35m1 stop Bogotá El Dorado
Avianca Logo
7:00 am - 3:35 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
28h 35m1 stop Bogotá El Dorado
$1,281Avianca
Mon, Mar 29 - Thu, Apr 15
United Airlines Logo
3:10 pm - 7:20 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
43h 10m2 stops Newark Houston George Bush Intcntl
United Airlines Logo
11:55 pm - 5:55 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
27h 00m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$1,282United Airlines
Wed, Nov 11 - Sun, Nov 22

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American Airlines flights from London Heathrow Airport to Buenos Aires

Our best American Airlines deals on London Heathrow Airport to Buenos Aires flight tickets
American Airlines
Jan 29
LHR2:30 pmLondon Heathrow
20h 45m
1 stop
EZE8:15 amBuenos Aires Ministro Pistarini
Feb 13
EZE11:35 pmBuenos Aires Ministro Pistarini
28h 10m
1 stop
LHR6:45 amLondon Heathrow
$1,326
American Airlines
Jan 29
LHR3:35 pmLondon Heathrow
22h 10m
1 stop
EZE10:45 amBuenos Aires Ministro Pistarini
Feb 13
EZE11:35 pmBuenos Aires Ministro Pistarini
28h 10m
1 stop
LHR6:45 amLondon Heathrow
$1,328

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 5
LHR3:00 pmLondon Heathrow
27h 05m
2 stops
EZE3:05 pmBuenos Aires Ministro Pistarini
Feb 28
EZE4:45 pmBuenos Aires Ministro Pistarini
34h 45m
2 stops
LHR6:30 amLondon Heathrow
$1,295
Air Canada
Feb 26
LHR9:00 amLondon Heathrow
33h 05m
3 stops
EZE3:05 pmBuenos Aires Ministro Pistarini
Mar 15
EZE4:50 pmBuenos Aires Ministro Pistarini
25h 10m
3 stops
LHR9:00 pmLondon Heathrow
$1,296
Air Canada
Feb 26
LHR6:00 pmLondon Heathrow
24h 05m
2 stops
EZE3:05 pmBuenos Aires Ministro Pistarini
Mar 15
EZE4:50 pmBuenos Aires Ministro Pistarini
25h 10m
3 stops
LHR9:00 pmLondon Heathrow
$1,297

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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Cheapest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 2/6

9:35 pm-12:30 am

1 stop29h 55m

Buenos Aires Ministro Pistarini

Mon 2/22

1:40 am-2:35 pm

1 stop33h 55m

$1,267

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 11/22

6:10 am-1:15 am

2 stops22h 05m

Buenos Aires Ministro Pistarini

Sun 12/6

2:05 am-5:35 pm

2 stops36h 30m

$1,269

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Thu 11/26

6:35 am-9:20 am

2 stops29h 45m

Buenos Aires Ministro Pistarini

Sat 12/5

11:55 pm-10:15 am

1 stop31h 20m

$1,270

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 3/8

6:35 am-9:20 am

2 stops29h 45m

Buenos Aires Ministro Pistarini

Wed 3/31

9:00 pm-6:45 am

2 stops29h 45m

$1,272

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 2/7

6:10 am-10:40 am

2 stops31h 30m

Buenos Aires Ministro Pistarini

Fri 2/26

12:20 pm-6:15 pm

2 stops26h 55m

$1,273
Quickest round-trip

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Sat 11/7

8:15 pm-9:40 am

1 stop16h 25m

Buenos Aires Jorge Newbery

Sun 11/22

6:20 pm-2:05 pm

1 stop16h 45m

$1,275

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Wed 11/4

9:35 pm-6:05 am

1 stop35h 30m

Buenos Aires Ministro Pistarini

Wed 11/18

7:25 am-2:35 pm

1 stop28h 10m

$1,276

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 2/5

9:35 pm-3:40 pm

1 stop21h 05m

Buenos Aires Ministro Pistarini

Sat 2/27

7:25 am-2:35 pm

1 stop28h 10m

$1,281

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Mon 3/29

10:05 pm-5:40 am

1 stop35h 35m

Buenos Aires Jorge Newbery

Thu 4/15

7:00 am-3:35 pm

1 stop28h 35m

$1,281

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Wed 11/11

3:10 pm-7:20 am

2 stops43h 10m

Buenos Aires Ministro Pistarini

Sun 11/22

11:55 pm-5:55 am

2 stops27h 00m

$1,282

Flights are sorted by cheapest round-trip flights 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 $1,284 to $1,691.
The lowest price recently found on this route was $1,267.

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 $1,124, 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 June instead. Flights to Buenos Aires in June, while not as cheap as those in May, still average around $1,242.

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 $1,191 on momondo.

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

You could potentially save up to 18% 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 October 2026, 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 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

$715

Fastest flight time

14h 00m

Direct flights

Mon, Tue, Thu, Fri, Sat 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 $715. The best round-trip flight deal from London Heathrow Airport to Buenos Aires found on momondo in the last 72 hours is $1,267.
The fastest flight from London Heathrow Airport to Buenos Aires takes 14h 00m
Direct flights go from London Heathrow Airport to Buenos Aires on Monday, Tuesday, Thursday, Friday, Saturday 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 14h 00m.

  • 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?

  • What is the most popular airline 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