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Cheap flights from London Heathrow Airport to Buenos Aires from $739

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.
British Airways Logo
7:05 pm - 5:25 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
25h 20m1 stop Madrid Barajas
British Airways Logo
3:10 pm - 8:30 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
13h 20mnonstop
$1,281British Airways
Sun, Mar 21 - Mon, Apr 5
Avianca Logo
9:35 pm - 5:40 amLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
35h 05m1 stop Bogotá El Dorado
Avianca Logo
7:05 am - 2:35 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
28h 30m1 stop Bogotá El Dorado
$1,281Avianca
Wed, Feb 24 - Sun, Mar 7
LATAM Airlines Logo
7:05 pm - 6:35 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
26h 30m2 stops Madrid Barajas Lima J Chavez Intl
LATAM Airlines Logo
2:55 pm - 2:25 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
20h 30m2 stops Florianopolis Hercilio Luz Sao Paulo Guarulhos Intl
$1,282LATAM Airlines
Tue, Feb 2 - Sun, Feb 28
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
8:05 pm - 2:25 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
15h 20m1 stop Sao Paulo Guarulhos Intl
$1,283LATAM Airlines
Tue, Feb 2 - Wed, Mar 3
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 - 6:30 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
34h 40m2 stops Sao Paulo Guarulhos Intl Toronto Pearson Intl
$1,284Air Canada
Fri, Feb 26 - Mon, Mar 15
TAP AIR PORTUGAL Logo
6:30 pm - 9:20 amLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
41h 50m3 stops Lisbon Humberto Delgado Curitiba Afonso Pena Rio de Janeiro–Galeão Intl
TAP AIR PORTUGAL Logo
1:35 pm - 5:30 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
24h 55m2 stops Sao Paulo Guarulhos Intl Lisbon Humberto Delgado
$1,285TAP AIR PORTUGAL
Mon, Feb 22 - Thu, Mar 11
United Airlines Logo
7:25 am - 8:00 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
28h 35m2 stops Munich Franz Josef Strauss Houston George Bush Intcntl
United Airlines Logo
9:00 pm - 11:35 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
34h 35m1 stop Houston George Bush Intcntl
$1,287United Airlines
Tue, Apr 6 - Thu, Apr 22
Air Canada Logo
1:00 pm - 3:05 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
29h 05m3 stops Montreal Pierre Elliott Trudeau Intl 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
Fri, Feb 26 - Mon, Mar 15
TAP AIR PORTUGAL Logo
6:30 pm - 9:20 amLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
41h 50m3 stops Lisbon Humberto Delgado Curitiba Afonso Pena Rio de Janeiro–Galeão Intl
TAP AIR PORTUGAL Logo
6:25 pm - 6:55 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
21h 30m2 stops Sao Paulo Guarulhos Intl Lisbon Humberto Delgado
$1,289TAP AIR PORTUGAL
Wed, Mar 3 - Sat, Mar 20
Avianca Logo
9:35 pm - 5:40 amLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
35h 05m1 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
$1,290Avianca
Mon, Mar 1 - Mon, Mar 29

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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 26
LHR3:00 pmLondon Heathrow
27h 05m
2 stops
EZE3:05 pmBuenos Aires Ministro Pistarini
Mar 15
EZE4:50 pmBuenos Aires Ministro Pistarini
34h 40m
2 stops
LHR6:30 amLondon Heathrow
$1,284
Air Canada
Feb 26
LHR1:00 pmLondon Heathrow
29h 05m
3 stops
EZE3:05 pmBuenos Aires Ministro Pistarini
Mar 15
EZE4:50 pmBuenos Aires Ministro Pistarini
35h 20m
3 stops
LHR7:10 amLondon Heathrow
$1,289
Air Canada
Mar 2
LHR3:00 pmLondon Heathrow
27h 05m
2 stops
EZE3:05 pmBuenos Aires Ministro Pistarini
Mar 20
EZE4:50 pmBuenos Aires Ministro Pistarini
35h 20m
3 stops
LHR7:10 amLondon Heathrow
$1,291

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
Apr 6
LHR7:25 amLondon Heathrow
28h 35m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
Apr 22
EZE9:00 pmBuenos Aires Ministro Pistarini
34h 35m
1 stop
LHR11:35 amLondon Heathrow
$1,287
United Airlines
Nov 16
LHR12:05 pmLondon Heathrow
24h 15m
1 stop
EZE9:20 amBuenos Aires Ministro Pistarini
Nov 22
EZE11:55 pmBuenos Aires Ministro Pistarini
27h 00m
2 stops
LHR5:55 amLondon Heathrow
$1,291
United Airlines
Nov 14
LHR10:00 amLondon Heathrow
24h 20m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Nov 21
EZE10:05 pmBuenos Aires Ministro Pistarini
30h 35m
1 stop
LHR7:40 amLondon Heathrow
$1,295

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

Return

Price

Cheapest round-trip
Quickest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 3/21

7:05 pm-5:25 pm

1 stop25h 20m

Buenos Aires Ministro Pistarini

Mon 4/5

3:10 pm-8:30 am

Nonstop13h 20m

$1,281

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Wed 2/24

9:35 pm-5:40 am

1 stop35h 05m

Buenos Aires Jorge Newbery

Sun 3/7

7:05 am-2:35 pm

1 stop28h 30m

$1,281

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 2/2

7:05 pm-6:35 pm

2 stops26h 30m

Buenos Aires Ministro Pistarini

Sun 2/28

2:55 pm-2:25 pm

2 stops20h 30m

$1,282

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Tue 2/2

6:45 pm-4:00 pm

2 stops24h 15m

Buenos Aires Jorge Newbery

Wed 3/3

8:05 pm-2:25 pm

1 stop15h 20m

$1,283

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 2/26

3:00 pm-3:05 pm

2 stops27h 05m

Buenos Aires Ministro Pistarini

Mon 3/15

4:50 pm-6:30 am

2 stops34h 40m

$1,284

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Mon 2/22

6:30 pm-9:20 am

3 stops41h 50m

Buenos Aires Jorge Newbery

Thu 3/11

1:35 pm-5:30 pm

2 stops24h 55m

$1,285

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 4/6

7:25 am-8:00 am

2 stops28h 35m

Buenos Aires Ministro Pistarini

Thu 4/22

9:00 pm-11:35 am

1 stop34h 35m

$1,287

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 2/26

1:00 pm-3:05 pm

3 stops29h 05m

Buenos Aires Ministro Pistarini

Mon 3/15

4:50 pm-7:10 am

3 stops35h 20m

$1,289

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Wed 3/3

6:30 pm-9:20 am

3 stops41h 50m

Buenos Aires Jorge Newbery

Sat 3/20

6:25 pm-6:55 pm

2 stops21h 30m

$1,289

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Mon 3/1

9:35 pm-5:40 am

1 stop35h 05m

Buenos Aires Jorge Newbery

Mon 3/29

7:00 am-3:35 pm

1 stop28h 35m

$1,290

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 $1,242 to $1,552.
The lowest price recently found on this route was $1,281.

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 $1,403 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

$739

Fastest flight time

14h 00m

Direct flights

Tue, Wed, 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 $739. The best round-trip flight deal from London Heathrow Airport to Buenos Aires found on momondo in the last 72 hours is $1,281.
The fastest flight from London Heathrow Airport to Buenos Aires takes 14h 00m
Direct flights go from London Heathrow Airport to Buenos Aires on Tuesday, Wednesday, 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?

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