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Cheap flights from London Heathrow Airport to Buenos Aires from $737

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
9:00 am - 3:05 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
33h 05m3 stops Zurich Toronto Pearson Intl Sao Paulo Guarulhos Intl
Air Canada Logo
4:50 pm - 7:10 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
35h 20m3 stops Sao Paulo Guarulhos Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
$1,289Air Canada
Tue, Mar 2 - Sat, Mar 20
Air Canada Logo
7:25 pm - 3:05 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
46h 40m3 stops Vienna Intl Toronto Pearson Intl Sao Paulo Guarulhos Intl
Air Canada Logo
4:50 pm - 7:10 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
59h 20m3 stops Sao Paulo Guarulhos Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
$1,294Air Canada
Wed, Feb 17 - Fri, Mar 12
United Airlines Logo
12:05 pm - 7:20 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
22h 15m1 stop 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
$1,295United Airlines
Sun, Nov 22 - Sun, Dec 6
United Airlines Logo
12:05 pm - 7:20 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
22h 15m1 stop Houston George Bush Intcntl
United Airlines Logo
10:05 pm - 5:55 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 50m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$1,296United Airlines
Mon, Nov 16 - Tue, Dec 8
Multiple Airlines Logo
3:45 pm - 10:30 amLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
21h 45m2 stops Madrid Barajas Sao Paulo Guarulhos Intl
Multiple Airlines Logo
9:45 pm - 2:05 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
37h 20m1 stop Sao Paulo Guarulhos Intl
$1,297Multiple Airlines
Tue, Mar 2 - Sat, Mar 20
United Airlines Logo
12:05 pm - 9:20 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
24h 15m1 stop Houston George Bush Intcntl
United Airlines Logo
10:05 pm - 5:55 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 50m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$1,297United Airlines
Mon, Nov 23 - Tue, Dec 8
United Airlines Logo
12:05 pm - 7:20 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
22h 15m1 stop Houston George Bush Intcntl
United Airlines Logo
10:05 pm - 5:55 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 50m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$1,298United Airlines
Thu, Dec 3 - Sun, Dec 6
British Airways Logo
10:00 pm - 11:45 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
16h 45mnonstop
British Airways Logo
1:35 pm - 8:20 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
15h 45mnonstop
$1,299British Airways
Fri, Nov 27 - Thu, Dec 3
United Airlines Logo
11:35 am - 7:20 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
46h 45m2 stops Denver Intl Houston George Bush Intcntl
United Airlines Logo
11:55 pm - 7:40 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 45m1 stop Houston George Bush Intcntl
$1,300United Airlines
Sat, Nov 21 - Sun, Dec 6
LATAM Airlines Logo
6:15 am - 6:20 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
27h 05m2 stops Madrid Barajas Lima J Chavez 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
$1,301LATAM Airlines
Fri, Nov 27 - Sun, Dec 6

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Avianca flights from London Heathrow Airport to Buenos Aires

Our best Avianca deals on London Heathrow Airport to Buenos Aires flight tickets
Avianca
Jan 27
LHR9:35 pmLondon Heathrow
35h 05m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Feb 14
AEP7:05 amBuenos Aires Jorge Newbery
28h 30m
1 stop
LHR2:35 pmLondon Heathrow
$1,347
Avianca
Nov 30
LHR9:35 pmLondon Heathrow
21h 05m
1 stop
EZE3:40 pmBuenos Aires Ministro Pistarini
Dec 7
EZE7:25 amBuenos Aires Ministro Pistarini
28h 10m
1 stop
LHR2:35 pmLondon Heathrow
$1,355
Avianca
Jan 1
LHR9:35 pmLondon Heathrow
21h 05m
1 stop
EZE3:40 pmBuenos Aires Ministro Pistarini
Jan 31
EZE4:50 pmBuenos Aires Ministro Pistarini
18h 45m
1 stop
LHR2:35 pmLondon Heathrow
$1,358

United Airlines flights from London Heathrow Airport to Buenos Aires

Our best United Airlines deals on London Heathrow Airport to Buenos Aires flight tickets
United Airlines
Nov 22
LHR12:05 pmLondon Heathrow
22h 15m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Dec 6
EZE11:55 pmBuenos Aires Ministro Pistarini
31h 20m
1 stop
LHR10:15 amLondon Heathrow
$1,295
United Airlines
Nov 16
LHR12:05 pmLondon Heathrow
22h 15m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Dec 8
EZE10:05 pmBuenos Aires Ministro Pistarini
28h 50m
2 stops
LHR5:55 amLondon Heathrow
$1,296
United Airlines
Nov 23
LHR12:05 pmLondon Heathrow
24h 15m
1 stop
EZE9:20 amBuenos Aires Ministro Pistarini
Dec 8
EZE10:05 pmBuenos Aires Ministro Pistarini
28h 50m
2 stops
LHR5:55 amLondon 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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Route

Depart

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Price

Cheapest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 3/2

9:00 am-3:05 pm

3 stops33h 05m

Buenos Aires Ministro Pistarini

Sat 3/20

4:50 pm-7:10 am

3 stops35h 20m

$1,289

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Wed 2/17

7:25 pm-3:05 pm

3 stops46h 40m

Buenos Aires Ministro Pistarini

Fri 3/12

4:50 pm-7:10 am

3 stops59h 20m

$1,294

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 11/22

12:05 pm-7:20 am

1 stop22h 15m

Buenos Aires Ministro Pistarini

Sun 12/6

11:55 pm-10:15 am

1 stop31h 20m

$1,295

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 11/16

12:05 pm-7:20 am

1 stop22h 15m

Buenos Aires Ministro Pistarini

Tue 12/8

10:05 pm-5:55 am

2 stops28h 50m

$1,296

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Tue 3/2

3:45 pm-10:30 am

2 stops21h 45m

Buenos Aires Jorge Newbery

Sat 3/20

9:45 pm-2:05 pm

1 stop37h 20m

$1,297

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 11/23

12:05 pm-9:20 am

1 stop24h 15m

Buenos Aires Ministro Pistarini

Tue 12/8

10:05 pm-5:55 am

2 stops28h 50m

$1,297

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Thu 12/3

12:05 pm-7:20 am

1 stop22h 15m

Buenos Aires Ministro Pistarini

Sun 12/6

10:05 pm-5:55 am

2 stops28h 50m

$1,298
Quickest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 11/27

10:00 pm-11:45 am

Nonstop16h 45m

Buenos Aires Ministro Pistarini

Thu 12/3

1:35 pm-8:20 am

Nonstop15h 45m

$1,299

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 11/21

11:35 am-7:20 am

2 stops46h 45m

Buenos Aires Ministro Pistarini

Sun 12/6

11:55 pm-7:40 am

1 stop28h 45m

$1,300

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 11/27

6:15 am-6:20 am

2 stops27h 05m

Buenos Aires Ministro Pistarini

Sun 12/6

2:05 am-5:35 pm

2 stops36h 30m

$1,301

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 $1,251 to $1,553.
The lowest price recently found on this route was $1,289.

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 $1,400 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 $1,273 on momondo.

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

You could potentially save up to 13% 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 November 2026, prices for London Heathrow Airport to Buenos Aires flights are approximately 16% 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

$737

Fastest flight time

14h 00m

Direct flights

Every day

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from London Heathrow Airport in the past 72 hours is $737. The best round-trip flight deal from London Heathrow Airport to Buenos Aires found on momondo in the last 72 hours is $1,289.
The fastest flight from London Heathrow Airport to Buenos Aires takes 14h 00m
Direct flights go from London Heathrow Airport to Buenos Aires every day.
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?

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