Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London to Buenos Aires from $714

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 1/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London to Buenos Aires

Cheap round-trip flights

Avianca Logo
9:40 pm - 3:50 pmLHR-EZE
21h 10m1 stop
Avianca Logo
7:35 am - 2:35 pmEZE-LHR
28h 00m1 stop
$979Avianca
Find Deal
Mon, Nov 10 - Fri, Nov 28
Avianca Logo
9:40 pm - 3:50 pmLHR-EZE
21h 10m1 stop
Avianca Logo
4:55 pm - 2:35 pmEZE-LHR
18h 40m1 stop
$980Avianca
Find Deal
Mon, Nov 10 - Fri, Nov 28
Lufthansa Logo
3:30 pm - 7:55 amLHR-EZE
19h 25m1 stop
Lufthansa Logo
5:45 pm - 3:50 pmEZE-LHR
19h 05m1 stop
$1,112Lufthansa
Find Deal
Thu, Mar 12 - Thu, Mar 26
Lufthansa Logo
6:30 pm - 7:55 amLHR-EZE
16h 25m1 stop
Lufthansa Logo
5:45 pm - 3:50 pmEZE-LHR
19h 05m1 stop
$1,113Lufthansa
Find Deal
Thu, Mar 12 - Fri, Mar 27
British Airways Logo
3:50 pm - 7:35 amLHR-EZE
19h 45m1 stop
British Airways Logo
1:35 pm - 8:35 amEZE-LHR
16h 00m1 stop
$1,122British Airways
Find Deal
Tue, Oct 7 - Wed, Nov 5
British Airways Logo
7:10 pm - 7:35 amLHR-EZE
16h 25m1 stop
British Airways Logo
1:35 pm - 8:35 amEZE-LHR
16h 00m1 stop
$1,126British Airways
Find Deal
Mon, Oct 6 - Wed, Nov 5
Air Europa Logo
10:00 am - 8:50 amLGW-EZE
25h 50m1 stop
Air Europa Logo
12:15 pm - 9:00 amEZE-LGW
16h 45m1 stop
$1,164Air Europa
Find Deal
Sun, Mar 15 - Sun, Mar 29
American Airlines Logo
2:30 pm - 9:39 amLHR-EZE
22h 09m1 stop
American Airlines Logo
11:59 pm - 8:15 amEZE-LHR
29h 16m1 stop
$1,182American Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7
American Airlines Logo
5:00 pm - 10:15 amLHR-EZE
21h 15m1 stop
American Airlines Logo
8:30 pm - 6:55 amEZE-LHR
30h 25m1 stop
$1,184American Airlines
Find Deal
Sat, Oct 11 - Sat, Oct 18
Air Europa Logo
5:25 pm - 8:50 amLGW-EZE
18h 25m1 stop
Air Europa Logo
1:15 pm - 9:00 amEZE-LGW
16h 45m1 stop
$1,245Air Europa
Find Deal
Sat, Mar 7 - Tue, Mar 24

Avianca flights from London to Buenos Aires

Our best Avianca deals on London to Buenos Aires flight tickets
Avianca
Nov 10
LHR9:40 pmLondon Heathrow
21h 10m
1 stop
EZE3:50 pmBuenos Aires Ministro Pistarini
Nov 28
EZE7:35 amBuenos Aires Ministro Pistarini
28h 00m
1 stop
LHR2:35 pmLondon Heathrow
$979
Find similar
Avianca
Nov 10
LHR9:40 pmLondon Heathrow
21h 10m
1 stop
EZE3:50 pmBuenos Aires Ministro Pistarini
Nov 28
EZE4:55 pmBuenos Aires Ministro Pistarini
18h 40m
1 stop
LHR2:35 pmLondon Heathrow
$980
Find similar
Avianca
Nov 12
LHR9:40 pmLondon Heathrow
35h 10m
1 stop
EZE5:50 amBuenos Aires Ministro Pistarini
Nov 16
EZE1:40 amBuenos Aires Ministro Pistarini
33h 55m
1 stop
LHR2:35 pmLondon Heathrow
$982
Find similar

