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Cheap flights from Buenos Aires to London from $521

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 11/12. 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 round-trip flights

Ethiopian Air Logo
9:55 pm - 7:00 amEZE-LHR
29h 05m2 stops
Ethiopian Air Logo
9:00 pm - 8:25 pmLHR-EZE
27h 25m2 stops
$1,092Ethiopian Air
Find Deal
Wed, Aug 20 - Wed, Sep 10
Ethiopian Air Logo
9:55 pm - 7:00 amEZE-LHR
29h 05m2 stops
Ethiopian Air Logo
9:00 pm - 8:25 pmLHR-EZE
27h 25m2 stops
$1,094Ethiopian Air
Find Deal
Mon, Aug 25 - Tue, Sep 16
Logo
12:05 am - 3:05 pmAEP-LHR
35h 00m1 stop
Logo
8:15 am - 6:40 amLHR-AEP
25h 25m2 stops
$1,101
Find Deal
Sat, Oct 18 - Fri, Oct 31
Logo
11:50 am - 2:05 pmAEP-LHR
23h 15m1 stop
Logo
7:55 pm - 11:20 pmLHR-AEP
30h 25m2 stops
$1,111
Find Deal
Wed, Oct 29 - Thu, Nov 6
Air Canada Logo
4:45 pm - 6:30 amEZE-LHR
34h 45m2 stops
Air Canada Logo
9:00 am - 3:10 pmLHR-EZE
33h 10m3 stops
$1,139Air Canada
Find Deal
Mon, Nov 10 - Thu, Nov 27
Air Canada Logo
4:45 pm - 6:30 amEZE-LHR
34h 45m2 stops
Air Canada Logo
9:00 am - 3:10 pmLHR-EZE
33h 10m3 stops
$1,140Air Canada
Find Deal
Mon, Nov 10 - Thu, Nov 27
United Airlines Logo
9:00 pm - 7:40 amEZE-LHR
30h 40m1 stop
United Airlines Logo
10:00 am - 8:00 amLHR-EZE
26h 00m1 stop
$1,212United Airlines
Find Deal
Wed, Sep 3 - Mon, Sep 8
LATAM Airlines Logo
12:40 pm - 2:05 pmAEP-LHR
22h 25m1 stop
LATAM Airlines Logo
7:05 pm - 4:00 pmLHR-AEP
23h 55m2 stops
$1,221LATAM Airlines
Find Deal
Sun, Nov 9 - Mon, Feb 9
LATAM Airlines Logo
2:30 am - 2:05 pmEZE-LHR
32h 35m1 stop
LATAM Airlines Logo
8:15 pm - 2:35 amLHR-EZE
33h 20m1 stop
$1,226LATAM Airlines
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Sat, Nov 15 - Sun, Nov 30
United Airlines Logo
9:00 pm - 7:40 amEZE-LHR
30h 40m1 stop
United Airlines Logo
10:00 am - 7:20 amLHR-EZE
24h 20m1 stop
$1,258United Airlines
Find Deal
Wed, Sep 3 - Wed, Jan 21

Air Canada flights from Buenos Aires to London Heathrow Airport

Our best Air Canada deals on Buenos Aires to London Heathrow Airport flight tickets
Air Canada
Nov 10
EZE4:45 pmBuenos Aires Ministro Pistarini
34h 45m
2 stops
LHR6:30 amLondon Heathrow
Nov 27
LHR9:00 amLondon Heathrow
33h 10m
3 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
$1,139
Find similar
Air Canada
Nov 10
EZE4:45 pmBuenos Aires Ministro Pistarini
34h 45m
2 stops
LHR6:30 amLondon Heathrow
Nov 27
LHR9:00 amLondon Heathrow
33h 10m
3 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
$1,140
Find similar
Air Canada
Nov 10
EZE4:45 pmBuenos Aires Ministro Pistarini
39h 35m
2 stops
LHR11:20 amLondon Heathrow
Nov 27
LHR6:00 pmLondon Heathrow
24h 10m
2 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
$1,156
Find similar

