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Cheap flights from London Heathrow Airport to Buenos Aires from $1,046

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 3/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London Heathrow Airport to Buenos Aires

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
16:30 - 19:50
LHR
-
EZE
30h 20m
1 stop
Multiple Airlines Logo
14:40 - 16:20
EZE
-
LHR
22h 40m
2 stops
$1,701Multiple Airlines
Mon, 16 Nov - Wed, 25 Nov
Multiple Airlines Logo
16:30 - 19:50
LHR
-
EZE
30h 20m
1 stop
Multiple Airlines Logo
14:40 - 16:20
EZE
-
LHR
22h 40m
2 stops
$1,702Multiple Airlines
Mon, 16 Nov - Wed, 25 Nov
LATAM Airlines Logo
06:15 - 06:20
LHR
-
EZE
27h 05m
2 stops
LATAM Airlines Logo
17:00 - 14:05
EZE
-
LHR
18h 05m
1 stop
$1,705LATAM Airlines
Wed, 18 Nov - Wed, 25 Nov
Avianca Logo
22:05 - 15:40
LHR
-
EZE
21h 35m
1 stop
Avianca Logo
16:50 - 15:35
EZE
-
LHR
18h 45m
1 stop
$1,719Avianca
Fri, 14 Aug - Fri, 21 Aug
Lufthansa Logo
15:30 - 06:25
LHR
-
EZE
18h 55m
1 stop
Lufthansa Logo
16:35 - 14:40
EZE
-
LHR
18h 05m
1 stop
$1,721Lufthansa
Mon, 24 Aug - Tue, 29 Sep
British Airways Logo
20:00 - 16:05
LHR
-
EZE
24h 05m
1 stop
British Airways Logo
17:50 - 14:55
EZE
-
LHR
17h 05m
1 stop
$1,727British Airways
Fri, 21 Aug - Mon, 28 Sep
British Airways Logo
20:00 - 16:05
LHR
-
EZE
24h 05m
1 stop
British Airways Logo
17:50 - 16:20
EZE
-
LHR
18h 30m
1 stop
$1,728British Airways
Fri, 21 Aug - Wed, 30 Sep
SWISS Logo
18:40 - 10:50
LHR
-
EZE
20h 10m
2 stops
SWISS Logo
13:30 - 13:00
EZE
-
LHR
19h 30m
2 stops
$1,735SWISS
Tue, 25 Aug - Wed, 30 Sep
American Airlines Logo
09:55 - 07:15
LHR
-
EZE
25h 20m
1 stop
American Airlines Logo
20:45 - 09:00
EZE
-
LHR
32h 15m
1 stop
$1,738American Airlines
Mon, 28 Sep - Fri, 2 Oct
SWISS Logo
18:40 - 10:50
LHR
-
EZE
20h 10m
2 stops
SWISS Logo
13:30 - 13:00
EZE
-
LHR
19h 30m
2 stops
$1,745SWISS
Tue, 25 Aug - Wed, 30 Sep

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Delta flights from London Heathrow Airport to Buenos Aires

Our best Delta deals on London Heathrow Airport to Buenos Aires flight tickets
Delta
15 Nov
LHR16:10London Heathrow
21h 45m
1 stop
EZE10:55Buenos Aires Ministro Pistarini
23 Nov
EZE23:35Buenos Aires Ministro Pistarini
29h 30m
2 stops
LHR08:05London Heathrow
$1,795
Delta
2 Sept
LHR09:40London Heathrow
28h 05m
2 stops
EZE09:45Buenos Aires Ministro Pistarini
14 Sept
EZE20:10Buenos Aires Ministro Pistarini
30h 15m
1 stop
LHR06:25London Heathrow
$1,799
Delta
17 Aug
LHR13:25London Heathrow
24h 20m
1 stop
EZE09:45Buenos Aires Ministro Pistarini
26 Aug
EZE20:10Buenos Aires Ministro Pistarini
30h 15m
1 stop
LHR06:25London Heathrow
$1,800

