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Cheap flights from London Heathrow Airport to Buenos Aires from £461

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 11/11. 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 return flights

Enter your travel dates to find the best prices.
Avianca Logo
22:05 - 00:10LHR-EZE
30h 05m1 stop
Avianca Logo
01:40 - 15:35EZE-LHR
33h 55m1 stop
£767Avianca
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Wed, 8 Apr - Mon, 13 Apr
Lufthansa Logo
12:05 - 07:20LHR-EZE
22h 15m1 stop
Lufthansa Logo
23:55 - 09:40EZE-LHR
30h 45m2 stops
£771Lufthansa
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Sun, 9 Nov - Mon, 24 Nov
United Airlines Logo
12:05 - 07:20LHR-EZE
22h 15m1 stop
United Airlines Logo
23:55 - 07:30EZE-LHR
28h 35m1 stop
£786United Airlines
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Mon, 10 Nov - Wed, 26 Nov
Air Canada Logo
18:00 - 15:10LHR-EZE
24h 10m2 stops
Air Canada Logo
16:35 - 11:50EZE-LHR
39h 15m2 stops
£805Air Canada
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Thu, 26 Mar - Wed, 15 Apr
Air Canada Logo
18:00 - 15:10LHR-EZE
24h 10m2 stops
Air Canada Logo
16:35 - 10:00EZE-LHR
37h 25m3 stops
£823Air Canada
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Tue, 24 Mar - Thu, 23 Apr
United Airlines Logo
12:05 - 07:20LHR-EZE
22h 15m1 stop
United Airlines Logo
22:05 - 05:55EZE-LHR
28h 50m2 stops
£838United Airlines
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Wed, 19 Nov - Thu, 4 Dec
Finnair Logo
11:55 - 08:10LHR-EZE
23h 15m1 stop
Finnair Logo
20:45 - 20:00EZE-LHR
20h 15m1 stop
£843Finnair
Find Deal
Thu, 13 Nov - Tue, 18 Nov
Finnair Logo
12:10 - 08:10LHR-EZE
23h 00m1 stop
Finnair Logo
22:25 - 06:50EZE-LHR
29h 25m1 stop
£844Finnair
Find Deal
Sun, 7 Dec - Thu, 15 Jan
LATAM Airlines Logo
18:45 - 16:00LHR-AEP
24h 15m2 stops
LATAM Airlines Logo
15:40 - 18:15AEP-LHR
23h 35m2 stops
£863LATAM Airlines
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Tue, 3 Mar - Fri, 13 Mar
LATAM Airlines Logo
20:15 - 14:00LHR-AEP
20h 45m1 stop
LATAM Airlines Logo
12:40 - 14:05AEP-LHR
22h 25m1 stop
£866LATAM Airlines
Find Deal
Tue, 25 Nov - Tue, 2 Dec

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
5 Nov
LHR16:35London Heathrow
56h 50m
2 stops
EZE22:25Buenos Aires Ministro Pistarini
22 Nov
EZE23:55Buenos Aires Ministro Pistarini
43h 30m
2 stops
LHR22:25London Heathrow
£820
Find similar
Turkish Airlines
4 Dec
LHR17:45London Heathrow
31h 40m
2 stops
EZE22:25Buenos Aires Ministro Pistarini
9 Dec
EZE23:55Buenos Aires Ministro Pistarini
31h 00m
2 stops
LHR09:55London Heathrow
£829
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Finnair flights from London Heathrow Airport to Buenos Aires

Our best Finnair deals on London Heathrow Airport to Buenos Aires flight tickets
Finnair
13 Nov
LHR11:55London Heathrow
23h 15m
1 stop
EZE08:10Buenos Aires Ministro Pistarini
18 Nov
EZE20:45Buenos Aires Ministro Pistarini
20h 15m
1 stop
LHR20:00London Heathrow
£843
Find similar
Finnair
7 Dec
LHR12:10London Heathrow
23h 00m
1 stop
EZE08:10Buenos Aires Ministro Pistarini
15 Jan
EZE22:25Buenos Aires Ministro Pistarini
29h 25m
1 stop
LHR06:50London Heathrow
£844
Find similar
Finnair
2 Nov
LHR08:20London Heathrow
26h 50m
1 stop
EZE08:10Buenos Aires Ministro Pistarini
10 Nov
EZE20:45Buenos Aires Ministro Pistarini
22h 25m
1 stop
LHR22:10London Heathrow
£846
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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 279,928 searches. Data last updated 29 October 2025.
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 8/4

