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Cheap flights from London Heathrow Airport to Buenos Aires from £457

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 7/3. 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
21:40 - 15:50
LHR
-
EZE
21h 10m1 stop
Avianca Logo
16:55 - 14:35
EZE
-
LHR
18h 40m1 stop
£813Avianca
Sat, 7 Mar - Sat, 14 Mar
Lufthansa Logo
10:00 - 07:20
LHR
-
EZE
24h 20m1 stop
Lufthansa Logo
23:55 - 10:15
EZE
-
LHR
31h 20m1 stop
£814Lufthansa
Wed, 21 Jan - Wed, 28 Jan
Turkish Airlines Logo
16:40 - 22:25
LHR
-
EZE
32h 45m2 stops
Turkish Airlines Logo
23:55 - 14:10
EZE
-
LHR
35h 15m2 stops
£817Turkish Airlines
Sat, 7 Mar - Tue, 24 Mar
Turkish Airlines Logo
06:35 - 22:25
LHR
-
EZE
42h 50m2 stops
Turkish Airlines Logo
23:55 - 14:10
EZE
-
LHR
35h 15m2 stops
£818Turkish Airlines
Thu, 5 Mar - Thu, 19 Mar
Air Canada Logo
12:40 - 14:25
LHR
-
EZE
53h 45m3 stops
Air Canada Logo
16:35 - 21:00
EZE
-
LHR
48h 25m3 stops
£822Air Canada
Mon, 20 Apr - Mon, 4 May
Air France Logo
06:15 - 22:05
LHR
-
EZE
19h 50m1 stop
Air France Logo
00:25 - 08:00
EZE
-
LHR
27h 35m1 stop
£823Air France
Mon, 20 Apr - Tue, 5 May
Air France Logo
17:35 - 19:50
LHR
-
EZE
29h 15m1 stop
Air France Logo
22:40 - 07:55
EZE
-
LHR
30h 15m1 stop
£825Air France
Wed, 18 Mar - Wed, 25 Mar
Avianca Logo
21:40 - 15:50
LHR
-
EZE
21h 10m1 stop
Avianca Logo
16:55 - 14:35
EZE
-
LHR
18h 40m1 stop
£828Avianca
Mon, 2 Mar - Sun, 22 Mar
Air Canada Logo
12:40 - 14:30
LHR
-
EZE
53h 50m3 stops
Air Canada Logo
16:35 - 09:35
EZE
-
LHR
37h 00m2 stops
£829Air Canada
Thu, 30 Apr - Wed, 13 May
LATAM Airlines Logo
20:15 - 14:00
LHR
-
AEP
20h 45m1 stop
LATAM Airlines Logo
12:40 - 14:05
AEP
-
LHR
22h 25m1 stop
£867LATAM Airlines
Sun, 1 Mar - Wed, 18 Mar

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
7 Mar
LHR16:40London Heathrow
32h 45m
2 stops
EZE22:25Buenos Aires Ministro Pistarini
24 Mar
EZE23:55Buenos Aires Ministro Pistarini
35h 15m
2 stops
LHR14:10London Heathrow
£817
Find similar
Turkish Airlines
5 Mar
LHR06:35London Heathrow
42h 50m
2 stops
EZE22:25Buenos Aires Ministro Pistarini
19 Mar
EZE23:55Buenos Aires Ministro Pistarini
35h 15m
2 stops
LHR14:10London Heathrow
£818
Find similar
Turkish Airlines
2 Mar
LHR22:35London Heathrow
50h 50m
2 stops
EZE22:25Buenos Aires Ministro Pistarini
18 Mar
EZE23:55Buenos Aires Ministro Pistarini
55h 00m
2 stops
LHR09:55London Heathrow
£828
Find similar