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
Nov 9
AEP12:40 pmBuenos Aires Jorge Newbery
22h 25m
1 stop
LHR2:05 pmLondon Heathrow
Feb 9
LHR7:05 pmLondon Heathrow
23h 55m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
$1,221
Find similar
LATAM Airlines
Nov 15
EZE2:30 amBuenos Aires Ministro Pistarini
32h 35m
1 stop
LHR2:05 pmLondon Heathrow
Nov 30
LHR8:15 pmLondon Heathrow
33h 20m
1 stop
EZE2:35 amBuenos Aires Ministro Pistarini
$1,226
Find similar
LATAM Airlines
Oct 22
AEP8:40 amBuenos Aires Jorge Newbery
26h 25m
2 stops
LHR3:05 pmLondon Heathrow
Nov 12
LHR11:25 amLondon Heathrow
34h 15m
2 stops
AEP6:40 pmBuenos Aires Jorge Newbery
$1,228
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 July 31, 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

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Wed 8/20

9:55 pm-7:00 am

2 stops29h 05m

London Heathrow

Wed 9/10

9:00 pm-8:25 pm

2 stops27h 25m

$1,092

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Mon 8/25

9:55 pm-7:00 am

2 stops29h 05m

London Heathrow

Tue 9/16

9:00 pm-8:25 pm

2 stops27h 25m

$1,094

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Sat 10/18

12:05 am-3:05 pm

1 stop35h 00m

London Heathrow

Fri 10/31

8:15 am-6:40 am

2 stops25h 25m

$1,101

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Wed 10/29

11:50 am-2:05 pm

1 stop23h 15m

London Heathrow

Thu 11/6

7:55 pm-11:20 pm

2 stops30h 25m

$1,111

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Mon 11/10

4:45 pm-6:30 am

2 stops34h 45m

London Heathrow

Thu 11/27

9:00 am-3:10 pm

3 stops33h 10m

$1,139

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Mon 11/10

4:45 pm-6:30 am

2 stops34h 45m

London Heathrow

Thu 11/27

9:00 am-3:10 pm

3 stops33h 10m

$1,140

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Wed 9/3

9:00 pm-7:40 am

1 stop30h 40m

London Heathrow

Mon 9/8

10:00 am-8:00 am

1 stop26h 00m

$1,212

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Sun 11/9

12:40 pm-2:05 pm

1 stop22h 25m

London Heathrow

Mon 2/9

7:05 pm-4:00 pm

2 stops23h 55m

$1,221

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Sat 11/15

2:30 am-2:05 pm

1 stop32h 35m

London Heathrow

Sun 11/30

8:15 pm-2:35 am

1 stop33h 20m

$1,226

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Wed 9/3

9:00 pm-7:40 am

1 stop30h 40m

London Heathrow

Wed 1/21

10:00 am-7:20 am

1 stop24h 20m

$1,258

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 cheapest month to fly to London Heathrow Airport?

The month of March is, on average, the cheapest month to fly to London Heathrow Airport from Buenos Aires, with most prices found around $1,331. If you’re not able to fly to London Heathrow Airport in March, then February is your next best option. Flight prices from Buenos Aires to London Heathrow Airport during February average around $1,461.

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 morning are often more expensive with an average ticket price of $1,436.

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 $1,773 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 $1,510 on momondo.

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

There are 1 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.

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

Best Price Found

$521

Fastest flight time

16h 45m

Direct flights

None
The best one-way flight to London Heathrow Airport from Buenos Aires in the past 72 hours is $521. The best round-trip flight deal from Buenos Aires to London Heathrow Airport found on momondo in the last 72 hours is $1,092.
The fastest flight from Buenos Aires to London Heathrow Airport takes 16h 45m
There are no direct flights from Buenos Aires to London Heathrow Airport. Popular non-direct routes for this connection are Buenos Aires Ministro Pistarini Airport - London Heathrow Airport and Buenos Aires Jorge Newbery Airport - London Heathrow Airport.
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  • 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 45m 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
LufthansaPriceFrom $1,100Free CancellationRating
6.8
7,275 reviews
Search Lufthansa flights
British AirwaysPriceFrom $1,318Free CancellationRating
6.6
7,222 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 $1,318. Generally, British Airways has 3 flights on this route every week with an average price of $1,576. British Airways is rated 6.6/10 by our users.

Traveling to a place near London?

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

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