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Cheap flights from the United Kingdom to Buenos Aires from £439

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
31 Aug — 7 Sep1
1 adult

Cheap flight deals from United Kingdom to Buenos Aires

Keep the following information in mind while searching for United Kingdom to Buenos Aires flight deals. Data was last updated 26 August 2025.

Round-trip from

£720

One-way from

£439

Popular in

December

Cheapest in

March

Average price

£1,050

Good round-trip deal

£1,194 or less
Avianca
  • Avianca
  • 10/11-4/12
  • 2 total stops
  • 39h 50m total
  • United Kingdom to Buenos Aires
Search Deals
3/12
  • 3/12
  • 3 total stops
  • 47h 54m total
  • United Kingdom to Buenos Aires
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£35 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
Search Deals
Price to beat on a round-trip flight from United Kingdom to Buenos Aires (BUE).
Search Deals

Find flight deals from United Kingdom to Buenos Aires

Cheapest flights from United Kingdom to Buenos Aires
Explore the most affordable flight options available from United Kingdom to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2025.

Mon 10/1121:40LHR - EZE
1 stop21h 10mAvianca
Tue 2/1207:35EZE - LHR
1 stop28h 00mAvianca
Deal found 25/8£720
Fri 12/908:30LHR - EZE
1 stop25h 55mLufthansa
Tue 21/1016:40EZE - LHR
1 stop18h 00mLufthansa
Deal found 25/8£724
Sat 1/1121:40LHR - EZE
1 stop21h 10mAvianca
Sun 23/1116:55EZE - LHR
1 stop18h 40mAvianca
Deal found 25/8£725
Tue 18/1121:40LHR - EZE
1 stop21h 10mAvianca
Tue 9/1207:35EZE - LHR
1 stop28h 00mAvianca
Deal found 24/8£726
Thu 18/922:05LHR - EZE
1 stop30h 05mAvianca
Sun 19/1001:40EZE - LHR
1 stop33h 55mAvianca
Deal found 25/8£728
Sat 13/922:05LHR - EZE
1 stop30h 05mAvianca
Fri 10/1001:40EZE - LHR
1 stop33h 55mAvianca
Deal found 24/8£729
Thu 20/1121:40LHR - EZE
1 stop21h 10mAvianca
Sat 6/1216:55EZE - LHR
1 stop18h 40mAvianca
Deal found 25/8£729
Thu 18/922:05LHR - EZE
1 stop30h 05mAvianca
Wed 22/1006:50EZE - LHR
1 stop28h 45mAvianca
Deal found 25/8£731
Tue 2/906:30LHR - EZE
1 stop26h 45mKLM
Mon 29/914:40EZE - LHR
1 stop19h 10mKLM
Deal found 24/8£732
Fri 5/906:15LHR - EZE
1 stop19h 30mAir France
Thu 25/923:55EZE - LHR
1 stop17h 30mAir France
Deal found 25/8£732
Sun 9/1121:40LHR - EZE
1 stop21h 10mAvianca
Sat 6/1216:55EZE - LHR
1 stop18h 40mAvianca
Deal found 25/8£733
Mon 15/922:05LHR - EZE
1 stop35h 40mAvianca
Tue 21/1001:40EZE - LHR
1 stop33h 55mAvianca
Deal found 25/8£734

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 26 August 2025.
Use the filters below to find and compare flights from the United Kingdom to Buenos Aires that are best for you.

