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Cheap flights from London to Buenos Aires from $671

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 to Buenos Aires departing on 12/5. 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 London to Buenos Aires

Cheap round-trip flights

Avianca Logo
10:05 pm - 12:10 amLHR-EZE
30h 05m1 stop
Avianca Logo
1:40 am - 3:35 pmEZE-LHR
33h 55m1 stop
$1,019Avianca
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Tue, Sep 2 - Sat, Sep 27
Avianca Logo
9:40 pm - 3:50 pmLHR-EZE
21h 10m1 stop
Avianca Logo
4:55 pm - 2:35 pmEZE-LHR
18h 40m1 stop
$1,022Avianca
Find Deal
Sat, Nov 15 - Sun, Nov 30
Turkish Airlines Logo
6:25 am - 10:25 pmLGW-EZE
43h 00m2 stops
Turkish Airlines Logo
11:55 pm - 4:10 pmEZE-LGW
37h 15m2 stops
$1,024Turkish Airlines
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Thu, Nov 6 - Thu, Nov 27
Lufthansa Logo
11:30 am - 7:55 amLHR-EZE
23h 25m1 stop
Lufthansa Logo
5:45 pm - 12:50 pmEZE-LHR
16h 05m1 stop
$1,072Lufthansa
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Wed, Nov 19 - Tue, Nov 25
American Airlines Logo
2:30 pm - 9:00 amLHR-EZE
21h 30m1 stop
American Airlines Logo
11:20 pm - 6:50 amEZE-LHR
28h 30m1 stop
$1,182American Airlines
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Thu, Dec 4 - Tue, Dec 9
American Airlines Logo
3:05 pm - 10:15 amLGW-EZE
23h 10m1 stop
American Airlines Logo
9:15 pm - 8:10 amEZE-LGW
30h 55m1 stop
$1,185American Airlines
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Thu, Oct 2 - Thu, Oct 9
British Airways Logo
9:10 am - 5:55 pmLCY-EZE
35h 45m1 stop
British Airways Logo
7:30 pm - 2:35 pmEZE-LCY
16h 05m1 stop
$1,277British Airways
Find Deal
Mon, Jan 19 - Mon, Feb 9
British Airways Logo
7:40 pm - 5:55 pmLGW-EZE
25h 15m1 stop
British Airways Logo
7:30 pm - 7:00 pmEZE-LGW
20h 30m1 stop
$1,278British Airways
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Sun, Jan 18 - Mon, Feb 9
Air Europa Logo
5:25 pm - 8:50 amLGW-EZE
18h 25m1 stop
Air Europa Logo
1:15 pm - 4:25 pmEZE-LGW
24h 10m1 stop
$1,348Air Europa
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Sat, Nov 8 - Sat, Nov 15
Air Europa Logo
10:00 am - 8:50 amLGW-EZE
25h 50m1 stop
Air Europa Logo
1:15 pm - 4:25 pmEZE-LGW
24h 10m1 stop
$1,401Air Europa
Find Deal
Thu, Nov 13 - Mon, Nov 17

LEVEL flights from London to Buenos Aires

Our best LEVEL deals on London to Buenos Aires flight tickets
LEVEL
Nov 15
LGW4:55 pmLondon Gatwick
28h 00m
1 stop
EZE5:55 pmBuenos Aires Ministro Pistarini
Nov 29
EZE9:00 pmBuenos Aires Ministro Pistarini
22h 35m
1 stop
LGW10:35 pmLondon Gatwick
$1,157
Find similar
LEVEL
Nov 22
LGW1:10 pmLondon Gatwick
31h 45m
1 stop
EZE5:55 pmBuenos Aires Ministro Pistarini
Dec 6
EZE9:00 pmBuenos Aires Ministro Pistarini
22h 35m
1 stop
LGW10:35 pmLondon Gatwick
$1,216
Find similar
LEVEL
Nov 21
LGW9:45 pmLondon Gatwick
24h 25m
1 stop
EZE7:10 pmBuenos Aires Ministro Pistarini
Nov 29
EZE1:00 pmBuenos Aires Ministro Pistarini
26h 50m
1 stop
LGW6:50 pmLondon Gatwick
$1,262
Find similar

British Airways flights from London to Buenos Aires

Our best British Airways deals on London to Buenos Aires flight tickets
British Airways
Jan 19
LCY9:10 amLondon City
35h 45m
1 stop
EZE5:55 pmBuenos Aires Ministro Pistarini
Feb 9
EZE7:30 pmBuenos Aires Ministro Pistarini
16h 05m
1 stop
LCY2:35 pmLondon City
$1,277
Find similar
British Airways
Jan 18
LGW7:40 pmLondon Gatwick
25h 15m
1 stop
EZE5:55 pmBuenos Aires Ministro Pistarini
Feb 9
EZE7:30 pmBuenos Aires Ministro Pistarini
20h 30m
1 stop
LGW7:00 pmLondon Gatwick
$1,278
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momondo Fare Finder

 
Customize your flight search to find flights from London to Buenos Aires 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 August 18, 2025.
Use the filters below to find and compare flights from London to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 9/2

