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Cheap flights from Buenos Aires to London from $629

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 12/8. 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

Avianca Logo
1:40 am - 3:35 pmEZE-LHR
33h 55m1 stop
Avianca Logo
10:05 pm - 12:10 amLHR-EZE
30h 05m1 stop
$1,305Avianca
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Mon, Sep 29 - Wed, Oct 22
Air Canada Logo
4:35 pm - 11:50 amEZE-LHR
39h 15m2 stops
Air Canada Logo
1:25 pm - 3:10 pmLHR-EZE
28h 45m2 stops
$1,307Air Canada
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Wed, Oct 15 - Fri, Nov 14
LATAM Airlines Logo
6:20 pm - 4:35 pmAEP-LHR
19h 15m2 stops
LATAM Airlines Logo
8:15 pm - 2:00 pmLHR-AEP
20h 45m1 stop
$1,309LATAM Airlines
Find Deal
Sun, Nov 9 - Mon, Feb 9
LATAM Airlines Logo
12:40 pm - 4:35 pmAEP-LHR
24h 55m2 stops
LATAM Airlines Logo
7:40 pm - 4:00 pmLHR-AEP
23h 20m2 stops
$1,310LATAM Airlines
Find Deal
Sun, Nov 9 - Mon, Feb 9
LATAM Airlines Logo
9:55 pm - 2:05 pmEZE-LHR
37h 10m1 stop
LATAM Airlines Logo
9:20 pm - 6:13 pmLHR-EZE
24h 53m2 stops
$1,314LATAM Airlines
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Mon, Mar 9 - Wed, Apr 8
Multiple Airlines Logo
2:30 am - 1:25 pmEZE-LHR
31h 55m2 stops
Multiple Airlines Logo
7:40 pm - 2:50 amLHR-EZE
34h 10m2 stops
$1,328Multiple Airlines
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Fri, Nov 14 - Wed, Nov 26
Iberia Logo
1:00 pm - 2:55 pmEZE-LHR
22h 55m2 stops
Iberia Logo
8:10 pm - 4:20 pmLHR-EZE
24h 10m1 stop
$1,331Iberia
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Mon, Mar 9 - Wed, Apr 8
Multiple Airlines Logo
3:15 am - 2:05 pmAEP-LHR
31h 50m1 stop
Multiple Airlines Logo
8:15 pm - 9:00 pmLHR-AEP
27h 45m1 stop
$1,335Multiple Airlines
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Thu, Oct 30 - Fri, Nov 7
American Airlines Logo
10:25 pm - 6:50 amEZE-LHR
29h 25m1 stop
American Airlines Logo
11:55 am - 7:05 amLHR-EZE
22h 10m1 stop
$1,340American Airlines
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Sun, Nov 9 - Mon, Feb 9
American Airlines Logo
10:10 am - 11:30 amEZE-LHR
22h 20m1 stop
American Airlines Logo
2:30 pm - 8:10 amLHR-EZE
20h 40m1 stop
$1,341American Airlines
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Thu, Dec 25 - Tue, Jan 20

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
Oct 15
EZE4:35 pmBuenos Aires Ministro Pistarini
39h 15m
2 stops
LHR11:50 amLondon Heathrow
Nov 14
LHR1:25 pmLondon Heathrow
28h 45m
2 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
$1,307
Find similar
Air Canada
Feb 11
EZE4:45 pmBuenos Aires Ministro Pistarini
35h 25m
2 stops
LHR7:10 amLondon Heathrow
Mar 1
LHR1:25 pmLondon Heathrow
28h 45m
2 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
$1,338
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Air Canada
Oct 15
AEP1:55 pmBuenos Aires Jorge Newbery
36h 40m
2 stops
LHR6:35 amLondon Heathrow
Nov 14
LHR1:25 pmLondon Heathrow
30h 55m
2 stops
AEP5:20 pmBuenos Aires Jorge Newbery
$1,344
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American Airlines flights from Buenos Aires to London Heathrow Airport

Our best American Airlines deals on Buenos Aires to London Heathrow Airport flight tickets
American Airlines
Nov 9
EZE10:25 pmBuenos Aires Ministro Pistarini
29h 25m
1 stop
LHR6:50 amLondon Heathrow
Feb 9
LHR11:55 amLondon Heathrow
22h 10m
1 stop
EZE7:05 amBuenos Aires Ministro Pistarini
$1,340
Find similar
American Airlines
Dec 25
EZE10:10 amBuenos Aires Ministro Pistarini
22h 20m
1 stop
LHR11:30 amLondon Heathrow
Jan 20
LHR2:30 pmLondon Heathrow
20h 40m
1 stop
EZE8:10 amBuenos Aires Ministro Pistarini
$1,341
Find similar
American Airlines
Jan 30
EZE10:10 amBuenos Aires Ministro Pistarini
22h 20m
1 stop
LHR11:30 amLondon Heathrow
Feb 16
LHR5:00 pmLondon Heathrow
20h 50m
1 stop
EZE10:50 amBuenos Aires Ministro Pistarini
$1,361
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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 September 17, 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

Mon 9/29

1:40 am-3:35 pm

1 stop33h 55m

London Heathrow

Wed 10/22

10:05 pm-12:10 am

1 stop30h 05m

$1,305

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Wed 10/15

4:35 pm-11:50 am

2 stops39h 15m

London Heathrow

Fri 11/14

1:25 pm-3:10 pm

2 stops28h 45m

$1,307

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Sun 11/9

6:20 pm-4:35 pm

2 stops19h 15m

London Heathrow

Mon 2/9

8:15 pm-2:00 pm

1 stop20h 45m

$1,309

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Sun 11/9

12:40 pm-4:35 pm

2 stops24h 55m

London Heathrow

Mon 2/9

7:40 pm-4:00 pm

2 stops23h 20m

$1,310

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Mon 3/9

9:55 pm-2:05 pm

1 stop37h 10m

London Heathrow

Wed 4/8

9:20 pm-6:13 pm

2 stops24h 53m

$1,314

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Fri 11/14

2:30 am-1:25 pm

2 stops31h 55m

London Heathrow

Wed 11/26

7:40 pm-2:50 am

2 stops34h 10m

$1,328

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Mon 3/9

1:00 pm-2:55 pm

2 stops22h 55m

London Heathrow

Wed 4/8

8:10 pm-4:20 pm

1 stop24h 10m

$1,331

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Thu 10/30

3:15 am-2:05 pm

1 stop31h 50m

London Heathrow

Fri 11/7

8:15 pm-9:00 pm

1 stop27h 45m

$1,335

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Sun 11/9

10:25 pm-6:50 am

1 stop29h 25m

London Heathrow

Mon 2/9

11:55 am-7:05 am

1 stop22h 10m

$1,340

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Thu 12/25

10:10 am-11:30 am

1 stop22h 20m

London Heathrow

Tue 1/20

2:30 pm-8:10 am

1 stop20h 40m

$1,341

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 $1,333. 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 $1,346.

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 $1,745 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 $1,506 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 13% 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

Direct flights

None
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.
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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 15h 25m 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
British AirwaysPriceFrom $1,381Free CancellationRating
6.7
7,367 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 $1,381. Generally, British Airways has 6 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?

Book flights to London if you plan to visit one of these locations
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Stratford-upon-Avon
Watford

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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