Air Canada flights from London Heathrow Airport to Buenos Aires

Our best Air Canada deals on London Heathrow Airport to Buenos Aires flight tickets
Air Canada
20 Apr
LHR12:40London Heathrow
53h 45m
3 stops
EZE14:25Buenos Aires Ministro Pistarini
4 May
EZE16:35Buenos Aires Ministro Pistarini
48h 25m
3 stops
LHR21:00London Heathrow
£822
Find similar
Air Canada
4 Mar
LHR11:10London Heathrow
30h 50m
2 stops
EZE15:00Buenos Aires Ministro Pistarini
18 Mar
EZE16:45Buenos Aires Ministro Pistarini
34h 45m
2 stops
LHR06:30London Heathrow
£824
Find similar
Air Canada
30 Apr
LHR12:40London Heathrow
53h 50m
3 stops
EZE14:30Buenos Aires Ministro Pistarini
13 May
EZE16:35Buenos Aires Ministro Pistarini
37h 00m
2 stops
LHR09:35London Heathrow
£829
Find similar

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 9 December 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

Sat 7/3

21:40-15:50

1 stop21h 10m

Buenos Aires Ministro Pistarini

Sat 14/3

16:55-14:35

1 stop18h 40m

£813

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 21/1

10:00-07:20

1 stop24h 20m

Buenos Aires Ministro Pistarini

Wed 28/1

23:55-10:15

1 stop31h 20m

£814

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 7/3

16:40-22:25

2 stops32h 45m

Buenos Aires Ministro Pistarini

Tue 24/3

23:55-14:10

2 stops35h 15m

£817

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 5/3

06:35-22:25

2 stops42h 50m

Buenos Aires Ministro Pistarini

Thu 19/3

23:55-14:10

2 stops35h 15m

£818

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 20/4

12:40-14:25

3 stops53h 45m

Buenos Aires Ministro Pistarini

Mon 4/5

16:35-21:00

3 stops48h 25m

£822

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 20/4

06:15-22:05

1 stop19h 50m

Buenos Aires Ministro Pistarini

Tue 5/5

00:25-08:00

1 stop27h 35m

£823

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 18/3

17:35-19:50

1 stop29h 15m

Buenos Aires Ministro Pistarini

Wed 25/3

22:40-07:55

1 stop30h 15m

£825

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 2/3

21:40-15:50

1 stop21h 10m

Buenos Aires Ministro Pistarini

Sun 22/3

16:55-14:35

1 stop18h 40m

£828

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 30/4

12:40-14:30

3 stops53h 50m

Buenos Aires Ministro Pistarini

Wed 13/5

16:35-09:35

2 stops37h 00m

£829

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sun 1/3

20:15-14:00

1 stop20h 45m

Buenos Aires Jorge Newbery

Wed 18/3

12:40-14:05

1 stop22h 25m

£867

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?

In general, February 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 £884. If you don’t want to visit Buenos Aires in February, then you should wait until September to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £894.

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 £1,000. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday 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 £1,162.

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 £828. 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 £1,034 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 £867 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 26% 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 December 2025, prices for London Heathrow Airport to Buenos Aires flights are approximately 16% 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

£1,040

Fastest flight time

16h 25m

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 £1,040
The fastest flight from London Heathrow Airport to Buenos Aires takes 16h 25m
Direct flights go from London Heathrow Airport to Buenos Aires every day.
There is 1 airport near Buenos Aires: Buenos Aires Ministro Pistarini (EZE)
Search flight deals

  • 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 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 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
1,502 reviews
Search Air France flights
AviancaPriceFrom £705Free CancellationRating
6.6
2,476 reviews
Search Avianca flights
IberiaPriceFrom £726Free CancellationRating
7.0
3,042 reviews
Search Iberia flights
FinnairPriceFrom £742Free CancellationRating
7.6
1,334 reviews
Search Finnair flights
British AirwaysPriceFrom £810Free CancellationRating
6.7
7,566 reviews
Search British Airways flights
LufthansaPriceFrom £825Free CancellationRating
6.8
7,618 reviews
Search Lufthansa flights
American AirlinesPriceFrom £874Free CancellationRating
7.2
11,044 reviews
Search American Airlines flights
LATAM AirlinesPriceFrom £912Free CancellationRating
7.5
1,889 reviews
Search LATAM Airlines flights
KLMPriceFrom £1,031Free CancellationRating
7.7
1,431 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 1,334 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 £742 (round-trip), much lower than the average airfare cost of £1,094 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 £726 round-trip, depending on your selected dates, with average Iberia deals seen on momondo around £914. Iberia operates 7 flights to Buenos Aires from London Heathrow Airport in an average week. Users have rated it 7.0/10 across 3,043 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