22:05-00:10

1 stop30h 05m

Buenos Aires Ministro Pistarini

Mon 13/4

01:40-15:35

1 stop33h 55m

£767

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 9/11

12:05-07:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Mon 24/11

23:55-09:40

2 stops30h 45m

£771

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 10/11

12:05-07:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Wed 26/11

23:55-07:30

1 stop28h 35m

£786

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 26/3

18:00-15:10

2 stops24h 10m

Buenos Aires Ministro Pistarini

Wed 15/4

16:35-11:50

2 stops39h 15m

£805

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 24/3

18:00-15:10

2 stops24h 10m

Buenos Aires Ministro Pistarini

Thu 23/4

16:35-10:00

3 stops37h 25m

£823

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 19/11

12:05-07:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Thu 4/12

22:05-05:55

2 stops28h 50m

£838

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 13/11

11:55-08:10

1 stop23h 15m

Buenos Aires Ministro Pistarini

Tue 18/11

20:45-20:00

1 stop20h 15m

£843

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 7/12

12:10-08:10

1 stop23h 00m

Buenos Aires Ministro Pistarini

Thu 15/1

22:25-06:50

1 stop29h 25m

£844

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 3/3

18:45-16:00

2 stops24h 15m

Buenos Aires Jorge Newbery

Fri 13/3

15:40-18:15

2 stops23h 35m

£863

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 25/11

20:15-14:00

1 stop20h 45m

Buenos Aires Jorge Newbery

Tue 2/12

12:40-14:05

1 stop22h 25m

£866

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 cheapest month to fly to Buenos Aires?

In general, March is the cheapest month to fly from London Heathrow Airport to Buenos Aires. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £869. If you don’t want to visit Buenos Aires in March, then you should wait until February to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £884.

What is the cheapest day to depart on your flight to Buenos Aires?

The cheapest day to depart on your flight to Buenos Aires is on a Monday when prices can be found for as low as £998. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £1,171.

What is the cheapest time of day to depart on your flight to Buenos Aires?

Our most recent data shows that the best time of day to fly to Buenos Aires is in the afternoon. Flights from London Heathrow Airport to Buenos Aires during this time can be as low as £829. Flights to Buenos Aires are more costly in the evening, with an average ticket price of £1,075. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 £1,029 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 £873 on momondo.

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

There are 2 cabin classes 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 27% 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 October 2025, prices for London Heathrow Airport to Buenos Aires flights are approximately 19% 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

Best price found

£1,173

Fastest flight time

15h 35m

Direct flights

Every day

Airports in Buenos Aires

1 airport
The best flight deal from London Heathrow Airport to Buenos Aires found on momondo in the last 72 hours is £1,173
The fastest flight from London Heathrow Airport to Buenos Aires takes 15h 35m
Direct flights go from London Heathrow Airport to Buenos Aires every day.
There is 1 airport near Buenos Aires: Buenos Aires Ministro Pistarini (EZE)
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  • How far is London Heathrow to Buenos Aires by plane?

    Buenos Aires is 6898.3 mi away from London Heathrow. In terms of flight time, this usually takes a little over 16h 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 many operators does momondo search for flights from London Heathrow Airport to Buenos Aires?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted 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?

Best airlines flying from London Heathrow Airport to Buenos Aires

Compare and see reviews for airlines that fly from London Heathrow Airport to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
Air FrancePriceFrom £450Free CancellationRating
7.4
1,482 reviews
Search Air France flights
AviancaPriceFrom £722Free CancellationRating
6.6
2,468 reviews
Search Avianca flights
IberiaPriceFrom £730Free CancellationRating
7.0
3,001 reviews
Search Iberia flights
FinnairPriceFrom £743Free CancellationRating
7.6
1,333 reviews
Search Finnair flights
British AirwaysPriceFrom £806Free CancellationRating
6.7
7,485 reviews
Search British Airways flights
LufthansaPriceFrom £828Free CancellationRating
6.8
7,539 reviews
Search Lufthansa flights
LATAM AirlinesPriceFrom £879Free CancellationRating
7.5
1,871 reviews
Search LATAM Airlines flights
American AirlinesPriceFrom £883Free CancellationRating
7.2
11,032 reviews
Search American Airlines flights
KLMPriceFrom £1,032Free CancellationRating
7.7
1,406 reviews
Search KLM flights

  • Finnair Flights From London Heathrow Airport to Buenos Aires

    Finnair flies from London Heathrow Airport to Buenos Aires around 7 times per week, with 1,333 momondo users rating the airline 7.6/10. The cheapest Finnair deal from London Heathrow Airport to Buenos Aires in the last 72 hours was £743 (round-trip), much lower than the average airfare cost of £1,089 for Finnair flights on this route.

  • Iberia Flights From London Heathrow Airport to Buenos Aires

    Iberia is also a popular choice for this route. Iberia flight deals for London Heathrow Airport to Buenos Aires start from as low as £730 round-trip, depending on your selected dates, with average Iberia deals seen on momondo around £1,044. Iberia operates 7 flights to Buenos Aires from London Heathrow Airport in an average week. Users have rated it 7.0/10 across 3,001 reviews.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Buenos Aires . Millions of users trust and use momondo every year so you are in good hands.

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 17.0 mi from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport