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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.
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
$1,152Avianca
Wed, Oct 14 - Wed, Oct 21
Avianca Logo
10:05 pm - 5:40 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
35h 35m1 stop Bogotá El Dorado
Avianca Logo
1:35 am - 3:35 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
34h 00m1 stop Bogotá El Dorado
$1,152Avianca
Wed, Oct 14 - Tue, Oct 20
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
$1,170Avianca
Sat, Oct 10 - Fri, Oct 23
Avianca Logo
10:05 pm - 5:40 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
35h 35m1 stop Bogotá El Dorado
Avianca Logo
7:10 am - 3:35 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 25m1 stop Bogotá El Dorado
$1,171Avianca
Tue, Oct 13 - Tue, Oct 20
Avianca Logo
9:35 pm - 5:40 amLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
35h 05m1 stop Bogotá El Dorado
Avianca Logo
7:05 am - 2:35 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
28h 30m1 stop Bogotá El Dorado
$1,175Avianca
Mon, Nov 23 - Fri, Feb 12
Avianca Logo
9:35 pm - 3:40 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
21h 05m1 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
$1,175Avianca
Mon, Nov 23 - Fri, Feb 12
Avianca Logo
10:05 pm - 5:40 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
35h 35m1 stop Bogotá El Dorado
Avianca Logo
7:10 am - 3:35 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 25m1 stop Bogotá El Dorado
$1,177Avianca
Sat, Oct 3 - Mon, Oct 12
Avianca Logo
9:35 pm - 12:30 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
29h 55m1 stop Bogotá El Dorado
Avianca Logo
4:50 pm - 2:35 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
18h 45m1 stop Bogotá El Dorado
$1,178Avianca
Sat, Nov 14 - Wed, Dec 2
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
$1,179Avianca
Wed, Oct 28 - Thu, Nov 26
Avianca Logo
10:05 pm - 5:40 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
35h 35m1 stop Bogotá El Dorado
Avianca Logo
7:10 am - 3:35 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 25m1 stop Bogotá El Dorado
$1,179Avianca
Tue, Oct 6 - Thu, Oct 15

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LATAM Airlines flights from London Heathrow Airport to Buenos Aires

Our best LATAM Airlines deals on London Heathrow Airport to Buenos Aires flight tickets
LATAM Airlines
Feb 17
LHR6:15 amLondon Heathrow
31h 25m
2 stops
EZE10:40 amBuenos Aires Ministro Pistarini
Mar 12
EZE12:20 pmBuenos Aires Ministro Pistarini
24h 05m
2 stops
LHR3:25 pmLondon Heathrow
$1,216
LATAM Airlines
Feb 19
LHR6:15 amLondon Heathrow
27h 05m
2 stops
EZE6:20 amBuenos Aires Ministro Pistarini
Mar 8
EZE7:20 amBuenos Aires Ministro Pistarini
32h 30m
2 stops
LHR6:50 pmLondon Heathrow
$1,220
LATAM Airlines
Feb 19
LHR6:15 amLondon Heathrow
27h 05m
2 stops
EZE6:20 amBuenos Aires Ministro Pistarini
Mar 7
EZE5:00 pmBuenos Aires Ministro Pistarini
18h 05m
1 stop
LHR2:05 pmLondon Heathrow
$1,231

ITA Airways flights from London Heathrow Airport to Buenos Aires

Our best ITA Airways deals on London Heathrow Airport to Buenos Aires flight tickets
ITA Airways
Nov 25
LHR10:30 amLondon Heathrow
25h 20m
1 stop
EZE8:50 amBuenos Aires Ministro Pistarini
Nov 29
EZE1:55 pmBuenos Aires Ministro Pistarini
22h 45m
1 stop
LHR3:40 pmLondon Heathrow
$1,212
ITA Airways
Nov 25
LHR10:30 amLondon Heathrow
25h 20m
1 stop
EZE8:50 amBuenos Aires Ministro Pistarini
Nov 29
EZE1:55 pmBuenos Aires Ministro Pistarini
22h 45m
1 stop
LHR3:40 pmLondon Heathrow
$1,215
ITA Airways
Nov 21
LHR4:30 pmLondon Heathrow
30h 25m
1 stop
EZE7:55 pmBuenos Aires Ministro Pistarini
Dec 8
EZE1:55 pmBuenos Aires Ministro Pistarini
22h 45m
1 stop
LHR3:40 pmLondon Heathrow
$1,217

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 - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Wed 10/14

10:05 pm-5:40 am

1 stop35h 35m

Buenos Aires Jorge Newbery

Wed 10/21

7:00 am-3:35 pm

1 stop28h 35m

$1,152

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Wed 10/14

10:05 pm-5:40 am

1 stop35h 35m

Buenos Aires Ministro Pistarini

Tue 10/20

1:35 am-3:35 pm

1 stop34h 00m

$1,152

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Sat 10/10

10:05 pm-5:40 am

1 stop35h 35m

Buenos Aires Jorge Newbery

Fri 10/23

7:00 am-3:35 pm

1 stop28h 35m

$1,170

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 10/13

10:05 pm-5:40 am

1 stop35h 35m

Buenos Aires Ministro Pistarini

Tue 10/20

7:10 am-3:35 pm

1 stop28h 25m

$1,171

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Mon 11/23

9:35 pm-5:40 am

1 stop35h 05m

Buenos Aires Jorge Newbery

Fri 2/12

7:05 am-2:35 pm

1 stop28h 30m

$1,175

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 11/23

9:35 pm-3:40 pm

1 stop21h 05m

Buenos Aires Ministro Pistarini

Fri 2/12

1:40 am-2:35 pm

1 stop33h 55m

$1,175

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 10/3

10:05 pm-5:40 am

1 stop35h 35m

Buenos Aires Ministro Pistarini

Mon 10/12

7:10 am-3:35 pm

1 stop28h 25m

$1,177
Quickest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 11/14

9:35 pm-12:30 am

1 stop29h 55m

Buenos Aires Ministro Pistarini

Wed 12/2

4:50 pm-2:35 pm

1 stop18h 45m

$1,178

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Wed 10/28

9:35 pm-5:40 am

1 stop35h 05m

Buenos Aires Jorge Newbery

Thu 11/26

7:05 am-2:35 pm

1 stop28h 30m

$1,179

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 10/6

10:05 pm-5:40 am

1 stop35h 35m

Buenos Aires Ministro Pistarini

Thu 10/15

7:10 am-3:35 pm

1 stop28h 25m

$1,179

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 $1,512.
The lowest price recently found on this route was $1,152.

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 $1,227.

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 $1,138 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

$660

Fastest flight time

16h 10m

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 $1,152.
The fastest flight from London Heathrow Airport to Buenos Aires takes 16h 10m
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 10m.

  • 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