Cheap flights from the United Kingdom to Buenos Aires from £442

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
16 Oct — 23 Oct1
1 adult
1 adult, Economy

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 16 September 2025.

Round-trip from

£702

One-way from

£442

Popular in

December

Cheapest in

March

Average price

£854

Good round-trip deal

£1,284 or less
Avianca
  • Avianca
  • 12/11-24/11
  • 2 total stops
  • 63h 10m total
  • United Kingdom to Buenos Aires
10/3
  • 10/3
  • 2 total stops
  • 33h 15m total
  • United Kingdom to Buenos Aires
Highest demand for flights based on searches. 5% potential increase in price (£40 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
Average for round-trip flights in September 2025
Price to beat on a round-trip flight from United Kingdom to Buenos Aires (BUE).

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 16 September 2025.

Wed 24/922:05LHR - EZE
1 stop30h 05mAvianca
Thu 9/1001:40EZE - LHR
1 stop33h 55mAvianca
Deal found 14/9£702
Mon 22/922:05LHR - EZE
1 stop21h 15mAvianca
Sun 5/1006:50EZE - LHR
1 stop28h 45mAvianca
Deal found 14/9£712
Thu 6/1121:40LHR - EZE
1 stop35h 10mAvianca
Sun 16/1101:40EZE - LHR
1 stop33h 55mAvianca
Deal found 15/9£712
Wed 19/1121:40LHR - EZE
1 stop21h 10mAvianca
Mon 9/316:55EZE - LHR
1 stop18h 40mAvianca
Deal found 15/9£714
Tue 11/1121:40LHR - EZE
1 stop21h 10mAvianca
Mon 17/1116:55EZE - LHR
1 stop18h 40mAvianca
Deal found 16/9£717
Mon 10/1121:40LHR - EZE
1 stop21h 10mAvianca
Thu 11/1207:35EZE - LHR
1 stop28h 00mAvianca
Deal found 15/9£718
Thu 13/1121:40LHR - EZE
1 stop35h 10mAvianca
Fri 28/1107:35EZE - LHR
1 stop28h 00mAvianca
Deal found 15/9£720
Mon 10/1121:40LHR - EZE
1 stop21h 10mAvianca
Fri 28/1116:55EZE - LHR
1 stop18h 40mAvianca
Deal found 14/9£720
Wed 24/922:05LHR - EZE
1 stop30h 05mAvianca
Thu 23/1016:45EZE - LHR
1 stop18h 50mAvianca
Deal found 14/9£721
Sat 15/1121:40LHR - EZE
1 stop35h 10mAvianca
Mon 24/1116:55EZE - LHR
1 stop18h 40mAvianca
Deal found 14/9£726
Fri 21/1116:45LCY - AEP
2 stops36h 35mMultiple Airlines
Wed 3/1209:00AEP - LCY
2 stops22h 55mMultiple Airlines
Deal found 15/9£746
Mon 22/922:05LHR - AEP
1 stop35h 35mAvianca
Mon 29/907:00AEP - LHR
1 stop28h 35mAvianca
Deal found 15/9£765

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 16 September 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 - AEP

