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Cheap flights from London Heathrow Airport to Buenos Aires from £456

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 15/4. 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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0 bags

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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.
LATAM Airlines Logo
20:15 - 09:40
LHR
-
AEP
16h 25m1 stop
LATAM Airlines Logo
18:20 - 15:05
AEP
-
LHR
16h 45m1 stop
£839LATAM Airlines
Thu, 19 Mar - Tue, 31 Mar
Avianca Logo
21:40 - 05:40
LHR
-
AEP
35h 00m1 stop
Avianca Logo
07:00 - 15:35
AEP
-
LHR
28h 35m1 stop
£842Avianca
Tue, 3 Mar - Tue, 31 Mar
LATAM Airlines Logo
20:15 - 09:40
LHR
-
AEP
16h 25m1 stop
LATAM Airlines Logo
18:20 - 15:05
AEP
-
LHR
16h 45m1 stop
£846LATAM Airlines
Sat, 14 Mar - Tue, 31 Mar
LATAM Airlines Logo
20:15 - 11:45
LHR
-
AEP
18h 30m1 stop
LATAM Airlines Logo
18:20 - 14:05
AEP
-
LHR
16h 45m1 stop
£855LATAM Airlines
Sat, 7 Mar - Sat, 21 Mar
LATAM Airlines Logo
20:15 - 11:45
LHR
-
AEP
18h 30m1 stop
LATAM Airlines Logo
14:55 - 15:05
AEP
-
LHR
20h 10m1 stop
£858LATAM Airlines
Tue, 3 Mar - Tue, 31 Mar
LATAM Airlines Logo
20:15 - 11:45
LHR
-
AEP
18h 30m1 stop
LATAM Airlines Logo
18:20 - 14:05
AEP
-
LHR
16h 45m1 stop
£860LATAM Airlines
Tue, 3 Mar - Fri, 13 Mar
LATAM Airlines Logo
20:15 - 11:45
LHR
-
AEP
18h 30m1 stop
LATAM Airlines Logo
12:40 - 14:05
AEP
-
LHR
22h 25m1 stop
£861LATAM Airlines
Tue, 3 Mar - Wed, 18 Mar
Avianca Logo
21:40 - 05:40
LHR
-
AEP
35h 00m1 stop
Avianca Logo
07:00 - 14:35
AEP
-
LHR
28h 35m1 stop
£862Avianca
Wed, 4 Mar - Thu, 19 Mar
Avianca Logo
21:40 - 05:40
LHR
-
AEP
35h 00m1 stop
Avianca Logo
07:00 - 14:35
AEP
-
LHR
28h 35m1 stop
£864Avianca
Sun, 8 Mar - Sun, 22 Mar
Avianca Logo
21:40 - 05:40
LHR
-
AEP
35h 00m1 stop
Avianca Logo
07:00 - 14:35
AEP
-
LHR
28h 35m1 stop
£864Avianca
Thu, 12 Mar - Mon, 16 Mar

LATAM Airlines flights from London Heathrow Airport to Buenos Aires Jorge Newbery Airport

Our best LATAM Airlines deals on London Heathrow Airport to Buenos Aires Jorge Newbery Airport flight tickets
LATAM Airlines
19 Mar
LHR20:15London Heathrow
16h 25m
1 stop
AEP09:40Buenos Aires Jorge Newbery
31 Mar
AEP18:20Buenos Aires Jorge Newbery
16h 45m
1 stop
LHR15:05London Heathrow
£839
Find similar
LATAM Airlines
7 Mar
LHR20:15London Heathrow
18h 30m
1 stop
AEP11:45Buenos Aires Jorge Newbery
21 Mar
AEP18:20Buenos Aires Jorge Newbery
16h 45m
1 stop
LHR14:05London Heathrow
£855
Find similar
LATAM Airlines
3 Mar
LHR20:15London Heathrow
18h 30m
1 stop
AEP11:45Buenos Aires Jorge Newbery
13 Mar
AEP18:20Buenos Aires Jorge Newbery
16h 45m
1 stop
LHR14:05London Heathrow
£860
Find similar

Avianca flights from London Heathrow Airport to Buenos Aires Jorge Newbery Airport