10:05 pm-12:10 am

1 stop30h 05m

Buenos Aires Ministro Pistarini

Sat 9/27

1:40 am-3:35 pm

1 stop33h 55m

$1,019

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 11/15

9:40 pm-3:50 pm

1 stop21h 10m

Buenos Aires Ministro Pistarini

Sun 11/30

4:55 pm-2:35 pm

1 stop18h 40m

$1,022

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Thu 11/6

6:25 am-10:25 pm

2 stops43h 00m

Buenos Aires Ministro Pistarini

Thu 11/27

11:55 pm-4:10 pm

2 stops37h 15m

$1,024

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 11/19

11:30 am-7:55 am

1 stop23h 25m

Buenos Aires Ministro Pistarini

Tue 11/25

5:45 pm-12:50 pm

1 stop16h 05m

$1,072

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 12/4

2:30 pm-9:00 am

1 stop21h 30m

Buenos Aires Ministro Pistarini

Tue 12/9

11:20 pm-6:50 am

1 stop28h 30m

$1,182

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Thu 10/2

3:05 pm-10:15 am

1 stop23h 10m

Buenos Aires Ministro Pistarini

Thu 10/9

9:15 pm-8:10 am

1 stop30h 55m

$1,185

LondonBuenos Aires

LCY - EZE

LCYEZE

London City

Mon 1/19

9:10 am-5:55 pm

1 stop35h 45m

Buenos Aires Ministro Pistarini

Mon 2/9

7:30 pm-2:35 pm

1 stop16h 05m

$1,277

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Sun 1/18

7:40 pm-5:55 pm

1 stop25h 15m

Buenos Aires Ministro Pistarini

Mon 2/9

7:30 pm-7:00 pm

1 stop20h 30m

$1,278

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Sat 11/8

5:25 pm-8:50 am

1 stop18h 25m

Buenos Aires Ministro Pistarini

Sat 11/15

1:15 pm-4:25 pm

1 stop24h 10m

$1,348

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Thu 11/13

10:00 am-8:50 am

1 stop25h 50m

Buenos Aires Ministro Pistarini

Mon 11/17

1:15 pm-4:25 pm

1 stop24h 10m

$1,401

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 Buenos Aires from

How to get the cheapest flight ticket from London to Buenos Aires

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 Buenos Aires?

The cheapest month to fly to Buenos Aires from London is in March. Flight prices, which tend to average around $1,129, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Buenos Aires from London during November instead. Flights to Buenos Aires in November, while not as cheap as those in March, still average around $1,136.

What is the cheapest time of day to depart on your flight to Buenos Aires?

Our most recent data shows that the best time of day to fly to Buenos Aires is in the afternoon. Flights from London to Buenos Aires during this time can be as low as $1,156. Try not to purchase tickets at noon because they tend to be around $1,377. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London to Buenos Aires flight route?

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

How far in advance should I book a flight to Buenos Aires?

You are more likely to see cheaper flights to Buenos Aires from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,357 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from London for as low as $1,213 on momondo.

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

There are 2 cabin classes available to choose from on London to Buenos Aires flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of August 2025, prices for London to Buenos Aires flights are approximately 18% more expensive when compared to flights at the same time last year.

When to book flights from London to Buenos Aires

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

Cheap London to Buenos Aires (LON to BUE) flight deals and tips

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

Best Price Found

$671

Fastest flight time

15h 40m

Direct flights

None

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from London in the past 72 hours is $671. The best round-trip flight deal from London to Buenos Aires found on momondo in the last 72 hours is $1,019.
The fastest flight from London to Buenos Aires takes 15h 40m
There are no direct flights from London to Buenos Aires. Popular non-direct routes for this connection are London Gatwick Airport - Buenos Aires Ministro Pistarini Airport, London Heathrow Airport - Buenos Aires Jorge Newbery Airport and London Heathrow Airport - Buenos Aires Ministro Pistarini Airport.
There are 2 airports near Buenos Aires: Buenos Aires Ministro Pistarini (EZE), Buenos Aires Jorge Newbery (AEP)
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  • How far is London to Buenos Aires by plane?

    Buenos Aires is 6909.8 mi away from London. A reasonable flight in good conditions will take 15h 40m.

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

    Prices for flights from London to Buenos Aires refresh daily.

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

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

    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 London to Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The travel and health documents required for your trip to Buenos Aires can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buenos Aires. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

Best airlines flying from London to Buenos Aires

Compare and see reviews for airlines that fly from London to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $1,021Free CancellationRating
7.0
2,884 reviews
Search Iberia flights

  • Iberia Flights From London to Buenos Aires

    Across 7 Iberia flights from London to Buenos Aires this week, the average price was $1,299, with the best Iberia deals starting from $1,021 round-trip. 2,884 users have rated Iberia on momondo, with an average score of 7.0/10.

Why use momondo?

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

Finding the right flight to Buenos Aires from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Buenos Aires quick and easy, saving you time and money.

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

All flight searches from London to Buenos Aires on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Buenos Aires.

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

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

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 17.0 mi from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport