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Cheap flights from London Heathrow Airport to Buenos Aires from $605

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.
Lufthansa Logo
1:50 pm - 8:50 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
22h 00m2 stops Munich Franz Josef Strauss Rome Fiumicino
Lufthansa Logo
10:20 pm - 10:20 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
21h 00m2 stops Rome Fiumicino Frankfurt am Main
$1,165Lufthansa
Fri, Dec 4 - Sun, Dec 13
LEVEL Logo
9:55 am - 5:30 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
34h 35m1 stop Barcelona-El Prat
LEVEL Logo
7:15 pm - 8:05 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
21h 50m1 stop Barcelona-El Prat
$1,168LEVEL
Thu, Feb 18 - Thu, Feb 25
LEVEL Logo
8:50 pm - 5:30 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
23h 40m1 stop Barcelona-El Prat
LEVEL Logo
7:15 pm - 9:10 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
34h 55m1 stop Barcelona-El Prat
$1,173LEVEL
Fri, Mar 5 - Sun, Mar 14
LEVEL Logo
8:50 pm - 11:10 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
17h 20m1 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
$1,174LEVEL
Tue, Feb 23 - Wed, Mar 3
Multiple Airlines Logo
1:30 pm - 8:50 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
22h 20m2 stops Frankfurt am Main Rome Fiumicino
Multiple Airlines Logo
2:40 pm - 1:00 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
19h 20m2 stops Sao Paulo Guarulhos Intl Zurich
$1,178Multiple Airlines
Tue, Dec 1 - Wed, Dec 2
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
$1,181Avianca
Mon, Sep 21 - Mon, Oct 5
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
$1,181Avianca
Mon, Sep 21 - Sun, Oct 4
Avianca Logo
9:35 pm - 3:40 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
21h 05m1 stop Bogotá El Dorado
Avianca Logo
7:25 am - 2:35 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 10m1 stop Bogotá El Dorado
$1,194Avianca
Sun, Nov 29 - Tue, Feb 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
$1,196Avianca
Thu, Feb 11 - Thu, Mar 4
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
$1,199LEVEL
Tue, Jan 26 - Tue, Feb 9

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Iberia flights from London Heathrow Airport to Buenos Aires

Our best Iberia deals on London Heathrow Airport to Buenos Aires flight tickets
Iberia
Mar 4
LHR8:50 pmLondon Heathrow
17h 20m
1 stop
EZE11:10 amBuenos Aires Ministro Pistarini
Mar 13
EZE7:15 pmBuenos Aires Ministro Pistarini
21h 20m
1 stop
LHR7:35 pmLondon Heathrow
$1,200
Iberia
Dec 4
LHR7:05 pmLondon Heathrow
25h 20m
1 stop
EZE5:25 pmBuenos Aires Ministro Pistarini
Dec 13
EZE1:50 pmBuenos Aires Ministro Pistarini
15h 35m
1 stop
LHR8:25 amLondon Heathrow
$1,203
Iberia
Jan 31
LHR7:30 amLondon Heathrow
16h 25m
1 stop
EZE8:55 pmBuenos Aires Ministro Pistarini
Feb 16
EZE1:50 pmBuenos Aires Ministro Pistarini
15h 35m
1 stop
LHR8:25 amLondon Heathrow
$1,230

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
Feb 27
LHR7:05 pmLondon Heathrow
25h 20m
1 stop
EZE5:25 pmBuenos Aires Ministro Pistarini
Mar 11
EZE2:20 pmBuenos Aires Ministro Pistarini
15h 05m
1 stop
LHR8:25 amLondon Heathrow
$1,235
British Airways
Feb 22
LHR6:45 pmLondon Heathrow
25h 40m
1 stop
EZE5:25 pmBuenos Aires Ministro Pistarini
Mar 11
EZE2:20 pmBuenos Aires Ministro Pistarini
15h 05m
1 stop
LHR8:25 amLondon Heathrow
$1,237
British Airways
Feb 22
LHR6:45 pmLondon Heathrow
25h 40m
1 stop
EZE5:25 pmBuenos Aires Ministro Pistarini
Mar 3
EZE2:20 pmBuenos Aires Ministro Pistarini
15h 05m
1 stop
LHR8:25 amLondon Heathrow
$1,238

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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Cheapest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 12/4

1:50 pm-8:50 am

2 stops22h 00m

Buenos Aires Ministro Pistarini

Sun 12/13

10:20 pm-10:20 pm

2 stops21h 00m

$1,165

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Thu 2/18

9:55 am-5:30 pm

1 stop34h 35m

Buenos Aires Ministro Pistarini

Thu 2/25

7:15 pm-8:05 pm

1 stop21h 50m

$1,168

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 3/5

8:50 pm-5:30 pm

1 stop23h 40m

Buenos Aires Ministro Pistarini

Sun 3/14

7:15 pm-9:10 am

1 stop34h 55m

$1,173
Quickest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 2/23

8:50 pm-11:10 am

1 stop17h 20m

Buenos Aires Ministro Pistarini

Wed 3/3

1:00 pm-9:10 am

1 stop17h 10m

$1,174

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 12/1

1:30 pm-8:50 am

2 stops22h 20m

Buenos Aires Ministro Pistarini

Wed 12/2

2:40 pm-1:00 pm

2 stops19h 20m

$1,178

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Mon 9/21

10:05 pm-5:40 am

1 stop35h 35m

Buenos Aires Jorge Newbery

Mon 10/5

7:00 am-3:35 pm

1 stop28h 35m

$1,181

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 9/21

10:05 pm-5:40 am

1 stop35h 35m

Buenos Aires Ministro Pistarini

Sun 10/4

1:35 am-3:35 pm

1 stop34h 00m

$1,181

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 11/29

9:35 pm-3:40 pm

1 stop21h 05m

Buenos Aires Ministro Pistarini

Tue 2/2

7:25 am-2:35 pm

1 stop28h 10m

$1,194

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Thu 2/11

9:35 pm-5:40 am

1 stop35h 05m

Buenos Aires Jorge Newbery

Thu 3/4

7:05 am-2:35 pm

1 stop28h 30m

$1,196

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 2/9

1:00 pm-9:10 am

1 stop17h 10m

$1,199

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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 $1,513.
The lowest price recently found on this route was $1,165.

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 $1,217.

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 $1,206 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

$605

Fastest flight time

23h 20m

Direct flights

None
The best one-way flight to Buenos Aires from London Heathrow Airport in the past 72 hours is $605. The best round-trip flight deal from London Heathrow Airport to Buenos Aires found on momondo in the last 72 hours is $1,165.
The fastest flight from London Heathrow Airport to Buenos Aires takes 23h 20m
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 23h 20m.

  • 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