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Cheap flights from London Heathrow Airport to Buenos Aires from $617

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Buenos Aires departing on 1/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
9:45 pm - 10:45 am
LHR
-
EZE
17h 00m
1 stop
British Airways Logo
12:25 pm - 8:10 am
EZE
-
LHR
15h 45m
1 stop
$1,093British Airways
Wed, May 6 - Wed, May 20
Turkish Airlines Logo
7:55 pm - 10:25 pm
LHR
-
EZE
29h 30m
2 stops
Turkish Airlines Logo
11:55 pm - 2:55 pm
EZE
-
LHR
36h 00m
2 stops
$1,096Turkish Airlines
Wed, Mar 11 - Tue, Mar 24
Turkish Airlines Logo
4:35 pm - 10:25 pm
LHR
-
EZE
32h 50m
2 stops
Turkish Airlines Logo
11:55 pm - 10:25 pm
EZE
-
LHR
43h 30m
2 stops
$1,097Turkish Airlines
Wed, Mar 4 - Wed, Mar 18
Air Canada Logo
5:40 pm - 2:30 pm
LHR
-
EZE
48h 50m
3 stops
Air Canada Logo
4:35 pm - 6:35 am
EZE
-
LHR
34h 00m
3 stops
$1,099Air Canada
Mon, May 4 - Mon, May 18
Lufthansa Logo
3:30 pm - 6:25 am
LHR
-
EZE
18h 55m
1 stop
Lufthansa Logo
4:35 pm - 10:10 pm
EZE
-
LHR
25h 35m
1 stop
$1,100Lufthansa
Fri, May 15 - Mon, Jun 1
Multiple Airlines Logo
5:15 pm - 10:50 am
LHR
-
EZE
21h 35m
2 stops
Multiple Airlines Logo
4:35 pm - 2:40 pm
EZE
-
LHR
18h 05m
1 stop
$1,101Multiple Airlines
Fri, May 15 - Fri, Jun 19
SWISS Logo
8:05 pm - 9:40 am
LHR
-
AEP
41h 35m
2 stops
SWISS Logo
2:55 pm - 1:00 pm
AEP
-
LHR
18h 05m
2 stops
$1,102SWISS
Sat, May 16 - Wed, Jun 17
Avianca Logo
9:40 pm - 3:50 pm
LHR
-
EZE
21h 10m
1 stop
Avianca Logo
4:55 pm - 2:35 pm
EZE
-
LHR
18h 40m
1 stop
$1,108Avianca
Sat, Mar 7 - Sun, Mar 22
Multiple Airlines Logo
6:40 pm - 11:50 am
LHR
-
EZE
20h 10m
2 stops
Multiple Airlines Logo
5:45 pm - 6:45 pm
EZE
-
LHR
22h 00m
1 stop
$1,114Multiple Airlines
Fri, Mar 6 - Tue, Mar 17
SWISS Logo
8:05 pm - 9:40 am
LHR
-
AEP
41h 35m
2 stops
SWISS Logo
2:55 pm - 1:00 pm
AEP
-
LHR
18h 05m
2 stops
$1,122SWISS
Thu, May 14 - Wed, Jun 17

American Airlines flights from London Heathrow Airport to Buenos Aires

Our best American Airlines deals on London Heathrow Airport to Buenos Aires flight tickets
American Airlines
Feb 5
LHR4:25 pmLondon Heathrow
21h 15m
1 stop
EZE10:40 amBuenos Aires Ministro Pistarini
Feb 23
EZE8:45 pmBuenos Aires Ministro Pistarini
22h 25m
1 stop
LHR10:10 pmLondon Heathrow
$1,178
American Airlines
Jan 29
LHR3:35 pmLondon Heathrow
22h 05m
1 stop
EZE10:40 amBuenos Aires Ministro Pistarini
Feb 7
EZE11:59 pmBuenos Aires Ministro Pistarini
29h 36m
1 stop
LHR8:35 amLondon Heathrow
$1,181
American Airlines
Jan 25
LHR12:10 pmLondon Heathrow
22h 00m
1 stop
EZE7:10 amBuenos Aires Ministro Pistarini
Feb 10
EZE10:10 amBuenos Aires Ministro Pistarini
22h 50m
2 stops
LHR12:00 pmLondon Heathrow
$1,183

