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Cheap flights from Buenos Aires to London from £424

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
BUE — LON
4 Apr — 11 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 5 March 2026.

Wed 7/1016:35
EZE
-
LHR
2 stops34h 00m
Air Canada
Tue 10/1111:10
LHR
-
EZE
2 stops31h 00m
Air Canada
Deal found 28/2£771
Thu 15/1016:35
EZE
-
LHR
2 stops33h 55m
Air Canada
Sat 14/1109:00
LHR
-
EZE
2 stops57h 10m
Air Canada
Deal found 4/3£777
Mon 12/1016:35
EZE
-
LHR
2 stops36h 00m
Air Canada
Tue 17/1113:00
LHR
-
EZE
2 stops29h 10m
Air Canada
Deal found 4/3£785
Mon 12/1016:35
EZE
-
LHR
2 stops34h 00m
Air Canada
Tue 3/1111:10
LHR
-
EZE
2 stops31h 00m
Air Canada
Deal found 4/3£788
Mon 5/1016:35
EZE
-
LHR
2 stops36h 00m
Air Canada
Mon 26/1013:25
LHR
-
EZE
3 stops52h 45m
Air Canada
Deal found 3/3£791
Wed 23/916:35
EZE
-
LHR
3 stops48h 25m
Air Canada
Sat 31/1009:00
LHR
-
EZE
3 stops57h 10m
Air Canada
Deal found 28/2£800
Mon 12/1016:35
EZE
-
LHR
2 stops34h 00m
Air Canada
Thu 29/1018:00
LHR
-
EZE
2 stops24h 10m
Air Canada
Deal found 4/3£808
Wed 6/516:35
EZE
-
LHR
3 stops48h 25m
Air Canada
Tue 19/508:30
LHR
-
EZE
2 stops34h 00m
Air Canada
Deal found 3/3£809
Sun 8/321:05
EZE
-
LHR
1 stop31h 25m
United Airlines
Wed 25/310:00
LHR
-
EZE
1 stop25h 20m
United Airlines
Deal found 28/2£812
Sun 8/1113:25
EZE
-
STN
1 stop19h 05m
Multiple Airlines
Sat 28/1116:20
STN
-
EZE
1 stop17h 25m
Multiple Airlines
Deal found 3/3£816
Tue 13/1013:25
EZE
-
STN
1 stop18h 15m
Multiple Airlines
Sat 31/1016:20
STN
-
EZE
1 stop17h 25m
Multiple Airlines
Deal found 28/2£823
Thu 15/1013:25
EZE
-
STN
1 stop21h 35m
Multiple Airlines
Sat 31/1016:20
STN
-
EZE
1 stop17h 25m
Multiple Airlines
Deal found 28/2£827

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 5 March 2026.

Round-trip from

£809

One-way from

£424

Popular in

January

Cheapest in

February

Average price

£1,001
Air Canada
  • Air Canada
  • 6/5-19/5
  • 5 total stops
  • 82h 25m total
  • Buenos Aires to London
Search Deals
United Airlines
  • United Airlines
  • 6/5
  • 2 total stops
  • 29h 55m total
  • Buenos Aires to London
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£30 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 March 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 5 March 2026.
Use the filters below to find and compare flights from Buenos Aires to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Wed 29/4

21:00-07:40

1 stop30h 40m

London Heathrow

Thu 29/10

16:40-08:20

2 stops42h 40m

£825

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

£827

Buenos AiresLondon

EZE - LGW

EZELGW

Buenos Aires Ministro Pistarini

Tue 4/8

12:10-16:25

1 stop24h 15m

London Gatwick

Thu 27/8

10:00-07:40

1 stop25h 40m

£904

Buenos AiresLondon

AEP - LTN

AEPLTN

Buenos Aires Jorge Newbery

Thu 19/3

13:40-23:00

3 stops30h 20m

London Luton

Tue 31/3

05:40-21:20

3 stops43h 40m

£905

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Thu 26/3

22:55-10:15

1 stop32h 20m

London Heathrow

Thu 2/4

13:40-08:00

1 stop22h 20m

£949

Buenos AiresLondon

AEP - LTN

AEPLTN

Buenos Aires Jorge Newbery

Sun 10/5

22:25-00:05

2 stops21h 40m

London Luton

Thu 18/6

08:00-11:30

3 stops31h 30m

£983

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Thu 16/4

21:00-07:40

1 stop30h 40m

London Heathrow

Thu 23/4

13:40-08:00

1 stop22h 20m

£999

Buenos AiresLondon

EZE - LTN

EZELTN

Buenos Aires Ministro Pistarini

Fri 3/4

02:25-18:10

2 stops35h 45m

London Luton

Sat 11/4

08:00-11:30

3 stops31h 30m

£1,014

Buenos AiresLondon

EZE - LHR

EZELHR

Buenos Aires Ministro Pistarini

Wed 29/4

21:00-10:40

2 stops33h 40m

London Heathrow

Thu 28/5

07:25-08:00

2 stops28h 35m

£1,015

Buenos AiresLondon

AEP - LTN

AEPLTN

Buenos Aires Jorge Newbery

Mon 11/5

18:20-21:35

3 stops23h 15m

London Luton

Sun 31/5

08:00-12:40

3 stops32h 40m

£1,035

Flights are sorted by cheapest return flights first.

Deals found on 4/3

Showing 1-10 of 60 resultsSorted by cheapest first
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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 27 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 £1,041). 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 5 March 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 5 March 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).

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 29% 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 £806.

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 5 March 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
7.4
Good
1,916 reviews
Check prices

Food

6.7

Comfort

7.3

Overall

7.4

Entertainment

7.0

Boarding

7.5

Crew

8.0

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
7.4
Good
1,916 reviews
LATAM Airlines
7.4
Good
1,916 reviews
Check prices

Food

6.7

Comfort

7.3

Overall

7.4

Entertainment

7.0

Boarding

7.5

Crew

8.0

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
1,542 reviews
LATAM Airlines
7.4
Good
1,916 reviews
Check prices

Food

6.7

Comfort

7.3

Overall

7.4

Entertainment

7.0

Boarding

7.5

Crew

8.0

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
3,132 reviews
LATAM Airlines
7.4
Good
1,916 reviews
Check prices

Food

6.7

Comfort

7.3

Overall

7.4

Entertainment

7.0

Boarding

7.5

Crew

8.0

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
591 reviews
LATAM Airlines
7.4
Good
1,916 reviews
Check prices

Food

6.7

Comfort

7.3

Overall

7.4

Entertainment

7.0

Boarding

7.5

Crew

8.0

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
7,775 reviews
LATAM Airlines
7.4
Good
1,916 reviews
Check prices

Food

6.7

Comfort

7.3

Overall

7.4

Entertainment

7.0

Boarding

7.5

Crew

8.0

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 18h 10m. There are 6915 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 £1,005, 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 Gatwick or Buenos Aires Ministro Pistarini - London Stansted 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 £1,041). 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
Guildford
Watford
Kingston upon Thames
Eastbourne
Chelmsford
Ipswich
Bedford
Romford
Southend-on-Sea

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 5 March 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£1,005Average£1,386FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£1,098Average£1,200FlexibilityNo 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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