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Cheap flights from London Heathrow Airport to Buenos Aires from $660

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.
LEVEL Logo
9:55 am - 5:30 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
34h 35m1 stop Barcelona-El Prat
LEVEL Logo
1:00 pm - 8:05 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 05m1 stop Barcelona-El Prat
$1,153LEVEL
Thu, Feb 25 - Mon, Mar 8
British Airways Logo
7:40 pm - 5:25 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
24h 45m1 stop Madrid Barajas
British Airways Logo
3:10 pm - 8:30 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
13h 20mnonstop
$1,173British Airways
Tue, Jan 26 - Tue, Apr 27
Avianca Logo
9:35 pm - 3:40 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
21h 05m1 stop Bogotá El Dorado
Avianca Logo
4:50 pm - 3:35 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
18h 45m1 stop Bogotá El Dorado
$1,174Avianca
Thu, Mar 18 - Wed, Mar 31
LEVEL Logo
9:55 am - 11:10 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
28h 15m1 stop Barcelona-El Prat
LEVEL Logo
1:00 pm - 9:10 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
17h 10m1 stop Barcelona-El Prat
$1,181LEVEL
Tue, Feb 9 - Tue, Feb 16
LEVEL Logo
9:55 am - 5:30 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
34h 35m1 stop Barcelona-El Prat
LEVEL Logo
1:00 pm - 8:05 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 05m1 stop Barcelona-El Prat
$1,184LEVEL
Mon, Feb 22 - Fri, Mar 5
LATAM Airlines Logo
7:05 pm - 4:00 pmLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
23h 55m2 stops Madrid Barajas Lima J Chavez Intl
LATAM Airlines Logo
10:35 am - 1:25 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
22h 50m2 stops Sao Paulo Guarulhos Intl Barcelona-El Prat
$1,185LATAM Airlines
Wed, Mar 17 - Wed, Mar 31
Iberia Logo
7:20 pm - 11:10 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
18h 50m1 stop Barcelona-El Prat
Iberia Logo
10:55 am - 11:40 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
20h 45m1 stop Barcelona-El Prat
$1,190Iberia
Thu, Mar 11 - Mon, Mar 29
LATAM Airlines Logo
6:45 pm - 4:00 pmLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
24h 15m2 stops Madrid Barajas Lima J Chavez Intl
LATAM Airlines Logo
10:35 am - 2:05 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
24h 30m1 stop Sao Paulo Guarulhos Intl
$1,193LATAM Airlines
Mon, Nov 30 - Sun, Dec 6
LATAM Airlines Logo
5:25 pm - 4:00 pmLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
25h 35m2 stops Madrid Barajas Lima J Chavez Intl
LATAM Airlines Logo
6:20 pm - 3:05 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
16h 45m1 stop Sao Paulo Guarulhos Intl
$1,195LATAM Airlines
Thu, Mar 11 - Tue, Mar 30
LATAM Airlines Logo
6:45 pm - 4:00 pmLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
24h 15m2 stops Madrid Barajas Lima J Chavez Intl
LATAM Airlines Logo
11:45 am - 5:35 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
26h 50m2 stops Sao Paulo Guarulhos Intl Rome Fiumicino
$1,196LATAM Airlines
Mon, Nov 30 - Wed, Dec 9

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LEVEL flights from London Heathrow Airport to Buenos Aires

Our best LEVEL deals on London Heathrow Airport to Buenos Aires flight tickets
LEVEL
Feb 25
LHR9:55 amLondon Heathrow
34h 35m
1 stop
EZE5:30 pmBuenos Aires Ministro Pistarini
Mar 8
EZE1:00 pmBuenos Aires Ministro Pistarini
28h 05m
1 stop
LHR8:05 pmLondon Heathrow
$1,153
LEVEL
Feb 9
LHR9:55 amLondon Heathrow
28h 15m
1 stop
EZE11:10 amBuenos Aires Ministro Pistarini
Feb 16
EZE1:00 pmBuenos Aires Ministro Pistarini
17h 10m
1 stop
LHR9:10 amLondon Heathrow
$1,181
LEVEL
Feb 22
LHR9:55 amLondon Heathrow
34h 35m
1 stop
EZE5:30 pmBuenos Aires Ministro Pistarini
Mar 5
EZE1:00 pmBuenos Aires Ministro Pistarini
28h 05m
1 stop
LHR8:05 pmLondon Heathrow
$1,184