Turkish Airlines flights from London Heathrow Airport to Buenos Aires

Our best Turkish Airlines deals on London Heathrow Airport to Buenos Aires flight tickets
Turkish Airlines
Mar 11
LHR7:55 pmLondon Heathrow
29h 30m
2 stops
EZE10:25 pmBuenos Aires Ministro Pistarini
Mar 24
EZE11:55 pmBuenos Aires Ministro Pistarini
36h 00m
2 stops
LHR2:55 pmLondon Heathrow
$1,096
Turkish Airlines
Mar 4
LHR4:35 pmLondon Heathrow
32h 50m
2 stops
EZE10:25 pmBuenos Aires Ministro Pistarini
Mar 18
EZE11:55 pmBuenos Aires Ministro Pistarini
43h 30m
2 stops
LHR10:25 pmLondon Heathrow
$1,097
Turkish Airlines
Mar 15
LHR6:35 amLondon Heathrow
42h 50m
2 stops
EZE10:25 pmBuenos Aires Ministro Pistarini
Mar 29
EZE11:55 pmBuenos Aires Ministro Pistarini
35h 15m
2 stops
LHR3:10 pmLondon Heathrow
$1,115

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated January 15, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 5/6

9:45 pm-10:45 am

1 stop17h 00m

Buenos Aires Ministro Pistarini

Wed 5/20

12:25 pm-8:10 am

1 stop15h 45m

$1,093

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 3/11

7:55 pm-10:25 pm

2 stops29h 30m

Buenos Aires Ministro Pistarini

Tue 3/24

11:55 pm-2:55 pm

2 stops36h 00m

$1,096

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 3/4

4:35 pm-10:25 pm

2 stops32h 50m

Buenos Aires Ministro Pistarini

Wed 3/18

11:55 pm-10:25 pm

2 stops43h 30m

$1,097

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 5/4

5:40 pm-2:30 pm

3 stops48h 50m

Buenos Aires Ministro Pistarini

Mon 5/18

4:35 pm-6:35 am

3 stops34h 00m

$1,099

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 5/15

3:30 pm-6:25 am

1 stop18h 55m

Buenos Aires Ministro Pistarini

Mon 6/1

4:35 pm-10:10 pm

1 stop25h 35m

$1,100

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 5/15

5:15 pm-10:50 am

2 stops21h 35m

Buenos Aires Ministro Pistarini

Fri 6/19

4:35 pm-2:40 pm

1 stop18h 05m

$1,101

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sat 5/16

8:05 pm-9:40 am

2 stops41h 35m

Buenos Aires Jorge Newbery

Wed 6/17

2:55 pm-1:00 pm

2 stops18h 05m

$1,102

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 3/7

9:40 pm-3:50 pm

1 stop21h 10m

Buenos Aires Ministro Pistarini

Sun 3/22

4:55 pm-2:35 pm

1 stop18h 40m

$1,108

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 3/6

6:40 pm-11:50 am

2 stops20h 10m

Buenos Aires Ministro Pistarini

Tue 3/17

5:45 pm-6:45 pm

1 stop22h 00m

$1,114

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Thu 5/14

8:05 pm-9:40 am

2 stops41h 35m

Buenos Aires Jorge Newbery

Wed 6/17

2:55 pm-1:00 pm

2 stops18h 05m

$1,122

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 cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from London Heathrow Airport is in February. Flight prices, which tend to average around $1,194, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Buenos Aires from London Heathrow Airport during September instead. Flights to Buenos Aires in September, while not as cheap as those in February, still average around $1,215.

What is the cheapest London Heathrow to Buenos Aires flight route?

Fly from London Heathrow to Buenos Aires Ministro Pistarini for the best London Heathrow - Buenos Aires flight prices

How far in advance should I book a flight 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 $1,383 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 $1,156 on momondo.

What cabin class options are available on London Heathrow to Buenos Aires flights?

There is only 1 cabin class available to choose from on London Heathrow to Buenos Aires flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 31% 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 January 2026, prices for London Heathrow Airport to Buenos Aires flights are approximately 8% 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

Fastest flight time

18h 25m

Direct flights

Tue

Airports in Buenos Aires

2 airports
The fastest flight from London Heathrow Airport to Buenos Aires takes 18h 25m
Direct flights go from London Heathrow Airport to Buenos Aires on Tuesday. 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

  • 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 18h 25m.

  • 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

Airports listed have a maximum distance of 17.0 mi from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport