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Cheap flights from London to Buenos Aires from £428

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BUE
17 Apr — 24 Apr1
1 adult

Cheapflights Tip: The best prices from London to Buenos Aires are usually found in May or June, booked 90 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from London to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Buenos Aires (BUE). 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 12 April 2025.

Round-trip from

£828

One-way from

£428

Popular in

December

Cheapest in

May

Average price

£949

Good round-trip deal

£986 or less

Good one-way deal

£772 or less
Air France
  • Air France
  • 3/6-25/6
  • 2 total stops
  • 47h 30m total
  • London to Buenos Aires
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4/6
  • 4/6
  • 2 total stops
  • 26h 10m total
  • London to Buenos Aires
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Highest demand for flights based on searches. 6% potential increase in price (£45 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£24 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from London (LON) to Buenos Aires (BUE).
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Price to beat on a one-way flight from London (LON) to Buenos Aires (BUE).
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Find flight deals from London to Buenos Aires

Cheapest flights from London to Buenos Aires
Explore the most affordable flight options available from London to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 April 2025.

Tue 2/1214:30LHR - EZE
2 stops27h 55mAir Canada
Sun 18/117:00EZE - LHR
2 stops35h 10mAir Canada
Deal found 11/4£820
Tue 3/619:45LHR - EZE
1 stop30h 00mAir France
Wed 25/623:55EZE - LHR
1 stop17h 30mAir France
Deal found 11/4£828
Wed 7/521:20LHR - AEP
1 stop17h 10mLATAM Airlines
Wed 28/518:20AEP - LHR
1 stop16h 45mLATAM Airlines
Deal found 11/4£830
Sun 7/908:55LHR - AEP
3 stops29h 35mSWISS
Tue 30/912:55AEP - LHR
2 stops20h 05mSWISS
Deal found 11/4£832
Wed 26/1122:10LHR - EZE
Nonstop16h 40mMultiple Airlines
Fri 5/1213:35EZE - LHR
Nonstop16h 00mMultiple Airlines
Deal found 11/4£835
Thu 11/915:05LGW - EZE
1 stop23h 10mAmerican Airlines
Tue 23/921:15EZE - LGW
1 stop30h 55mAmerican Airlines
Deal found 11/4£836
Thu 30/1014:30LHR - AEP
2 stops29h 40mAir Canada
Wed 19/1113:35AEP - LHR
2 stops37h 55mAir Canada
Deal found 11/4£838
Thu 6/1110:00LGW - EZE
1 stop25h 50mAir Europa
Tue 25/1113:15EZE - LGW
1 stop24h 10mAir Europa
Deal found 11/4£846
Sun 7/918:40LGW - AEP
2 stops19h 50mSWISS
Tue 30/912:55AEP - LGW
2 stops24h 55mSWISS
Deal found 11/4£846
Tue 13/512:10LHR - EZE
2 stops26h 35mSWISS
Thu 29/506:40EZE - LHR
2 stops29h 45mSWISS
Deal found 11/4£849
Mon 1/1222:10LHR - EZE
1 stop16h 40mIberia
Wed 21/114:20EZE - LHR
1 stop15h 55mIberia
Deal found 11/4£851
Mon 26/516:50LCY - AEP
2 stops37h 30mMultiple Airlines
Sun 1/603:30AEP - LCY
2 stops26h 35mMultiple Airlines
Deal found 11/4£857

Cheapflights Fare Finder

Customise 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, Cheapflights users made 858,174 searches. Data last updated 12 April 2025.
Use the filters below to find and compare flights from London to Buenos Aires that are best for you.

Fly from

London

Fly to

Buenos Aires

Route

Depart

Return

Price

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 3/6

19:45-21:45

1 stop30h 00m

Buenos Aires Ministro Pistarini

Wed 25/6

23:55-21:25

1 stop17h 30m

£828

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Wed 7/5

21:20-10:30

1 stop17h 10m

Buenos Aires Jorge Newbery

Wed 28/5

18:20-15:05

1 stop16h 45m

£830

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sun 7/9

08:55-10:30

3 stops29h 35m

Buenos Aires Jorge Newbery

Tue 30/9

12:55-13:00

2 stops20h 05m

£832

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Thu 11/9

15:05-10:15

1 stop23h 10m

Buenos Aires Ministro Pistarini

Tue 23/9

21:15-08:10

1 stop30h 55m

£836

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 12/9

12:05-14:30

2 stops30h 25m

Buenos Aires Ministro Pistarini

Thu 25/9

16:35-09:35

2 stops37h 00m

£841

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 5/6

21:55-10:35

1 stop16h 40m

Buenos Aires Ministro Pistarini

Thu 12/6

13:00-08:25

1 stop15h 25m

£842

LondonBuenos Aires

LGW - AEP

LGWAEP

London Gatwick

Sun 7/9

18:40-10:30

2 stops19h 50m

Buenos Aires Jorge Newbery

Tue 30/9

12:55-17:50

2 stops24h 55m

£846

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 13/5

12:10-10:45

2 stops26h 35m

Buenos Aires Ministro Pistarini

Thu 29/5

06:40-16:25

2 stops29h 45m

£849

LondonBuenos Aires

LCY - AEP

LCYAEP

London City

Mon 26/5

16:50-02:20

2 stops37h 30m

Buenos Aires Jorge Newbery

Sun 1/6

03:30-10:05

2 stops26h 35m

£857

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Thu 29/5

10:00-07:35

1 stop25h 35m

Buenos Aires Ministro Pistarini

Wed 25/6

12:15-09:00

1 stop16h 45m

£859

Flights are sorted by cheapest return flights first.

Deals found on 10/4

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

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from London 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 London to Buenos Aires

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

Use this chart to determine the optimal time to book a return flight from London to Buenos Aires. Price data was last updated on 11 April 2025.

The price you pay for your flight from London to Buenos Aires may vary depending on when you book. For the best chance of a lower fare, look to book 90 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, June is the cheapest month in which you can book a flight from London to Buenos Aires (average of £979). Flying from London to Buenos Aires in December is currently the most expensive (average of £1,250). 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 LON to BUE?

Find hourly flight availability from London to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 April 2025.

It’s optimal to fly from London to Buenos Aires in the afternoon. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from London to Buenos Aires?

Use this chart to determine the cheapest time to fly return from London to Buenos Aires. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London to Buenos Aires flight should consider departing on Monday mornings when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Buenos Aires ranges from 50.0 - 100.0 inches per month. January is typically the wettest month, when rainfall can reach 100.0 mm. June is typically the driest time to visit Buenos Aires when rainfall is around 50.0 mm.

Temperature in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. 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 Buenos Aires. Reviews last updated 12 April 2025.
Get a feel of what it's like to fly with Aerolineas Argentinas, Emirates and Delta from London to Buenos Aires by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aerolineas Argentinas
8.0
Very Good
852 reviews
Check prices

Food

6.4

Boarding

8.0

Overall

8.0

Comfort

7.5

Crew

8.3

Entertainment

5.7

Reviews

1 / 4
10.0
Excellent

Firuz,Dec 2024

EZE - SLA

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.
Aerolineas Argentinas
8.0
Very Good
852 reviews
Aerolineas Argentinas
8.0
Very Good
852 reviews
Check prices

Food

6.4

Boarding

8.0

Overall

8.0

Comfort

7.5

Crew

8.3

Entertainment

5.7

Reviews

1 / 4
10.0
Excellent

Firuz,Dec 2024

EZE - SLA

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.
Emirates
8.0
Very Good
3,197 reviews
Aerolineas Argentinas
8.0
Very Good
852 reviews
Check prices

Food

6.4

Boarding

8.0

Overall

8.0

Comfort

7.5

Crew

8.3

Entertainment

5.7

Reviews

1 / 4
10.0
Excellent

Firuz,Dec 2024

EZE - SLA

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.
Delta
8.0
Very Good
7,912 reviews
Aerolineas Argentinas
8.0
Very Good
852 reviews
Check prices

Food

6.4

Boarding

8.0

Overall

8.0

Comfort

7.5

Crew

8.3

Entertainment

5.7

Reviews

1 / 4
10.0
Excellent

Firuz,Dec 2024

EZE - SLA

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.
KLM
7.8
Good
1,321 reviews
Aerolineas Argentinas
8.0
Very Good
852 reviews
Check prices

Food

6.4

Boarding

8.0

Overall

8.0

Comfort

7.5

Crew

8.3

Entertainment

5.7

Reviews

1 / 4
10.0
Excellent

Firuz,Dec 2024

EZE - SLA

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.
Finnair
7.6
Good
1,269 reviews
Aerolineas Argentinas
8.0
Very Good
852 reviews
Check prices

Food

6.4

Boarding

8.0

Overall

8.0

Comfort

7.5

Crew

8.3

Entertainment

5.7

Reviews

1 / 4
10.0
Excellent

Firuz,Dec 2024

EZE - SLA

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.

Related info for your journey

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

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

    Our cheapest airline available from London to Buenos Aires is Air France. Our recent data shows that you can find tickets from as low as £828 on this airline. Additional options worth looking into are LATAM Airlines and SWISS, starting at £830 and £832 round-trip. Air France is 9% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from London to Buenos Aires one-way?

    One-way options have recently been found by users for as low as £430 on Vueling. Other airlines that offer cheap prices include Avianca from £538 and United Airlines from £557 one-way.

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

    Most travelers choose London Heathrow - Buenos Aires Ministro Pistarini, London Heathrow - Buenos Aires Jorge Newbery or London Gatwick - Buenos Aires Ministro Pistarini when deciding on the best route from London to Buenos Aires.

  • What are the cheapest flights from London to Buenos Aires?

    The cheapest flight price from London to Buenos Aires is £715. On average you can expect to pay £1,194. The most popular route, (London Heathrow - Buenos Aires Ministro Pistarini), can usually be booked for £779.

  • Where are the most common stopover locations when flying from London to Buenos Aires?

    Flights departing from London and landing in Buenos Aires stopover in Madrid most frequently.

  • What are some popular things to do or see while on a stopover in Madrid?

    Spain Building, Plaza Mayor, and Puerta del Sol are currently the most popular points of interest in Madrid at the moment. Those on a stopover in Madrid interested in visiting Spain Building, Plaza Mayor, or Puerta del Sol can do so by traveling 8.5 mi, 8.6 mi, and 8.4 mi, respectively from Madrid Barajas. Travellers can book a car hire at Madrid Barajas for about £22 per day to make their sightseeing more efficient.

  • Where are the least popular stopover locations for London to Buenos Aires flights?

    London to Buenos Aires flights that have stopovers will least frequently stop in New York.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to Buenos Aires 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 London to Buenos Aires?

    Currently, June is the cheapest month in which you can book a flight from London to Buenos Aires (average of £979). Flying from London to Buenos Aires in December is currently the most expensive (average of £1,250). 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

Browse thousands of different options on Cheapflights for your next trip

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Fly from London to Buenos Aires on these airlines

Choose from the following airlines for your flight from London to Buenos Aires. Flights are based on user searches made on Cheapflights and were last updated on 12 April 2025.
Air Europa flights from London to Buenos Aires
British Airways flights from London to Buenos Aires
Iberia flights from London to Buenos Aires

Top 10 airlines flying from London to Buenos Aires

Discover the top 10 airlines that operate flights from London to Buenos Aires. 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 12 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£459Average£1,064FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air EuropaCheapest£599Average£741FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
ITA AirwaysCheapest£635Average£1,055FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
Air CanadaCheapest£662Average£694FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£709Average£1,064FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IberiaCheapest£714Average£898FlexibilityNo cancel feeOn-time77%
Search Iberia flights
FinnairCheapest£757Average£836FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£773Average£1,035FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£858Average£1,176FlexibilityNo cancel feeOn-time75%
Search KLM flights
LATAM AirlinesCheapest£891Average£1,214FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines 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 London to Buenos Aires?

Deals for London to Buenos Aires 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 London to Buenos Aires?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Buenos Aires from London.

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

Yes, we can. To see specific flights from London to Buenos Aires with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

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

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