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
Jan 26
LHR7:40 pmLondon Heathrow
24h 45m
1 stop
EZE5:25 pmBuenos Aires Ministro Pistarini
Apr 27
EZE3:10 pmBuenos Aires Ministro Pistarini
13h 20m
LHR8:30 amLondon Heathrow
$1,173
British Airways
Jan 28
LHR6:45 pmLondon Heathrow
25h 40m
1 stop
EZE5:25 pmBuenos Aires Ministro Pistarini
Jun 14
EZE3:10 pmBuenos Aires Ministro Pistarini
13h 20m
LHR8:30 amLondon Heathrow
$1,211
British Airways
Nov 30
LHR7:40 pmLondon Heathrow
24h 45m
1 stop
EZE5:25 pmBuenos Aires Ministro Pistarini
Dec 9
EZE7:20 pmBuenos Aires Ministro Pistarini
15h 05m
1 stop
LHR1:25 pmLondon Heathrow
$1,221

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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Price

Cheapest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Thu 2/25

9:55 am-5:30 pm

1 stop34h 35m

Buenos Aires Ministro Pistarini

Mon 3/8

1:00 pm-8:05 pm

1 stop28h 05m

$1,153
Quickest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 1/26

7:40 pm-5:25 pm

1 stop24h 45m

Buenos Aires Ministro Pistarini

Tue 4/27

3:10 pm-8:30 am

Nonstop13h 20m

$1,173

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Thu 3/18

9:35 pm-3:40 pm

1 stop21h 05m

Buenos Aires Ministro Pistarini

Wed 3/31

4:50 pm-3:35 pm

1 stop18h 45m

$1,174

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 2/9

9:55 am-11:10 am

1 stop28h 15m

Buenos Aires Ministro Pistarini

Tue 2/16

1:00 pm-9:10 am

1 stop17h 10m

$1,181

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 2/22

9:55 am-5:30 pm

1 stop34h 35m

Buenos Aires Ministro Pistarini

Fri 3/5

1:00 pm-8:05 pm

1 stop28h 05m

$1,184

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Wed 3/17

7:05 pm-4:00 pm

2 stops23h 55m

Buenos Aires Jorge Newbery

Wed 3/31

10:35 am-1:25 pm

2 stops22h 50m

$1,185

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Thu 3/11

7:20 pm-11:10 am

1 stop18h 50m

Buenos Aires Ministro Pistarini

Mon 3/29

10:55 am-11:40 am

1 stop20h 45m

$1,190

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Mon 11/30

6:45 pm-4:00 pm

2 stops24h 15m

Buenos Aires Jorge Newbery

Sun 12/6

10:35 am-2:05 pm

1 stop24h 30m

$1,193

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Thu 3/11

5:25 pm-4:00 pm

2 stops25h 35m

Buenos Aires Jorge Newbery

Tue 3/30

6:20 pm-3:05 pm

1 stop16h 45m

$1,195

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Mon 11/30

6:45 pm-4:00 pm

2 stops24h 15m

Buenos Aires Jorge Newbery

Wed 12/9

11:45 am-5:35 pm

2 stops26h 50m

$1,196

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 typical for flights on this route.

Typical prices usually range from $1,145 to $1,534.
The lowest price recently found on this route was $1,153.

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 $1,143, 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 $1,226.

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 $1,385 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 $1,138 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 September 2026, prices for London Heathrow Airport to Buenos Aires flights are approximately 34% 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

$660

Fastest flight time

16h 25m

Direct flights

None
The best one-way flight to Buenos Aires from London Heathrow Airport in the past 72 hours is $660. The best round-trip flight deal from London Heathrow Airport to Buenos Aires found on momondo in the last 72 hours is $1,153.
The fastest flight from London Heathrow Airport to Buenos Aires takes 16h 25m
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

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 25m.

  • 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