Fly from

United Kingdom

Fly to

Buenos Aires

Route

Depart

Return

Price

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 18/2

21:40-15:50

1 stop21h 10m

Buenos Aires Ministro Pistarini

Wed 18/3

07:35-14:35

1 stop28h 00m

£726

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 6/9

22:05-05:45

1 stop35h 40m

Buenos Aires Ministro Pistarini

Sun 21/9

01:40-15:35

1 stop33h 55m

£753

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 11/11

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Tue 25/11

07:00-14:35

1 stop28h 35m

£769

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Thu 18/9

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Wed 22/10

07:00-15:35

1 stop28h 35m

£769

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 5/9

13:30-06:25

1 stop20h 55m

Buenos Aires Ministro Pistarini

Mon 29/9

16:40-22:10

1 stop25h 30m

£786

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 8/9

13:40-08:00

1 stop22h 20m

Buenos Aires Ministro Pistarini

Mon 29/9

21:00-07:40

1 stop30h 40m

£786

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 7/9

16:40-08:00

2 stops43h 20m

Buenos Aires Ministro Pistarini

Tue 23/9

21:00-06:55

2 stops29h 55m

£786

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 27/10

10:00-06:20

1 stop23h 20m

Buenos Aires Ministro Pistarini

Fri 14/11

23:55-10:15

1 stop31h 20m

£786

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 7/9

16:40-08:00

2 stops43h 20m

Buenos Aires Ministro Pistarini

Mon 29/9

21:00-05:55

2 stops28h 55m

£786

LondonBuenos Aires

STN - EZE

STNEZE

London Stansted

Fri 14/11

06:50-01:00

2 stops45h 10m

Buenos Aires Ministro Pistarini

Thu 20/11

19:45-16:40

1 stop17h 55m

£794

Flights are sorted by cheapest return flights first.

Deals found on 25/8

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

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

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

Currently, May is the cheapest month in which you can book a flight from United Kingdom to Buenos Aires (average of £1,012). Flying from United Kingdom 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 GB to BUE?

Find hourly flight availability from United Kingdom 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 26 August 2025.

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

Weekly flight availability from United Kingdom to Buenos Aires

Explore weekly flight availability from United Kingdom to Buenos Aires. 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 26 August 2025.

The most flights from GB0 to BUE are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

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 26 August 2025.
Check out reviews from past customers who have flown with LATAM Airlines, Air Europa, andIberia from the United Kingdom to Buenos Aires 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
1,843 reviews
Check prices

Overall

7.5

Comfort

7.4

Boarding

7.6

Entertainment

7.0

Crew

8.0

Food

6.7

Reviews

1 / 20
4.0
Okay

Duane,Jun 2025

GRU - MAD

The flight crew were accommodating and friendly. However, it was annoying that I did not receive the seat I had reserved when I originally booked my flight and was not able to get much help before takeoff.
LATAM Airlines
7.5
Good
1,843 reviews
LATAM Airlines
7.5
Good
1,843 reviews
Check prices

Overall

7.5

Comfort

7.4

Boarding

7.6

Entertainment

7.0

Crew

8.0

Food

6.7

Reviews

1 / 20
4.0
Okay

Duane,Jun 2025

GRU - MAD

The flight crew were accommodating and friendly. However, it was annoying that I did not receive the seat I had reserved when I originally booked my flight and was not able to get much help before takeoff.
Air Europa
7.0
Good
548 reviews
LATAM Airlines
7.5
Good
1,843 reviews
Check prices

Overall

7.5

Comfort

7.4

Boarding

7.6

Entertainment

7.0

Crew

8.0

Food

6.7

Reviews

1 / 20
4.0
Okay

Duane,Jun 2025

GRU - MAD

The flight crew were accommodating and friendly. However, it was annoying that I did not receive the seat I had reserved when I originally booked my flight and was not able to get much help before takeoff.
Iberia
7.0
Good
2,891 reviews
LATAM Airlines
7.5
Good
1,843 reviews
Check prices

Overall

7.5

Comfort

7.4

Boarding

7.6

Entertainment

7.0

Crew

8.0

Food

6.7

Reviews

1 / 20
4.0
Okay

Duane,Jun 2025

GRU - MAD

The flight crew were accommodating and friendly. However, it was annoying that I did not receive the seat I had reserved when I originally booked my flight and was not able to get much help before takeoff.
Lufthansa
6.8
Okay
7,359 reviews
LATAM Airlines
7.5
Good
1,843 reviews
Check prices