Air Europa flights from London to Buenos Aires

Our best Air Europa deals on London to Buenos Aires flight tickets
Air Europa
Mar 15
LGW10:00 amLondon Gatwick
25h 50m
1 stop
EZE8:50 amBuenos Aires Ministro Pistarini
Mar 29
EZE12:15 pmBuenos Aires Ministro Pistarini
16h 45m
1 stop
LGW9:00 amLondon Gatwick
$1,164
Find similar
Air Europa
Mar 7
LGW5:25 pmLondon Gatwick
18h 25m
1 stop
EZE8:50 amBuenos Aires Ministro Pistarini
Mar 24
EZE1:15 pmBuenos Aires Ministro Pistarini
16h 45m
1 stop
LGW9:00 amLondon Gatwick
$1,245
Find similar
Air Europa
Mar 7
LGW5:25 pmLondon Gatwick
18h 25m
1 stop
EZE8:50 amBuenos Aires Ministro Pistarini
Mar 24
EZE1:15 pmBuenos Aires Ministro Pistarini
24h 10m
1 stop
LGW4:25 pmLondon Gatwick
$1,246
Find similar

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 September 17, 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

Mon 11/10

9:40 pm-3:50 pm

1 stop21h 10m

Buenos Aires Ministro Pistarini

Fri 11/28

7:35 am-2:35 pm

1 stop28h 00m

$979

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 11/10

9:40 pm-3:50 pm

1 stop21h 10m

Buenos Aires Ministro Pistarini

Fri 11/28

4:55 pm-2:35 pm

1 stop18h 40m

$980

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 3/12

3:30 pm-7:55 am

1 stop19h 25m

Buenos Aires Ministro Pistarini

Thu 3/26

5:45 pm-3:50 pm

1 stop19h 05m

$1,112

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 3/12

6:30 pm-7:55 am

1 stop16h 25m

Buenos Aires Ministro Pistarini

Fri 3/27

5:45 pm-3:50 pm

1 stop19h 05m

$1,113

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 10/7

3:50 pm-7:35 am

1 stop19h 45m

Buenos Aires Ministro Pistarini

Wed 11/5

1:35 pm-8:35 am

1 stop16h 00m

$1,122

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 10/6

7:10 pm-7:35 am

1 stop16h 25m

Buenos Aires Ministro Pistarini

Wed 11/5

1:35 pm-8:35 am

1 stop16h 00m

$1,126

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Sun 3/15

10:00 am-8:50 am

1 stop25h 50m

Buenos Aires Ministro Pistarini

Sun 3/29

12:15 pm-9:00 am

1 stop16h 45m

$1,164

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 10/31

2:30 pm-9:39 am

1 stop22h 09m

Buenos Aires Ministro Pistarini

Fri 11/7

11:59 pm-8:15 am

1 stop29h 16m

$1,182

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 10/11

5:00 pm-10:15 am

1 stop21h 15m

Buenos Aires Ministro Pistarini

Sat 10/18

8:30 pm-6:55 am

1 stop30h 25m

$1,184

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Sat 3/7

5:25 pm-8:50 am

1 stop18h 25m

Buenos Aires Ministro Pistarini

Tue 3/24

1:15 pm-9:00 am

1 stop16h 45m

$1,245

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 typical price of a round-trip flight between London and Buenos Aires?

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 $1,136, 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 May instead. Flights to Buenos Aires in May, while not as cheap as those in March, still average around $1,160.

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 $1,355 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 $1,165 on momondo.

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

There is only 1 cabin class 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 September 2025, prices for London to Buenos Aires flights are approximately 4% 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

Direct flights

None
There are no direct flights from London to Buenos Aires. There are no popular flight routes from London to Buenos Aires.
Search flight deals

  • 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 16h 00m.

  • 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
2,925 reviews
Search Iberia flights

  • Iberia Flights From London to Buenos Aires

    Across 6 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. 2,925 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.

An easier way to manage your Buenos Aires trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 10/17
Fri 10/24
By creating a price alert you accept our terms of use and privacy policy.

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