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Cheap flights from Buenos Aires to London from £453

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buenos Aires to London departing on 10/3. 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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Cheap return flights

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LATAM Airlines Logo
18:20 - 14:05
AEP
-
LHR
16h 45m1 stop
LATAM Airlines Logo
19:40 - 16:00
LHR
-
AEP
23h 20m2 stops
£923LATAM Airlines
Fri, 13 Mar - Mon, 23 Mar
Avianca Logo
16:55 - 14:35
EZE
-
LHR
18h 40m1 stop
Avianca Logo
22:05 - 00:10
LHR
-
EZE
30h 05m1 stop
£924Avianca
Fri, 27 Mar - Sun, 19 Apr
LATAM Airlines Logo
12:15 - 14:05
EZE
-
LHR
22h 50m2 stops
LATAM Airlines Logo
06:15 - 03:05
LHR
-
EZE
23h 50m2 stops
£925LATAM Airlines
Sat, 7 Mar - Thu, 12 Mar
Avianca Logo
16:55 - 14:35
EZE
-
LHR
18h 40m1 stop
Avianca Logo
22:05 - 00:10
LHR
-
EZE
30h 05m1 stop
£926Avianca
Fri, 27 Mar - Sun, 19 Apr
Avianca Logo
01:40 - 15:35
EZE
-
LHR
33h 55m1 stop
Avianca Logo
22:05 - 00:10
LHR
-
EZE
30h 05m1 stop
£927Avianca
Sat, 25 Apr - Thu, 28 May
ITA Airways Logo
12:55 - 09:40
EZE
-
LHR
16h 45m1 stop
ITA Airways Logo
16:30 - 22:50
LHR
-
EZE
34h 20m1 stop
£937ITA Airways
Mon, 6 Apr - Mon, 20 Apr
LEVEL Logo
13:00 - 20:05
EZE
-
LHR
28h 05m1 stop
LEVEL Logo
09:55 - 17:55
LHR
-
EZE
35h 00m1 stop
£938LEVEL
Thu, 5 Mar - Tue, 10 Mar
Air Canada Logo
16:45 - 06:30
EZE
-
LHR
34h 45m2 stops
Air Canada Logo
18:00 - 15:10
LHR
-
EZE
24h 10m2 stops
£941Air Canada
Mon, 9 Feb - Thu, 5 Mar
Multiple Airlines Logo
03:40 - 06:30
AEP
-
LHR
47h 50m2 stops
Multiple Airlines Logo
11:10 - 17:20
LHR
-
AEP
33h 10m2 stops
£948Multiple Airlines
Thu, 12 Mar - Mon, 23 Mar
Multiple Airlines Logo
18:20 - 14:05
AEP
-
LHR
16h 45m1 stop
Multiple Airlines Logo
20:15 - 17:20
LHR
-
AEP
24h 05m1 stop
£953Multiple Airlines
Mon, 9 Feb - Mon, 23 Feb

LATAM Airlines flights from Buenos Aires to London Heathrow Airport

Our best LATAM Airlines deals on Buenos Aires to London Heathrow Airport flight tickets
LATAM Airlines
13 Mar
AEP18:20Buenos Aires Jorge Newbery
16h 45m
1 stop
LHR14:05London Heathrow
23 Mar
LHR19:40London Heathrow
23h 20m
2 stops
AEP16:00Buenos Aires Jorge Newbery
£923
Find similar
LATAM Airlines
7 Mar
EZE12:15Buenos Aires Ministro Pistarini
22h 50m
2 stops
LHR14:05London Heathrow
12 Mar
LHR06:15London Heathrow
23h 50m
2 stops
EZE03:05Buenos Aires Ministro Pistarini
£925
Find similar
LATAM Airlines
20 May
EZE16:45Buenos Aires Ministro Pistarini
18h 20m
1 stop
LHR15:05London Heathrow
4 Nov
LHR06:15London Heathrow
32h 15m
2 stops
EZE11:30Buenos Aires Ministro Pistarini
£935
Find similar

Avianca flights from Buenos Aires to London Heathrow Airport

Our best Avianca deals on Buenos Aires to London Heathrow Airport flight tickets
Avianca
27 Mar
EZE16:55Buenos Aires Ministro Pistarini
18h 40m
1 stop
LHR14:35London Heathrow
19 Apr
LHR22:05London Heathrow
30h 05m
1 stop
EZE00:10Buenos Aires Ministro Pistarini
£924
Find similar
Avianca
27 Mar
EZE16:55Buenos Aires Ministro Pistarini
18h 40m
1 stop
LHR14:35London Heathrow
19 Apr
LHR22:05London Heathrow
30h 05m
1 stop
EZE00:10Buenos Aires Ministro Pistarini
£926
Find similar
Avianca
25 Apr
EZE01:40Buenos Aires Ministro Pistarini
33h 55m
1 stop
LHR15:35London Heathrow
28 May
LHR22:05London Heathrow
30h 05m
1 stop
EZE00:10Buenos Aires Ministro Pistarini
£927
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Buenos Aires to London Heathrow 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 Buenos Aires to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Fri 13/3