Our best Avianca deals on London Heathrow Airport to Buenos Aires Jorge Newbery Airport flight tickets
Avianca
3 Mar
LHR21:40London Heathrow
35h 00m
1 stop
AEP05:40Buenos Aires Jorge Newbery
31 Mar
AEP07:00Buenos Aires Jorge Newbery
28h 35m
1 stop
LHR15:35London Heathrow
£842
Find similar
Avianca
4 Mar
LHR21:40London Heathrow
35h 00m
1 stop
AEP05:40Buenos Aires Jorge Newbery
19 Mar
AEP07:00Buenos Aires Jorge Newbery
28h 35m
1 stop
LHR14:35London Heathrow
£862
Find similar
Avianca
8 Mar
LHR21:40London Heathrow
35h 00m
1 stop
AEP05:40Buenos Aires Jorge Newbery
22 Mar
AEP07:00Buenos Aires Jorge Newbery
28h 35m
1 stop
LHR14:35London Heathrow
£864
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Buenos Aires Jorge Newbery Airport 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 18 December 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Buenos Aires Jorge Newbery Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Thu 19/3

20:15-09:40

1 stop16h 25m

Buenos Aires Jorge Newbery

Tue 31/3

18:20-15:05

1 stop16h 45m

£839

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 3/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Tue 31/3

07:00-15:35

1 stop28h 35m

£842

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sat 14/3

20:15-09:40

1 stop16h 25m

Buenos Aires Jorge Newbery

Tue 31/3

18:20-15:05

1 stop16h 45m

£846

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sat 7/3

20:15-11:45

1 stop18h 30m

Buenos Aires Jorge Newbery

Sat 21/3

18:20-14:05

1 stop16h 45m

£855

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 3/3

20:15-11:45

1 stop18h 30m

Buenos Aires Jorge Newbery

Tue 31/3

14:55-15:05

1 stop20h 10m

£858

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 3/3

20:15-11:45

1 stop18h 30m

Buenos Aires Jorge Newbery

Fri 13/3

18:20-14:05

1 stop16h 45m

£860

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 3/3

20:15-11:45

1 stop18h 30m

Buenos Aires Jorge Newbery

Wed 18/3

12:40-14:05

1 stop22h 25m

£861

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Wed 4/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Thu 19/3

07:00-14:35

1 stop28h 35m

£862

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sun 8/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Sun 22/3

07:00-14:35

1 stop28h 35m

£864

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Thu 12/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Mon 16/3

07:00-14:35

1 stop28h 35m

£864

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from London Heathrow Airport to Buenos Aires Jorge Newbery Airport

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 Jorge Newbery Airport?

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

According to our data, Sunday is the cheapest day to fly to Buenos Aires Jorge Newbery Airport from London Heathrow Airport. The lowest ticket price found for a Sunday departure recently was £782. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Buenos Aires Jorge Newbery Airport for around £1,456.

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

Flying to Buenos Aires Jorge Newbery Airport from London Heathrow Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as £891 when looking at flights departing in the afternoon. Try not to purchase tickets in the evening because they tend to be around £1,088. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You could potentially save up to 12% on your flight if you consider stops on a London Heathrow Airport to Buenos Aires Jorge Newbery Airport flight.

When to book flights from London Heathrow Airport to Buenos Aires Jorge Newbery Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Buenos Aires Jorge Newbery Airport 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 Jorge Newbery Airport (LHR to AEP) flight deals and tips

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

Fastest flight time

16h 10m

Direct flights

None
The fastest flight from London Heathrow Airport to Buenos Aires Jorge Newbery Airport takes 16h 10m
There are no direct flights from London Heathrow Airport to Buenos Aires Jorge Newbery Airport. There are no popular flight routes from London Heathrow Airport to Buenos Aires Jorge Newbery Airport.
Search flight deals

  • How far is London Heathrow to Buenos Aires Jorge Newbery by plane?

    London Heathrow and Buenos Aires Jorge Newbery are 6896.3 mi apart from one another. 16h 10m is a normal flight duration for this route.

  • When did momondo last update prices for flights from London Heathrow Airport to Buenos Aires Jorge Newbery Airport?

    Prices for flights from London Heathrow Airport to Buenos Aires Jorge Newbery Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from London Heathrow Airport to Buenos Aires Jorge Newbery Airport?

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

    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 Jorge Newbery Airport.

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

    The travel and health documents you'll need for your trip to Buenos Aires Jorge Newbery Airport 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 Jorge Newbery Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from London Heathrow Airport to Buenos Aires Jorge Newbery Airport?

Best airlines flying from London Heathrow Airport to Buenos Aires Jorge Newbery Airport

Compare and see reviews for airlines that fly from London Heathrow Airport to Buenos Aires Jorge Newbery Airport with momondo
Airline
Rating
Free Cancellation
Price
LATAM AirlinesPriceFrom £908Free CancellationRating
7.5
1,893 reviews
Search LATAM Airlines flights

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?

momondo does allow users to show only those flights to Buenos Aires from London which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to Buenos Aires from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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