LHRAEP

London Heathrow

Mon 17/11

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Sun 7/12

07:00-14:35

1 stop28h 35m

£766

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 26/9

22:05-00:10

1 stop30h 05m

Buenos Aires Ministro Pistarini

Fri 3/10

01:40-15:35

1 stop33h 55m

£796

ManchesterBuenos Aires

MAN - EZE

MANEZE

Manchester

Sat 10/1

06:45-07:55

2 stops28h 10m

Buenos Aires Ministro Pistarini

Wed 28/1

14:40-17:55

2 stops24h 15m

£846

ManchesterBuenos Aires

MAN - EZE

MANEZE

Manchester

Tue 21/10

19:15-16:20

1 stop25h 05m

Buenos Aires Ministro Pistarini

Tue 4/11

13:35-11:00

2 stops18h 25m

£848

ManchesterBuenos Aires

MAN - EZE

MANEZE

Manchester

Fri 9/1

06:00-07:55

1 stop28h 55m

Buenos Aires Ministro Pistarini

Wed 28/1

14:40-17:55

2 stops24h 15m

£854

ManchesterBuenos Aires

MAN - EZE

MANEZE

Manchester

Wed 29/10

18:20-21:00

1 stop29h 40m

Buenos Aires Ministro Pistarini

Wed 5/11

14:20-17:40

1 stop24h 20m

£859

ManchesterBuenos Aires

MAN - EZE

MANEZE

Manchester

Mon 10/11

09:00-15:50

2 stops33h 50m

Buenos Aires Ministro Pistarini

Mon 17/11

13:00-12:05

1 stop20h 05m

£860

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 13/11

11:35-07:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

Mon 17/11

23:55-07:30

1 stop28h 35m

£884

EdinburghBuenos Aires

EDI - AEP

EDIAEP

Edinburgh Turnhouse

Wed 22/10

12:30-17:30

2 stops33h 00m

Buenos Aires Jorge Newbery

Wed 29/10

10:55-09:30

2 stops43h 35m

£884

LondonBuenos Aires

LGW - AEP

LGWAEP

London Gatwick

Sat 24/1

19:40-18:40

2 stops26h 00m

Buenos Aires Jorge Newbery

Tue 17/2

17:15-19:00

2 stops22h 45m

£885

Flights are sorted by cheapest return flights first.

Deals found on 14/9

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 16 September 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.

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 16 September 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.

Crew

8.0

Boarding

7.6

Food

6.7

Comfort

7.4

Overall

7.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Darrel,Sept 2025

LIM - GRU

The Wi-Fi was not working, so there was no in-flight entertainment. The biggest disappointment was that my Delta diamond status did not transfer any status to my LATAM flight. I WOULD’VE THOUGHT THAT THERE WOULD BE A BETTER WORKING AGREEMENT BETWEEN THE AIRLINES.

Crew

8.0

Boarding

7.6

Food

6.7

Comfort

7.4

Overall

7.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Darrel,Sept 2025

LIM - GRU

The Wi-Fi was not working, so there was no in-flight entertainment. The biggest disappointment was that my Delta diamond status did not transfer any status to my LATAM flight. I WOULD’VE THOUGHT THAT THERE WOULD BE A BETTER WORKING AGREEMENT BETWEEN THE AIRLINES.

Crew

8.0

Boarding

7.6

Food

6.7

Comfort

7.4

Overall

7.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Darrel,Sept 2025

LIM - GRU

The Wi-Fi was not working, so there was no in-flight entertainment. The biggest disappointment was that my Delta diamond status did not transfer any status to my LATAM flight. I WOULD’VE THOUGHT THAT THERE WOULD BE A BETTER WORKING AGREEMENT BETWEEN THE AIRLINES.

Crew

8.0

Boarding

7.6

Food

6.7

Comfort

7.4

Overall

7.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Darrel,Sept 2025

LIM - GRU

The Wi-Fi was not working, so there was no in-flight entertainment. The biggest disappointment was that my Delta diamond status did not transfer any status to my LATAM flight. I WOULD’VE THOUGHT THAT THERE WOULD BE A BETTER WORKING AGREEMENT BETWEEN THE AIRLINES.

Crew

8.0

Boarding

7.6

Food

6.7

Comfort

7.4

Overall

7.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Darrel,Sept 2025

LIM - GRU

The Wi-Fi was not working, so there was no in-flight entertainment. The biggest disappointment was that my Delta diamond status did not transfer any status to my LATAM flight. I WOULD’VE THOUGHT THAT THERE WOULD BE A BETTER WORKING AGREEMENT BETWEEN THE AIRLINES.

Crew

8.0

Boarding

7.6

Food

6.7

Comfort

7.4

Overall

7.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Darrel,Sept 2025

LIM - GRU

The Wi-Fi was not working, so there was no in-flight entertainment. The biggest disappointment was that my Delta diamond status did not transfer any status to my LATAM flight. I WOULD’VE THOUGHT THAT THERE WOULD BE A BETTER WORKING AGREEMENT BETWEEN THE AIRLINES.

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, British Airways, and United Airlines fly from United Kingdom to Buenos Aires in about 29h 05m. The time it takes to get you to your destination can typically vary by up to 17h 40m. United Kingdom and Buenos Aires are separated by a distance of 6954 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?

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

    Looking at all options, your cheapest flight can be booked for £1,064. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £721 on average, our data indicates £1,881 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.

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 16 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£441Average£1,132FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air EuropaCheapest£576Average£1,115FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
Air CanadaCheapest£636Average£667FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
IberiaCheapest£684Average£952FlexibilityNo cancel feeOn-time77%
Search Iberia flights
AviancaCheapest£698Average£785FlexibilityNo cancel feeOn-time71%
Search Avianca flights
FinnairCheapest£728Average£933FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£728Average£955FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£754Average£1,129FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£839Average£1,310FlexibilityNo cancel feeOn-time75%
Search KLM flights
LATAM AirlinesCheapest£861Average£1,129FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

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

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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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