18:20-14:05

1 stop16h 45m

London Heathrow

Mon 23/3

19:40-16:00

2 stops23h 20m

£923

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Fri 27/3

16:55-14:35

1 stop18h 40m

London Heathrow

Sun 19/4

22:05-00:10

1 stop30h 05m

£924

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Sat 7/3

12:15-14:05

2 stops22h 50m

London Heathrow

Thu 12/3

06:15-03:05

2 stops23h 50m

£925

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Fri 27/3

16:55-14:35

1 stop18h 40m

London Heathrow

Sun 19/4

22:05-00:10

1 stop30h 05m

£926

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Sat 25/4

01:40-15:35

1 stop33h 55m

London Heathrow

Thu 28/5

22:05-00:10

1 stop30h 05m

£927

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Mon 6/4

12:55-09:40

1 stop16h 45m

London Heathrow

Mon 20/4

16:30-22:50

1 stop34h 20m

£937

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Thu 5/3

13:00-20:05

1 stop28h 05m

London Heathrow

Tue 10/3

09:55-17:55

1 stop35h 00m

£938

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Mon 9/2

16:45-06:30

2 stops34h 45m

London Heathrow

Thu 5/3

18:00-15:10

2 stops24h 10m

£941

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Thu 12/3

03:40-06:30

2 stops47h 50m

London Heathrow

Mon 23/3

11:10-17:20

2 stops33h 10m

£948

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Mon 9/2

18:20-14:05

1 stop16h 45m

London Heathrow

Mon 23/2

20:15-17:20

1 stop24h 05m

£953

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 London from

How to get the cheapest flight ticket from Buenos Aires to London Heathrow 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 Buenos Aires and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

In general, February is the cheapest month to fly from Buenos Aires to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £982. The month of March is another great option to travel to London Heathrow Airport, with average flight prices from Buenos Aires averaging around £985.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Buenos Aires to London Heathrow Airport in the afternoon for as low as £1,051. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £1,614 on average. Flights to London Heathrow Airport from Buenos Aires in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Buenos Aires to London Heathrow flight route?

Fly from Buenos Aires Ministro Pistarini to London Heathrow for the best Buenos Aires - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Buenos Aires when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £1,253 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Buenos Aires for as low as £1,069 on momondo.

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

There are 2 cabin classes available to choose from on Buenos Aires to London Heathrow 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 Buenos Aires to London Heathrow Airport flights?

You could potentially save up to 15% on your flight if you consider stops on a Buenos Aires to London Heathrow Airport flight.

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

When to book flights from Buenos Aires to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Buenos Aires to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Buenos Aires to London Heathrow Airport (BUE to LHR) flight deals and tips

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

Fastest flight time

15h 45m

Direct flights

Every day
The fastest flight from Buenos Aires to London Heathrow Airport takes 15h 45m
Direct flights go from Buenos Aires to London Heathrow Airport every day.
Search flight deals

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

    London Heathrow is 6898.3 mi away from Buenos Aires. 15h 45m is a normal flight duration for this route.

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

    Prices for flights from Buenos Aires to London Heathrow Airport refresh daily.

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

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

    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 Buenos Aires to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Buenos Aires to London Heathrow Airport?

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

Best airlines flying from Buenos Aires to London Heathrow Airport

Compare and see reviews for airlines that fly from Buenos Aires to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom £950Free CancellationRating
7.0
3,053 reviews
Search Iberia flights
British AirwaysPriceFrom £1,004Free CancellationRating
6.7
7,585 reviews
Search British Airways flights

  • British Airways Flights From Buenos Aires to London Heathrow Airport

    British Airways flight deals from Buenos Aires to London Heathrow Airport start from £1,004 round-trip. Over the 7 British Airways flights for this route in a normal week, average airfare is usually £1,384 round-trip - but some users have found much cheaper deals with momondo.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
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Worthing

Why use momondo?

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

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 Buenos Aires to London for you.

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

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

How can momondo help me find flights from Buenos Aires to London?

momondo helps you find the best flight between Buenos Aires and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Buenos Aires to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Buenos Aires 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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