Cheap flights from London to Buenos Aires from £463

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 30/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BUE
22 Nov — 29 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from London to Buenos Aires are usually found in September or March, booked 60 days in advance, depart on a Monday or Tuesday and return on a Monday

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 23 October 2025.

Round-trip from

£732

One-way from

£463

Popular in

December

Cheapest in

September

Average price

£954

Good round-trip deal

£1,455 or less
Avianca
  • Avianca
  • 22/3-30/3
  • 2 total stops
  • 55h 05m total
  • London to Buenos Aires
United Airlines
  • United Airlines
  • 30/10
  • 1 total stop
  • 23h 20m total
  • London to Buenos Aires
Highest demand for flights based on searches. 5% potential increase in price (£41 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 October 2025
Price to beat on a round-trip flight from London (LON) to Buenos Aires (BUE).

Find flight deals from London to Buenos Aires

Enter your travel dates to find the best prices.

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 23 October 2025.

Wed 3/1209:50LGW - EZE
2 stops25h 55mMultiple Airlines
Wed 10/1213:50EZE - LGW
2 stops28h 50mMultiple Airlines
Deal found 22/10£738
Tue 2/1213:45LHR - EZE
2 stops25h 05mMultiple Airlines
Tue 9/1217:45EZE - LHR
1 stop19h 05mMultiple Airlines
Deal found 21/10£750
Tue 2/1216:30LHR - EZE
1 stop18h 25mLufthansa
Tue 9/1217:45EZE - LHR
1 stop16h 05mLufthansa
Deal found 21/10£756
Mon 1/1206:25LGW - EZE
1 stop43h 00mTurkish Airlines
Wed 10/1223:55EZE - LGW
1 stop30h 25mTurkish Airlines
Deal found 22/10£768
Wed 3/1207:40STN - EZE
2 stops28h 05mMultiple Airlines
Wed 10/1213:50EZE - STN
2 stops23h 10mMultiple Airlines
Deal found 22/10£768
Wed 3/1209:55LHR - EZE
2 stops25h 50mMultiple Airlines
Wed 10/1213:50EZE - LHR
2 stops25h 10mMultiple Airlines
Deal found 22/10£768
Wed 3/1208:25LCY - EZE
1 stop27h 20mITA Airways
Wed 10/1213:50EZE - LCY
1 stop23h 20mITA Airways
Deal found 22/10£774
Tue 18/1121:40LHR - EZE
1 stop21h 10mAvianca
Mon 24/1101:40EZE - LHR
1 stop33h 55mAvianca
Deal found 21/10£775
Mon 3/1107:40LHR - EZE
2 stops28h 40mUnited Airlines
Thu 13/1122:05EZE - LHR
1 stop30h 25mUnited Airlines
Deal found 22/10£776
Mon 24/1118:15LCY - EZE
1 stop16h 40mLufthansa
Sun 7/1217:45EZE - LCY
1 stop19h 55mLufthansa
Deal found 22/10£777
Mon 17/1121:40LHR - EZE
1 stop35h 10mAvianca
Tue 2/1201:40EZE - LHR
1 stop33h 55mAvianca
Deal found 21/10£780
Mon 1/1213:15LCY - EZE
2 stops33h 35mITA Airways
Wed 10/1213:50EZE - LCY
1 stop18h 05mITA Airways
Deal found 22/10£782

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 23 October 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 - AEP

LHRAEP

London Heathrow

Sun 22/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Wed 1/4

07:00-15:35

1 stop28h 35m

£752

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Mon 23/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Wed 1/4

07:00-15:35

1 stop28h 35m

£752

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sun 12/4

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Wed 15/4

07:00-15:35

1 stop28h 35m

£763

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sun 12/4

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Thu 16/4

07:00-15:35

1 stop28h 35m

£763

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Wed 8/4

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Thu 16/4

07:00-15:35

1 stop28h 35m

£763

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 1/11

11:35-07:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

Sat 22/11

23:55-10:15

1 stop31h 20m

£789

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 11/11

12:05-07:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Tue 25/11

23:55-07:30

1 stop28h 35m

£789

LondonBuenos Aires

STN - EZE

STNEZE

London Stansted

Thu 20/11

07:40-00:20

3 stops43h 40m

Buenos Aires Ministro Pistarini

Fri 28/11

13:50-14:15

2 stops21h 25m

£817

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 6/11

12:05-09:20

1 stop24h 15m

Buenos Aires Ministro Pistarini

Tue 25/11

23:55-07:30

1 stop28h 35m

£840

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 22/1

12:05-09:20

1 stop24h 15m

Buenos Aires Ministro Pistarini

Wed 18/2

23:55-07:30

1 stop28h 35m

£840

Flights are sorted by cheapest return flights first.

Deals found on 21/10

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 17 October 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 60 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, March is the cheapest month in which you can book a flight from London to Buenos Aires (average of £576). Flying from London to Buenos Aires in July is currently the most expensive (average of £894). 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 23 October 2025.

It’s optimal to fly from London to Buenos Aires in the morning. By choosing this option you can save up to 13% 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 Friday afternoons when fares are most often at their lowest. Friday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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

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

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

Madrid (MAD) – chosen by Cheapflights users on 36% of one-stop itineraries from London to Buenos Aires on Cheapflights.

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

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

Toronto (YYZ) is the most affordable one-stop option, with an average return flight price of £744.

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

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

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 16h 14m.

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

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

Flights via Barcelona (BCN) offer the fastest connection on this route, with an average stopover time of 1h 23m.

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 23 October 2025.
Check out reviews from past customers who have flown with LATAM Airlines, Air Europa, andIberia from London 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.

Comfort

7.3

Crew

8.0

Boarding

7.6

Overall

7.5

Food

6.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!

Comfort

7.3

Crew

8.0

Boarding

7.6

Overall

7.5

Food

6.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!

Comfort

7.3

Crew

8.0

Boarding

7.6

Overall

7.5

Food

6.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!

Comfort

7.3

Crew

8.0

Boarding

7.6

Overall

7.5

Food

6.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!

Comfort

7.3

Crew

8.0

Boarding

7.6

Overall

7.5

Food

6.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!

Comfort

7.3

Crew

8.0

Boarding

7.6

Overall

7.5

Food

6.7

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!

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

    A quick flight from London to Buenos Aires can take about 29h 30m. Avianca provides one of the quickest options available for as low as £867. London and Buenos Aires are separated by a distance of 6932 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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 £449 on this airline. Additional options worth looking into are Air Europa and ITA Airways, starting at £586 and £622 round-trip. Air France is 53% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most popular routes 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 £937. On average you can expect to pay £1,988. The most popular route, (London Heathrow - Buenos Aires Ministro Pistarini), can usually be booked for £756.

  • 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, March is the cheapest month in which you can book a flight from London to Buenos Aires (average of £576). Flying from London to Buenos Aires in July is currently the most expensive (average of £894). 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 23 October 2025.

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 23 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£449Average£1,138FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air EuropaCheapest£586Average£1,012FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
ITA AirwaysCheapest£622Average£1,094FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
AviancaCheapest£720Average£802FlexibilityNo cancel feeOn-time71%
Search Avianca flights
IberiaCheapest£727Average£1,080FlexibilityNo cancel feeOn-time77%
Search Iberia flights
FinnairCheapest£740Average£1,085FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£803Average£1,082FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£826Average£1,217FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
LATAM AirlinesCheapest£876Average£1,033FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
American AirlinesCheapest£881Average£1,165FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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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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