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Cheap flights from London to Buenos Aires from $735

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
1:00 pm - 3:05 pmLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
53h 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
59h 20m3 stops Sao Paulo Guarulhos Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
$1,287Air Canada
Wed, Feb 17 - Fri, Mar 12
TAP AIR PORTUGAL Logo
8:15 am - 12:40 pmLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
31h 25m2 stops Lisbon Humberto Delgado Sao Paulo Guarulhos Intl
TAP AIR PORTUGAL Logo
10:20 am - 5:30 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
28h 10m2 stops Rio de Janeiro–Galeão Intl Lisbon Humberto Delgado
$1,288TAP AIR PORTUGAL
Mon, Mar 1 - Mon, Mar 15
Multiple Airlines Logo
8:40 pm - 7:00 pmSTN  London Stansted-EZE Buenos Aires Ministro Pistarini
25h 20m1 stop Madrid Barajas
Multiple Airlines Logo
11:55 pm - 8:15 pmEZE  Buenos Aires Ministro Pistarini-STN London Stansted
17h 20m1 stop Madrid Barajas
$1,288Multiple Airlines
Mon, Nov 23 - Sun, Dec 6
LATAM Airlines Logo
8:15 pm - 10:30 amLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
17h 15m1 stop Sao Paulo Guarulhos Intl
LATAM Airlines Logo
3:50 pm - 6:15 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
23h 25m2 stops Santiago Arturo Merino Benitez Madrid Barajas
$1,293LATAM Airlines
Sun, Nov 22 - Mon, Dec 7
British Airways Logo
7:25 pm - 5:25 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
14h 00mnonstop
British Airways Logo
3:10 pm - 8:30 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
13h 20mnonstop
$1,294British Airways
Fri, Apr 9 - Sat, Apr 24
United Airlines Logo
1:35 pm - 7:20 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
44h 45m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
United Airlines Logo
11:55 pm - 6:40 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
27h 45m2 stops Houston George Bush Intcntl Washington, D.C. Dulles Intl
$1,295United Airlines
Tue, Nov 10 - Mon, Nov 23
LATAM Airlines Logo
8:15 pm - 10:30 amLHR  London Heathrow-AEP Buenos Aires Jorge Newbery
17h 15m1 stop Sao Paulo Guarulhos Intl
LATAM Airlines Logo
9:45 pm - 2:05 pmAEP  Buenos Aires Jorge Newbery-LHR London Heathrow
37h 20m1 stop Sao Paulo Guarulhos Intl
$1,296LATAM Airlines
Tue, Mar 2 - Sat, Mar 20
Multiple Airlines Logo
1:35 pm - 4:10 amSTN  London Stansted-EZE Buenos Aires Ministro Pistarini
17h 35m1 stop Madrid Barajas
Multiple Airlines Logo
11:55 pm - 11:20 pmEZE  Buenos Aires Ministro Pistarini-STN London Stansted
19h 25m1 stop Madrid Barajas
$1,296Multiple Airlines
Fri, Mar 12 - Sun, Mar 28
American Airlines Logo
11:15 am - 7:10 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
22h 55m1 stop Miami
American Airlines Logo
8:30 pm - 8:00 pmEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
20h 30m1 stop New York John F Kennedy Intl
$1,296American Airlines
Tue, Dec 29 - Fri, Jan 22
United Airlines Logo
10:00 am - 7:20 amLHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
24h 20m1 stop Houston George Bush Intcntl
United Airlines Logo
11:55 pm - 5:55 amEZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
27h 00m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$1,297United Airlines
Fri, Jan 22 - Thu, Feb 25

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American Airlines flights from London to Buenos Aires

Our best American Airlines deals on London to Buenos Aires flight tickets
American Airlines
Dec 3
LHR2:30 pmLondon Heathrow
20h 35m
1 stop
EZE8:05 amBuenos Aires Ministro Pistarini
Dec 22
EZE11:20 pmBuenos Aires Ministro Pistarini
28h 25m
1 stop
LHR6:45 amLondon Heathrow
$1,296
American Airlines
Dec 3
LHR2:30 pmLondon Heathrow
20h 35m
1 stop
EZE8:05 amBuenos Aires Ministro Pistarini
Dec 22
EZE11:20 pmBuenos Aires Ministro Pistarini
28h 25m
1 stop
LHR6:45 amLondon Heathrow
$1,298
American Airlines
Dec 3
LHR2:30 pmLondon Heathrow
20h 35m
1 stop
EZE8:05 amBuenos Aires Ministro Pistarini
Dec 22
EZE11:20 pmBuenos Aires Ministro Pistarini
28h 25m
1 stop
LHR6:45 amLondon Heathrow
$1,302

Iberia flights from London to Buenos Aires

Our best Iberia deals on London to Buenos Aires flight tickets
Iberia
Feb 12
LGW7:40 pmLondon Gatwick
24h 45m
1 stop
EZE5:25 pmBuenos Aires Ministro Pistarini
Feb 21
EZE1:00 pmBuenos Aires Ministro Pistarini
17h 20m
1 stop
LGW9:20 amLondon Gatwick
$1,305
Iberia
Jan 23
LHR7:30 amLondon Heathrow
16h 25m
1 stop
EZE8:55 pmBuenos Aires Ministro Pistarini
Feb 14
EZE1:00 pmBuenos Aires Ministro Pistarini
17h 10m
1 stop
LHR9:10 amLondon Heathrow
$1,309
Iberia
Feb 12
LCY7:40 amLondon City
16h 15m
1 stop
EZE8:55 pmBuenos Aires Ministro Pistarini
Feb 21
EZE7:10 pmBuenos Aires Ministro Pistarini
16h 05m
1 stop
LCY2:15 pmLondon City
$1,491

momondo Fare Finder

 
Use the filters below to find and compare flights from London to Buenos Aires that are best for you.

