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Cheap flights from Buenos Aires to London from £449

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUE — LON
26 Mar — 2 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buenos Aires to London

Enter your travel dates to find the best prices.

Cheapest flights from Buenos Aires to London
Explore the most affordable flight options available from Buenos Aires to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 February 2026.

Wed 6/516:35
EZE
-
LHR
2 stops36h 00m
Air Canada
Tue 19/517:40
LHR
-
EZE
2 stops24h 50m
Air Canada
Deal found 22/2£758
Wed 9/916:35
EZE
-
LHR
2 stops36h 00m
Air Canada
Tue 15/909:30
LHR
-
EZE
3 stops33h 00m
Air Canada
Deal found 21/2£771
Mon 23/322:55
EZE
-
LHR
1 stop32h 20m
United Airlines
Mon 30/313:40
LHR
-
EZE
1 stop22h 20m
United Airlines
Deal found 23/2£802
Tue 22/913:25
EZE
-
STN
1 stop18h 15m
Multiple Airlines
Wed 14/1012:05
STN
-
EZE
1 stop22h 40m
Multiple Airlines
Deal found 21/2£802
Wed 23/916:35
EZE
-
LHR
2 stops36h 00m
Air Canada
Tue 29/912:40
LHR
-
EZE
3 stops29h 50m
Air Canada
Deal found 23/2£804
Mon 16/322:55
EZE
-
LHR
1 stop29h 35m
United Airlines
Thu 26/312:05
LHR
-
EZE
1 stop23h 15m
United Airlines
Deal found 24/2£805
Thu 24/913:25
EZE
-
STN
1 stop17h 45m
Multiple Airlines
Wed 14/1012:05
STN
-
EZE
1 stop22h 40m
Multiple Airlines
Deal found 21/2£809
Sun 19/421:00
EZE
-
LHR
1 stop30h 40m
United Airlines
Tue 5/511:25
LHR
-
EZE
2 stops24h 35m
United Airlines
Deal found 23/2£814
Mon 16/322:55
EZE
-
LHR
1 stop29h 35m
United Airlines
Thu 17/910:00
LHR
-
EZE
1 stop26h 00m
United Airlines
Deal found 23/2£814
Thu 26/321:05
EZE
-
LHR
1 stop34h 10m
United Airlines
Wed 8/413:40
LHR
-
EZE
1 stop22h 20m
United Airlines
Deal found 24/2£815
Wed 25/321:05
EZE
-
LHR
1 stop34h 10m
United Airlines
Fri 4/1212:05
LHR
-
EZE
1 stop22h 15m
United Airlines
Deal found 24/2£816
Sun 26/411:30
EZE
-
STN
2 stops25h 25m
Multiple Airlines
Sat 9/508:45
STN
-
EZE
2 stops20h 15m
Multiple Airlines
Deal found 21/2£817

Find flight deals from Buenos Aires to London

Discover tips and strategies to find the most affordable flight options for your journey from Buenos Aires (BUE) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 24 February 2026.

Round-trip from

£758

One-way from

£449

Popular in

January

Cheapest in

February

Average price

£981
Air Canada
  • Air Canada
  • 6/5-19/5
  • 4 total stops
  • 60h 50m total
  • Buenos Aires to London
Search Deals
15/4
  • 15/4
  • 3 total stops
  • 48h 40m total
  • Buenos Aires to London
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£29 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Buenos Aires to London 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, Cheapflights users made 858,174 searches. Data last updated 24 February 2026.
Use the filters below to find and compare flights from Buenos Aires to London that are best for you.

Fly from

Buenos Aires

Fly to

London

Route

Depart

Return

Price

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Mon 16/3

21:05-09:40

2 stops33h 35m

London Heathrow

Thu 26/3

12:05-08:20

1 stop23h 15m

£808

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Tue 28/4

21:00-07:40

1 stop30h 40m

London Heathrow

Fri 8/5

10:00-08:00

1 stop26h 00m

£817

Buenos AiresLondon

AEP - LTN

AEPLTN

Buenos Aires Jorge Newbery

Mon 9/3

14:55-21:40

2 stops27h 45m

London Luton

Mon 16/3

07:05-14:00

2 stops33h 55m

£858

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Mon 23/3

22:55-09:40

2 stops55h 45m

London Heathrow

Mon 30/3

13:40-08:00

1 stop22h 20m

£886

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Sun 12/4

21:00-07:40

1 stop30h 40m

London Heathrow

Sun 3/5

10:00-08:00

1 stop26h 00m

£902

Buenos AiresLondon

EZE - LGW

EZELGW

Buenos Aires Ministro Pistarini

Wed 19/8

12:10-16:25

1 stop24h 15m

London Gatwick

Tue 25/8

17:25-07:40

1 stop18h 15m

£914

Buenos AiresLondon

AEP - LTN

AEPLTN

Buenos Aires Jorge Newbery

Mon 9/3

07:00-12:15

2 stops26h 15m

London Luton

Thu 19/3

06:05-05:40

2 stops26h 35m

£943

Buenos AiresLondon

AEP - LTN

AEPLTN

Buenos Aires Jorge Newbery

Tue 14/4

17:05-23:45

2 stops26h 40m

London Luton

Wed 29/4

18:10-19:40

2 stops29h 30m

£944

Buenos AiresLondon

AEP - LTN

AEPLTN

Buenos Aires Jorge Newbery

Wed 15/4

15:45-19:00

2 stops23h 15m

London Luton

Sat 2/5

08:00-14:50

2 stops34h 50m

£951

Buenos AiresLondon

AEP - LHR

AEPLHR

Buenos Aires Jorge Newbery

Wed 12/8

07:00-20:05

2 stops33h 05m

London Heathrow

Wed 26/8

20:50-05:40

2 stops36h 50m

£956

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 60 results
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Best time to book a flight from Buenos Aires to London

Have a flexible travel schedule? Discover the best time to fly to London from Buenos Aires with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Buenos Aires to London

How far ahead should I book a flight from Buenos Aires to London?

