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Cheap flights from London Heathrow Airport to Buenos Aires from $666

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.
Air Canada Logo
3:00 pm - 3:05 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
27h 05m2 stops Toronto Pearson Intl Sao Paulo Guarulhos Intl
Air Canada Logo
4:50 pm - 8:30 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
36h 40m2 stops Sao Paulo Guarulhos Intl Toronto Pearson Intl
$1,140Air Canada
Thu, Feb 11 - Thu, Mar 4
LEVEL Logo
8:50 pm - 5:30 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
23h 40m1 stop Barcelona-El Prat
LEVEL Logo
6:20 pm - 9:10 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
34h 50m1 stop Barcelona-El Prat
$1,153LEVEL
Mon, Feb 15 - Thu, Apr 15
LEVEL Logo
8:50 pm - 5:30 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
23h 40m1 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
$1,154LEVEL
Mon, Feb 15 - Mon, Mar 8
LEVEL Logo
8:50 pm - 6:00 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
24h 10m1 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
$1,175LEVEL
Tue, Jan 26 - Tue, Feb 23
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 - 9:10 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
17h 10m1 stop Barcelona-El Prat
$1,180LEVEL
Fri, Feb 19 - Sun, Feb 28
ITA Airways Logo
10:30 am - 7:55 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
36h 25m1 stop Rome Fiumicino
ITA Airways Logo
1:55 pm - 9:40 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
16h 45m1 stop Rome Fiumicino
$1,183ITA Airways
Sat, Nov 14 - Mon, Nov 30
Air Canada Logo
6:00 pm - 3:05 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
24h 05m2 stops Toronto Pearson Intl Sao Paulo Guarulhos Intl
Air Canada Logo
4:45 pm - 8:30 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
36h 45m2 stops Sao Paulo Guarulhos Intl Toronto Pearson Intl
$1,187Air Canada
Sat, Nov 14 - Mon, Nov 30
British Airways Logo
8:00 pm - 4:05 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
24h 05m1 stop Madrid Barajas
British Airways Logo
12:25 pm - 8:10 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
15h 45m1 stop Rio de Janeiro–Galeão Intl
$1,189British Airways
Wed, Sep 23 - Mon, Oct 12
British Airways Logo
8:00 pm - 4:05 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
24h 05m1 stop Madrid Barajas
British Airways Logo
12:25 pm - 8:10 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
15h 45m1 stop Rio de Janeiro–Galeão Intl
$1,190British Airways
Wed, Sep 23 - Mon, Oct 12
British Airways Logo
8:00 pm - 4:05 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
24h 05m1 stop Madrid Barajas
British Airways Logo
12:25 pm - 8:10 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
15h 45m1 stop Rio de Janeiro–Galeão Intl
$1,191British Airways
Wed, Sep 23 - Mon, Oct 12

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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 15
LHR8:50 pmLondon Heathrow
23h 40m
1 stop
EZE5:30 pmBuenos Aires Ministro Pistarini
Apr 15
EZE6:20 pmBuenos Aires Ministro Pistarini
34h 50m
1 stop
LHR9:10 amLondon Heathrow
$1,153
LEVEL
Feb 15
LHR8:50 pmLondon Heathrow
23h 40m
1 stop
EZE5:30 pmBuenos Aires Ministro Pistarini
Mar 8
EZE1:00 pmBuenos Aires Ministro Pistarini
17h 10m
1 stop
LHR9:10 amLondon Heathrow
$1,154
LEVEL
Jan 26
LHR8:50 pmLondon Heathrow
24h 10m
1 stop
EZE6:00 pmBuenos Aires Ministro Pistarini
Feb 23
EZE1:00 pmBuenos Aires Ministro Pistarini
17h 10m
1 stop
LHR9:10 amLondon Heathrow
$1,175

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
Sep 23
LHR8:00 pmLondon Heathrow
24h 05m
1 stop
EZE4:05 pmBuenos Aires Ministro Pistarini
Oct 12
EZE12:25 pmBuenos Aires Ministro Pistarini
15h 45m
1 stop
LHR8:10 amLondon Heathrow
$1,189
British Airways
Sep 23
LHR8:00 pmLondon Heathrow
24h 05m
1 stop
EZE4:05 pmBuenos Aires Ministro Pistarini
Oct 12
EZE12:25 pmBuenos Aires Ministro Pistarini
15h 45m
1 stop
LHR8:10 amLondon Heathrow
$1,190
British Airways
Sep 23
LHR8:00 pmLondon Heathrow
24h 05m
1 stop
EZE4:05 pmBuenos Aires Ministro Pistarini
Oct 12
EZE12:25 pmBuenos Aires Ministro Pistarini
15h 45m
1 stop
LHR8:10 amLondon Heathrow
$1,191

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 2/11

3:00 pm-3:05 pm

2 stops27h 05m

Buenos Aires Ministro Pistarini

Thu 3/4

4:50 pm-8:30 am

2 stops36h 40m

$1,140

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 2/15

8:50 pm-5:30 pm

1 stop23h 40m

Buenos Aires Ministro Pistarini

Thu 4/15

6:20 pm-9:10 am

1 stop34h 50m

$1,153

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 2/15

8:50 pm-5:30 pm

1 stop23h 40m

Buenos Aires Ministro Pistarini

Mon 3/8

1:00 pm-9:10 am

1 stop17h 10m

$1,154

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 1/26

8:50 pm-6:00 pm

1 stop24h 10m

Buenos Aires Ministro Pistarini

Tue 2/23

1:00 pm-9:10 am

1 stop17h 10m

$1,175

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 2/19

9:55 am-5:30 pm

1 stop34h 35m

Buenos Aires Ministro Pistarini

Sun 2/28

1:00 pm-9:10 am

1 stop17h 10m

$1,180

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 11/14

10:30 am-7:55 pm

1 stop36h 25m

Buenos Aires Ministro Pistarini

Mon 11/30

1:55 pm-9:40 am

1 stop16h 45m

$1,183

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 11/14

6:00 pm-3:05 pm

2 stops24h 05m

Buenos Aires Ministro Pistarini

Mon 11/30

4:45 pm-8:30 am

2 stops36h 45m

$1,187
Quickest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Wed 9/23

8:00 pm-4:05 pm

1 stop24h 05m

Buenos Aires Ministro Pistarini

Mon 10/12

12:25 pm-8:10 am

1 stop15h 45m

$1,189

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Wed 9/23

8:00 pm-4:05 pm

1 stop24h 05m

Buenos Aires Ministro Pistarini

Mon 10/12

12:25 pm-8:10 am

1 stop15h 45m

$1,190

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Wed 9/23

8:00 pm-4:05 pm

1 stop24h 05m

Buenos Aires Ministro Pistarini

Mon 10/12

12:25 pm-8:10 am

1 stop15h 45m

$1,191

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 $1,046 to $1,497.
The lowest price recently found on this route was $1,140.

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 $1,197.

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 $1,384 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 $1,206 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 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

$666

Fastest flight time

16h 15m

Direct flights

Tue, Wed and Sat

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from London Heathrow Airport in the past 72 hours is $666. The best round-trip flight deal from London Heathrow Airport to Buenos Aires found on momondo in the last 72 hours is $1,140.
The fastest flight from London Heathrow Airport to Buenos Aires takes 16h 15m
Direct flights go from London Heathrow Airport to Buenos Aires on Tuesday, Wednesday and Saturday. 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?

  • 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