TAP AIR PORTUGAL flights from London Heathrow Airport to Buenos Aires

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Buenos Aires flight tickets
TAP AIR PORTUGAL
11 Sept
LHR08:00London Heathrow
32h 25m
2 stops
EZE12:25Buenos Aires Ministro Pistarini
25 Sept
EZE13:15Buenos Aires Ministro Pistarini
25h 35m
2 stops
LHR18:50London Heathrow
$1,758
TAP AIR PORTUGAL
16 Nov
LHR06:00London Heathrow
34h 00m
2 stops
EZE13:00Buenos Aires Ministro Pistarini
8 Dec
EZE14:00Buenos Aires Ministro Pistarini
42h 25m
2 stops
LHR11:25London Heathrow
$1,761
TAP AIR PORTUGAL
16 Nov
LHR08:15London Heathrow
31h 45m
2 stops
EZE13:00Buenos Aires Ministro Pistarini
25 Nov
EZE14:00Buenos Aires Ministro Pistarini
28h 35m
2 stops
LHR21:35London Heathrow
$1,763

momondo Fare Finder

 
Customise 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 78,305 searches. Data last updated 3 July 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

Cheapest return flight

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 16/11

16:30-19:50

1 stop30h 20m

Buenos Aires Ministro Pistarini

Wed 25/11

14:40-16:20

2 stops22h 40m

$1,701

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 16/11

16:30-19:50

1 stop30h 20m

Buenos Aires Ministro Pistarini

Wed 25/11

14:40-16:20

2 stops22h 40m

$1,702

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 18/11

06:15-06:20

2 stops27h 05m

Buenos Aires Ministro Pistarini

Wed 25/11

17:00-14:05

1 stop18h 05m

$1,705

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 14/8

22:05-15:40

1 stop21h 35m

Buenos Aires Ministro Pistarini

Fri 21/8

16:50-15:35

1 stop18h 45m

$1,719
Fastest return journey

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 24/8

15:30-06:25

1 stop18h 55m

Buenos Aires Ministro Pistarini

Tue 29/9

16:35-14:40

1 stop18h 05m

$1,721

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 21/8

20:00-16:05

1 stop24h 05m

Buenos Aires Ministro Pistarini

Mon 28/9

17:50-14:55

1 stop17h 05m

$1,727

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 21/8

20:00-16:05

1 stop24h 05m

Buenos Aires Ministro Pistarini

Wed 30/9

17:50-16:20

1 stop18h 30m

$1,728

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 25/8

18:40-10:50

2 stops20h 10m

Buenos Aires Ministro Pistarini

Wed 30/9

13:30-13:00

2 stops19h 30m

$1,735

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 28/9

09:55-07:15

1 stop25h 20m

Buenos Aires Ministro Pistarini

Fri 2/10

20:45-09:00

1 stop32h 15m

$1,738

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 25/8

18:40-10:50

2 stops20h 10m

Buenos Aires Ministro Pistarini

Wed 30/9

13:30-13:00

2 stops19h 30m

$1,745

Flights are sorted by cheapest return 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?

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from London Heathrow Airport is in July. Flight prices, which tend to average around $229, are often lower during this time because this is during the off-season. If you don’t want to visit Buenos Aires in July, then you should wait until March to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $334.

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 $2,039 when searching weeks before you fly. 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 $1,496 on momondo.

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

As of July 2026, prices for London Heathrow Airport to Buenos Aires flights are approximately 9% 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 return 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

19h 45m

Direct flights

None
The fastest flight from London Heathrow Airport to Buenos Aires takes 19h 45m
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?

    London Heathrow and Buenos Aires are 11101.7 km apart from one another. Typically, this will take 19h 45m by plane in normal conditions.

  • 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?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check 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 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 licence, 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 Heathrow Airport to Buenos Aires?

Why use momondo?

Why should I use momondo to find a flight deal from London to Buenos Aires?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Buenos Aires for you.

Can I find flights from London to Buenos Aires with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Buenos Aires from London with this policy.

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?

Of course. momondo tracks the price of London to Buenos Aires flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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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 27.4 km from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport