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Cheap flights from Buenos Aires to London from $627

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 2/17. 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 Buenos Aires to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
2:55 pm - 2:05 pm
AEP
-
LHR
20h 10m1 stop
LATAM Airlines Logo
7:40 pm - 4:00 pm
LHR
-
AEP
23h 20m2 stops
$1,235LATAM Airlines
Fri, Mar 13 - Mon, Mar 23
Avianca Logo
6:50 am - 3:35 pm
EZE
-
LHR
28h 45m1 stop
Avianca Logo
9:40 pm - 3:50 pm
LHR
-
EZE
21h 10m1 stop
$1,236Avianca
Wed, May 20 - Wed, Nov 4
Avianca Logo
6:50 am - 3:35 pm
EZE
-
LHR
28h 45m1 stop
Avianca Logo
10:05 pm - 5:45 am
LHR
-
EZE
35h 40m1 stop
$1,240Avianca
Sun, Apr 26 - Thu, May 28
Avianca Logo
6:50 am - 3:35 pm
EZE
-
LHR
28h 45m1 stop
Avianca Logo
10:05 pm - 5:45 am
LHR
-
EZE
35h 40m1 stop
$1,248Avianca
Wed, Apr 29 - Thu, May 28
LATAM Airlines Logo
4:45 pm - 3:05 pm
EZE
-
LHR
18h 20m1 stop
LATAM Airlines Logo
6:15 am - 11:30 am
LHR
-
EZE
32h 15m2 stops
$1,251LATAM Airlines
Wed, May 20 - Wed, Nov 4
ITA Airways Logo
12:55 pm - 9:40 am
EZE
-
LHR
16h 45m1 stop
ITA Airways Logo
4:30 pm - 10:50 pm
LHR
-
EZE
34h 20m1 stop
$1,253ITA Airways
Mon, Apr 6 - Mon, Apr 20
LEVEL Logo
1:00 pm - 8:05 pm
EZE
-
LHR
28h 05m1 stop
LEVEL Logo
9:55 am - 5:55 pm
LHR
-
EZE
35h 00m1 stop
$1,255LEVEL
Thu, Mar 5 - Tue, Mar 10
Multiple Airlines Logo
3:40 am - 6:30 am
AEP
-
LHR
47h 50m2 stops
Multiple Airlines Logo
11:10 am - 5:20 pm
LHR
-
AEP
33h 10m2 stops
$1,268Multiple Airlines
Thu, Mar 12 - Mon, Mar 23
Multiple Airlines Logo
2:00 pm - 6:30 am
EZE
-
LHR
37h 30m2 stops
Multiple Airlines Logo
11:10 am - 3:50 pm
LHR
-
EZE
31h 40m2 stops
$1,268Multiple Airlines
Fri, Mar 13 - Mon, Mar 23
Air Canada Logo
1:35 pm - 6:35 am
AEP
-
LHR
37h 00m2 stops
Air Canada Logo
8:30 am - 5:10 pm
LHR
-
AEP
36h 40m2 stops
$1,284Air Canada
Wed, Apr 29 - Thu, May 28

Avianca flights from Buenos Aires to London Heathrow Airport

Our best Avianca deals on Buenos Aires to London Heathrow Airport flight tickets
Avianca
May 20
EZE6:50 amBuenos Aires Ministro Pistarini
28h 45m
1 stop
LHR3:35 pmLondon Heathrow
Nov 4
LHR9:40 pmLondon Heathrow
21h 10m
1 stop
EZE3:50 pmBuenos Aires Ministro Pistarini
$1,236
Find similar
Avianca
Apr 25
EZE1:40 amBuenos Aires Ministro Pistarini
33h 55m
1 stop
LHR3:35 pmLondon Heathrow
May 28
LHR10:05 pmLondon Heathrow
30h 05m
1 stop
EZE12:10 amBuenos Aires Ministro Pistarini
$1,240
Find similar
Avianca
Apr 29
EZE6:50 amBuenos Aires Ministro Pistarini
28h 45m
1 stop
LHR3:35 pmLondon Heathrow
May 28
LHR10:05 pmLondon Heathrow
35h 40m
1 stop
EZE5:45 amBuenos Aires Ministro Pistarini
$1,248
Find similar