Overall

7.5

Comfort

7.4

Boarding

7.6

Entertainment

7.0

Crew

8.0

Food

6.7

Reviews

1 / 20
4.0
Okay

Duane,Jun 2025

GRU - MAD

The flight crew were accommodating and friendly. However, it was annoying that I did not receive the seat I had reserved when I originally booked my flight and was not able to get much help before takeoff.
British Airways
6.7
Okay
7,309 reviews
LATAM Airlines
7.5
Good
1,843 reviews
Check prices

Overall

7.5

Comfort

7.4

Boarding

7.6

Entertainment

7.0

Crew

8.0

Food

6.7

Reviews

1 / 20
4.0
Okay

Duane,Jun 2025

GRU - MAD

The flight crew were accommodating and friendly. However, it was annoying that I did not receive the seat I had reserved when I originally booked my flight and was not able to get much help before takeoff.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Buenos Aires. 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 United Kingdom to Buenos Aires?

    Airlines like Avianca, Lufthansa, and United Airlines fly from United Kingdom to Buenos Aires in about 20h 55m. The time it takes to get you to your destination can typically vary by up to 1h 25m. United Kingdom and Buenos Aires are separated by a distance of 6915 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    The most popular route from United Kingdom to Buenos Aires is London Heathrow - Buenos Aires Ministro Pistarini. You may also consider London Heathrow - Buenos Aires Jorge Newbery or London Gatwick - Buenos Aires Ministro Pistarini.

  • What are the cheapest flights from United Kingdom to Buenos Aires?

    Looking at all options, your cheapest flight can be booked for £974. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £746 on average our data indicates £1,927 when flying from United Kingdom to Buenos Aires.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Buenos Aires?

    Currently, May is the cheapest month in which you can book a flight from United Kingdom to Buenos Aires (average of £1,012). Flying from United Kingdom 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

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

Alternative routes for United Kingdom to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Ministro Pistarini flights
Heathrow to Jorge Newbery flights
Gatwick to Ministro Pistarini flights
London City to Ministro Pistarini flights
Luton to Ministro Pistarini flights
London City to Jorge Newbery flights
Manchester to Ministro Pistarini flights
Manchester to Jorge Newbery flights
Birmingham to Ministro Pistarini flights
Madrid to Ministro Pistarini flights
Barcelona-El Prat to Ministro Pistarini flights
Leeds to Ministro Pistarini flights
Heathrow to Mendoza flights
Gatwick to Cordoba flights
Charles de Gaulle to Ministro Pistarini flights
Glasgow Intl to Ministro Pistarini flights
Edinburgh to Ministro Pistarini flights
London City to Mendoza flights
Heathrow to Cordoba flights
London City to Cordoba flights
Heathrow to Ushuaia flights
Bristol to Ministro Pistarini flights
Gatwick to Ushuaia flights
Newcastle upon Tyne to Ministro Pistarini flights
Berlin to Ministro Pistarini flights
Dublin to Ministro Pistarini flights
Heathrow to Salta flights
Inverness to Ministro Pistarini flights

Top 10 airlines flying from United Kingdom to Buenos Aires

Discover the top 10 airlines that operate flights from United Kingdom 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 26 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£444Average£1,120FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air EuropaCheapest£580Average£932FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
Air CanadaCheapest£641Average£682FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Turkish AirlinesCheapest£644Average£691FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
IberiaCheapest£698Average£958FlexibilityNo cancel feeOn-time77%
Search Iberia flights
FinnairCheapest£734Average£940FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£755Average£954FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£759Average£1,139FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£845Average£1,320FlexibilityNo cancel feeOn-time75%
Search KLM flights
LATAM AirlinesCheapest£867Average£1,089FlexibilityNo 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 United Kingdom to Buenos Aires?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Buenos Aires from United Kingdom today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from United Kingdom to Buenos Aires 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 United Kingdom to Buenos Aires with no change fees?

Need flexible booking options for your flight to Buenos Aires from United Kingdom? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for United Kingdom to Buenos Aires flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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