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Route

Depart

Return

Price

Cheapest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Wed 2/17

1:00 pm-3:05 pm

3 stops53h 05m

Buenos Aires Ministro Pistarini

Fri 3/12

4:50 pm-7:10 am

3 stops59h 20m

$1,287

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Mon 3/1

8:15 am-12:40 pm

2 stops31h 25m

Buenos Aires Jorge Newbery

Mon 3/15

10:20 am-5:30 pm

2 stops28h 10m

$1,288

LondonBuenos Aires

STN London Stansted - EZE Buenos Aires Ministro Pistarini

STNEZE

London Stansted

Mon 11/23

8:40 pm-7:00 pm

1 stop25h 20m

Buenos Aires Ministro Pistarini

Sun 12/6

11:55 pm-8:15 pm

1 stop17h 20m

$1,288

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Sun 11/22

8:15 pm-10:30 am

1 stop17h 15m

Buenos Aires Jorge Newbery

Mon 12/7

3:50 pm-6:15 pm

2 stops23h 25m

$1,293
Quickest round-trip

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 4/9

7:25 pm-5:25 am

Nonstop14h 00m

Buenos Aires Ministro Pistarini

Sat 4/24

3:10 pm-8:30 am

Nonstop13h 20m

$1,294

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 11/10

1:35 pm-7:20 am

2 stops44h 45m

Buenos Aires Ministro Pistarini

Mon 11/23

11:55 pm-6:40 am

2 stops27h 45m

$1,295

LondonBuenos Aires

LHR London Heathrow - AEP Buenos Aires Jorge Newbery

LHRAEP

London Heathrow

Tue 3/2

8:15 pm-10:30 am

1 stop17h 15m

Buenos Aires Jorge Newbery

Sat 3/20

9:45 pm-2:05 pm

1 stop37h 20m

$1,296

LondonBuenos Aires

STN London Stansted - EZE Buenos Aires Ministro Pistarini

STNEZE

London Stansted

Fri 3/12

1:35 pm-4:10 am

1 stop17h 35m

Buenos Aires Ministro Pistarini

Sun 3/28

11:55 pm-11:20 pm

1 stop19h 25m

$1,296

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Tue 12/29

11:15 am-7:10 am

1 stop22h 55m

Buenos Aires Ministro Pistarini

Fri 1/22

8:30 pm-8:00 pm

1 stop20h 30m

$1,296

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Fri 1/22

10:00 am-7:20 am

1 stop24h 20m

Buenos Aires Ministro Pistarini

Thu 2/25

11:55 pm-5:55 am

2 stops27h 00m

$1,297

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 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 and Buenos Aires?

Prices are currently typical for flights on this route.

Typical prices usually range from $1,208 to $1,580.
The lowest price recently found on this route was $1,287.

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from London is in May. Flight prices, which tend to average around $1,166, 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 during April instead. Flights to Buenos Aires in April, while not as cheap as those in May, still average around $1,246.

How far in advance should I book a flight from London to Buenos Aires?

You are more likely to see cheaper flights to Buenos Aires from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,395 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 for as low as $1,191 on momondo.

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

You could potentially save up to 13% on your flight if you consider stops on a London to Buenos Aires flight.

How have London to Buenos Aires flight prices changed over time?

As of October 2026, prices for London to Buenos Aires flights are approximately 16% cheaper when compared to flights at the same time last year.

When to book flights from London to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from London to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London to Buenos Aires (LON to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Buenos Aires

Best Price Found

$735

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 in the past 72 hours is $735. The best round-trip flight deal from London to Buenos Aires found on momondo in the last 72 hours is $1,287.
The fastest flight from London to Buenos Aires takes 14h 00m
Direct flights go from London to Buenos Aires every day.
There are 2 airports in Buenos Aires. From London there are direct flights to Buenos Aires Ministro Pistarini (EZE).
Search flight deals

Frequently asked questions about flying from London to Buenos Aires

  • How far is London to Buenos Aires by plane?

    Buenos Aires is 6909.8 mi away from London. A reasonable flight in good conditions will take 14h 00m.

  • When did momondo last update prices for flights from London to Buenos Aires?

    Prices for flights from London to Buenos Aires refresh daily.

  • How old do you have to be to fly from London to Buenos Aires?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The travel and health documents required for your trip to Buenos Aires can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buenos Aires. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from London to Buenos Aires?

  • What is the most popular airline from London 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?

All flight searches from London to Buenos Aires on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from London to Buenos Aires?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Buenos Aires.

I’m not ready to book a flight from London to Buenos Aires right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Buenos Aires, momondo offers a useful price alert feature which will track prices for flights to Buenos Aires from London and alert you when they change.

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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