LEVEL flights from Buenos Aires to London Heathrow Airport

Our best LEVEL deals on Buenos Aires to London Heathrow Airport flight tickets
LEVEL
Mar 5
EZE1:00 pmBuenos Aires Ministro Pistarini
28h 05m
1 stop
LHR8:05 pmLondon Heathrow
Mar 10
LHR9:55 amLondon Heathrow
35h 00m
1 stop
EZE5:55 pmBuenos Aires Ministro Pistarini
$1,255
Find similar
LEVEL
Dec 22
EZE1:00 pmBuenos Aires Ministro Pistarini
17h 10m
1 stop
LHR9:10 amLondon Heathrow
Feb 4
LHR9:55 amLondon Heathrow
28h 15m
1 stop
EZE11:10 amBuenos Aires Ministro Pistarini
$1,717
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated December 18, 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 3/13

2:55 pm-2:05 pm

1 stop20h 10m

London Heathrow

Mon 3/23

7:40 pm-4:00 pm

2 stops23h 20m

$1,235

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Wed 5/20

6:50 am-3:35 pm

1 stop28h 45m

London Heathrow

Wed 11/4

9:40 pm-3:50 pm

1 stop21h 10m

$1,236

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Sun 4/26

6:50 am-3:35 pm

1 stop28h 45m

London Heathrow

Thu 5/28

10:05 pm-5:45 am

1 stop35h 40m

$1,240

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Wed 4/29

6:50 am-3:35 pm

1 stop28h 45m

London Heathrow

Thu 5/28

10:05 pm-5:45 am

1 stop35h 40m

$1,248

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Wed 5/20

4:45 pm-3:05 pm

1 stop18h 20m

London Heathrow

Wed 11/4

6:15 am-11:30 am

2 stops32h 15m

$1,251

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Mon 4/6

12:55 pm-9:40 am

1 stop16h 45m

London Heathrow

Mon 4/20

4:30 pm-10:50 pm

1 stop34h 20m

$1,253

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Thu 3/5

1:00 pm-8:05 pm

1 stop28h 05m

London Heathrow

Tue 3/10

9:55 am-5:55 pm

1 stop35h 00m

$1,255

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Thu 3/12

3:40 am-6:30 am

2 stops47h 50m

London Heathrow

Mon 3/23

11:10 am-5:20 pm

2 stops33h 10m

$1,268

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Fri 3/13

2:00 pm-6:30 am

2 stops37h 30m

London Heathrow

Mon 3/23

11:10 am-3:50 pm

2 stops31h 40m

$1,268

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Wed 4/29

1:35 pm-6:35 am

2 stops37h 00m

London Heathrow

Thu 5/28

8:30 am-5:10 pm

2 stops36h 40m

$1,284

Flights are sorted by cheapest round-trip 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?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Buenos Aires, with most prices found around $1,314. If you’re not able to fly to London Heathrow Airport in February, then March is your next best option. Flight prices from Buenos Aires to London Heathrow Airport during March average around $1,317.

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 $1,225. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $1,334.

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 $1,676 when searching weeks out. 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 $1,430 on momondo.

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

There is only 1 cabin class 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 23% 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 round-trip 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

16h 40m

Direct flights

None
The fastest flight from Buenos Aires to London Heathrow Airport takes 16h 40m
There are no direct flights from Buenos Aires to London Heathrow Airport. There are no popular flight routes from Buenos Aires to London Heathrow Airport.
Search flight deals

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

    A flight from Buenos Aires to London Heathrow will travel around 6898.3 mi. Typically, this will take 16h 40m by plane in normal conditions.

  • 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 were last updated today.

  • 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 for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Buenos Aires to London Heathrow Airport.

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

    The travel and health documents you'll need for your trip to London Heathrow 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 London Heathrow Airport. 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 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 $1,390Free CancellationRating
7.0
3,050 reviews
Search Iberia flights
LufthansaPriceFrom $1,395Free CancellationRating
6.8
7,634 reviews
Search Lufthansa flights
British AirwaysPriceFrom $1,515Free CancellationRating
6.7
7,585 reviews
Search British Airways flights

  • British Airways Flights From Buenos Aires to London Heathrow Airport

    The lowest priced British Airways flight from Buenos Aires to London Heathrow Airport from the last 72 hours was $1,515. Generally, British Airways has 7 flights on this route every week with an average price of $1,862. British Airways is rated 6.7/10 by our users.

Traveling to a place near London?

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Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Buenos Aires.

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

Flights from Buenos Aires to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Buenos Aires and alert you when they change.

An easier way to manage your London Heathrow Airport trip

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