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Cheap flights from London Heathrow Airport to Buenos Aires from £452

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 15/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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.
Avianca Logo
21:40 - 05:40
LHR
-
AEP
35h 00m
1 stop
Avianca Logo
07:00 - 15:35
AEP
-
LHR
28h 35m
1 stop
£797Avianca
Wed, 11 Mar - Tue, 31 Mar
Avianca Logo
21:40 - 05:40
LHR
-
AEP
35h 00m
1 stop
Avianca Logo
07:00 - 14:35
AEP
-
LHR
28h 35m
1 stop
£798Avianca
Sun, 15 Mar - Thu, 26 Mar
Avianca Logo
22:05 - 05:40
LHR
-
AEP
35h 35m
1 stop
Avianca Logo
07:00 - 15:35
AEP
-
LHR
28h 35m
1 stop
£803Avianca
Wed, 20 May - Mon, 8 Jun
Avianca Logo
22:05 - 05:40
LHR
-
AEP
35h 35m
1 stop
Avianca Logo
07:00 - 15:35
AEP
-
LHR
28h 35m
1 stop
£805Avianca
Tue, 26 May - Wed, 10 Jun
Avianca Logo
21:40 - 05:40
LHR
-
AEP
35h 00m
1 stop
Avianca Logo
07:00 - 15:35
AEP
-
LHR
28h 35m
1 stop
£808Avianca
Tue, 17 Mar - Sun, 29 Mar
Avianca Logo
22:05 - 05:40
LHR
-
AEP
35h 35m
1 stop
Avianca Logo
07:00 - 15:35
AEP
-
LHR
28h 35m
1 stop
£808Avianca
Sun, 24 May - Fri, 5 Jun
Avianca Logo
22:05 - 05:40
LHR
-
AEP
35h 35m
1 stop
Avianca Logo
07:00 - 15:35
AEP
-
LHR
28h 35m
1 stop
£809Avianca
Tue, 14 Apr - Tue, 21 Apr
Avianca Logo
22:05 - 05:40
LHR
-
AEP
35h 35m
1 stop
Avianca Logo
07:00 - 15:35
AEP
-
LHR
28h 35m
1 stop
£813Avianca
Tue, 14 Apr - Mon, 27 Apr
Avianca Logo
22:05 - 05:40
LHR
-
AEP
35h 35m
1 stop
Avianca Logo
07:00 - 15:35
AEP
-
LHR
28h 35m
1 stop
£815Avianca
Thu, 23 Apr - Tue, 12 May
Avianca Logo
22:05 - 05:40
LHR
-
AEP
35h 35m
1 stop
Avianca Logo
07:00 - 15:35
AEP
-
LHR
28h 35m
1 stop
£819Avianca
Sun, 19 Apr - Sun, 10 May

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
11 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
£797
Avianca
15 Mar
LHR21:40London Heathrow
35h 00m
1 stop
AEP05:40Buenos Aires Jorge Newbery
26 Mar
AEP07:00Buenos Aires Jorge Newbery
28h 35m
1 stop
LHR14:35London Heathrow
£798
Avianca
20 May
LHR22:05London Heathrow
35h 35m
1 stop
AEP05:40Buenos Aires Jorge Newbery
8 Jun
AEP07:00Buenos Aires Jorge Newbery
28h 35m
1 stop
LHR15:35London Heathrow
£803

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
8 Mar
LHR20:15London Heathrow
18h 30m
1 stop
AEP11:45Buenos Aires Jorge Newbery
15 Mar
AEP18:20Buenos Aires Jorge Newbery
16h 45m
1 stop
LHR14:05London Heathrow
£835
LATAM Airlines
17 Mar
LHR20:15London Heathrow
18h 30m
1 stop
AEP11:45Buenos Aires Jorge Newbery
24 Mar
AEP18:20Buenos Aires Jorge Newbery
16h 45m
1 stop
LHR14:05London Heathrow
£843
LATAM Airlines
18 Mar
LHR20:15London Heathrow
16h 25m
1 stop
AEP09:40Buenos Aires Jorge Newbery
25 Mar
AEP14:55Buenos Aires Jorge Newbery
20h 10m
1 stop
LHR14:05London Heathrow
£846

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 2 February 2026.
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

Wed 11/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Tue 31/3

07:00-15:35

1 stop28h 35m

£797

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sun 15/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Thu 26/3

07:00-14:35

1 stop28h 35m

£798

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Wed 20/5

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Mon 8/6

07:00-15:35

1 stop28h 35m

£803

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 26/5

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Wed 10/6

07:00-15:35

1 stop28h 35m

£805

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 17/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Sun 29/3

07:00-15:35

1 stop28h 35m

£808

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sun 24/5

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Fri 5/6

07:00-15:35

1 stop28h 35m

£808

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 14/4

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Tue 21/4

07:00-15:35

1 stop28h 35m

£809

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 14/4

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Mon 27/4

07:00-15:35

1 stop28h 35m

£813

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Thu 23/4

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Tue 12/5

07:00-15:35

1 stop28h 35m

£815

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sun 19/4

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Sun 10/5

07:00-15:35

1 stop28h 35m

£819

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 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

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

You could potentially save up to 22% 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 £903Free CancellationRating
7.5
1,917 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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