Use this chart to determine the optimal time to book a return flight from Buenos Aires to London. Price data was last updated on 20 February 2026.

The best time to book flights from Buenos Aires to London is 76 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Buenos Aires to London?

Currently, February is the cheapest month in which you can book a flight from Buenos Aires to London (average of £70). Flying from Buenos Aires to London in December is currently the most expensive (average of £1,029). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BUE to LON?

Find hourly flight availability from Buenos Aires to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 24 February 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Buenos Aires to London as you normally would.

Weekly flight availability from Buenos Aires to London

Explore weekly flight availability from Buenos Aires to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 24 February 2026.

The most flights from BUE to LON are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

How much does it cost for a return flight from Buenos Aires to London?

What’s the top stopover airport for flights from Buenos Aires to London?

Share of one-stop return flights from Buenos Aires to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Madrid (MAD) – chosen by Cheapflights users on 28% of one-stop itineraries from Buenos Aires to London on Cheapflights.

What’s the cheapest stopover airport for flights from Buenos Aires to London?

Average return fare for one-stop flights from Buenos Aires to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Houston (IAH) is the most affordable one-stop option, with an average return flight price of £797.

What’s the fastest stopover option from Buenos Aires to London?

Shortest average travel time for one-stop one-way flights from Buenos Aires to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Madrid (MAD) have the shortest average one-way travel time for one-stop routes: 15h 21m.

Which airport typically offers the quickest stopover for flights from Buenos Aires to London?

Average stopover duration for one-stop one-way flights from Buenos Aires to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Madrid (MAD) offer the fastest connection on this route, with an average stopover time of 1h 13m.

How often are flights from Buenos Aires to London delayed?

About 40% of weekly flights between Buenos Aires and London have experienced delays in the past year, with the average delay time being 139 minutes.

What is the most punctual flight time for Buenos Aires to London flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 24 February 2026.
Check out reviews from past customers who have flown with LATAM Airlines, Air France, andIberia from Buenos Aires to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
LATAM Airlines
7.5
Good
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.5

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
LATAM Airlines
7.5
Good
1,918 reviews
LATAM Airlines
7.5
Good
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.5

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
Air France
7.4
Good
1,537 reviews
LATAM Airlines
7.5
Good
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.5

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
Iberia
7.0
Good
3,123 reviews
LATAM Airlines
7.5
Good
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.5

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
Air Europa
6.9
Okay
590 reviews
LATAM Airlines
7.5
Good
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.5

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
British Airways
6.7
Okay
7,764 reviews
LATAM Airlines
7.5
Good
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.5

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.

Related info for your journey

Find useful and relevant information for your journey from Buenos Aires to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Buenos Aires to London?

    Departing from Buenos Aires to London will take you 24h 15m. There are 6908 mi between Buenos Aires and London. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from Buenos Aires to London round-trip?

    British Airways, at £994, was found to be the cheapest airline from Buenos Aires to London. An alternate airline flying to your destination would be Iberia. British Airways is priced at 15% lower than the current average price of a flight leaving 3 months from now.

  • What are the most popular routes from Buenos Aires to London?

    When deciding which route to take from Buenos Aires to London consider Buenos Aires Ministro Pistarini - London Heathrow, Buenos Aires Ministro Pistarini - London City or Buenos Aires Ministro Pistarini - London Gatwick as they are the most popular.

  • Can I find deals for flights from Buenos Aires to London that include hotel bookings?

    Yes. In addition to deals on Buenos Aires to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Buenos Aires to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buenos Aires to London.

  • Can I find deals for business class flights from Buenos Aires to London?

    Yes. Cheapflights offers flight deals from Buenos Aires to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Buenos Aires to London?

    Currently, February is the cheapest month in which you can book a flight from Buenos Aires to London (average of £70). Flying from Buenos Aires to London in December is currently the most expensive (average of £1,029). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Milton Keynes
Croydon
Wembley
Luton
Gatwick
Slough
Hounslow
Ilford
Hayes
Brentford
Colchester
Watford
Guildford
Kingston upon Thames
Eastbourne
Ipswich
Chelmsford
Bedford
Romford
Folkestone

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Buenos Aires to London

Discover the top 2 airlines that operate flights from Buenos Aires to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 24 February 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£994Average£1,370FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£1,086Average£1,186FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Buenos Aires to London?

Deals for Buenos Aires to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Buenos Aires to London?

Cheapflights simply makes it quick and affordable to book flights from Buenos Aires to London by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Buenos Aires to London with no change fees?

Certainly. Search results for flights to London from Buenos Aires shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Buenos Aires to London become cheaper?

Not ready to book yet? You can track prices for flights from Buenos Aires to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

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