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Cheap flights from London to Buenos Aires from £449

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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BUE
22 ene. — 29 ene.1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London to Buenos Aires are usually found in September or January, booked 56 days in advance, depart on a Monday or Thursday and return on a Monday

Cheap 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 diciembre 2025.

vie. 26/1212:30LHR - EZE
1 stop21h 50mDelta
dom. 25/122:25EZE - LHR
2 stops31h 20mDelta
Deal found 22/12£916
dom. 28/1211:05LHR - EZE
2 stops24h 55mDelta
vie. 6/222:25EZE - LHR
1 stop29h 30mDelta
Deal found 22/12£928
dom. 28/1211:15LHR - EZE
1 stop23h 50mAmerican Airlines
vie. 6/220:45EZE - LHR
1 stop30h 35mAmerican Airlines
Deal found 22/12£970
mié. 31/1217:05LHR - EZE
1 stop17h 10mMultiple Airlines
jue. 16/400:30EZE - LHR
1 stop16h 55mMultiple Airlines
Deal found 22/12£997
mié. 31/1216:10LHR - EZE
1 stop21h 05mDelta
vie. 17/420:10EZE - LHR
2 stops32h 45mDelta
Deal found 22/12£1,016
vie. 26/1220:15LHR - EZE
1 stop26h 40mMultiple Airlines
dom. 25/121:30EZE - LHR
1 stop37h 35mMultiple Airlines
Deal found 21/12£1,051
sáb. 27/1208:40LCY - EZE
2 stops25h 40mDelta
dom. 11/123:55EZE - LCY
2 stops28h 20mDelta
Deal found 22/12£1,077
dom. 28/1220:15LHR - AEP
1 stop18h 30mLATAM Airlines
vie. 6/222:55AEP - LHR
1 stop36h 10mLATAM Airlines
Deal found 22/12£1,085
dom. 28/1220:15LHR - AEP
1 stop23h 45mMultiple Airlines
vie. 6/222:55AEP - LHR
2 stops30h 30mMultiple Airlines
Deal found 22/12£1,105
mié. 31/1220:15LHR - AEP
1 stop20h 45mLATAM Airlines
vie. 17/414:55AEP - LHR
2 stops21h 25mLATAM Airlines
Deal found 23/12£1,120
dom. 28/1219:15LCY - EZE
1 stop16h 25mIberia
vie. 6/214:20EZE - LCY
1 stop15h 30mIberia
Deal found 22/12£1,143
vie. 26/1220:15LHR - AEP
1 stop20h 45mMultiple Airlines
dom. 25/114:55AEP - LHR
2 stops23h 50mMultiple Airlines
Deal found 21/12£1,150

Find 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 diciembre 2025.

Round-trip from

£824

One-way from

£449

Popular in

December

Cheapest in

September

Average price

£1,269

Good round-trip deal

£967 or less
Iberia
  • Iberia
  • 7/2-21/2
  • 2 total stops
  • 33h 30m total
  • London to Buenos Aires
Search Deals
8/1
  • 8/1
  • 3 total stops
  • 39h 25m total
  • London to Buenos Aires
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£36 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from London (LON) to Buenos Aires (BUE).
Search Deals

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 diciembre 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

lun. 19/1

22:35-22:25

2 stops26h 50m

Buenos Aires Ministro Pistarini

jue. 12/3

23:55-14:10

2 stops35h 15m

£839

LondonBuenos Aires

LGW - AEP

LGWAEP

London Gatwick

mié. 4/2

17:25-20:45

2 stops30h 20m

Buenos Aires Jorge Newbery

mié. 11/2

05:35-16:25

2 stops31h 50m

£845

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

sáb. 24/1

19:40-17:55

1 stop25h 15m

Buenos Aires Ministro Pistarini

mar. 10/2

22:45-19:00

1 stop17h 15m

£851

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

vie. 23/1

19:40-17:55

1 stop25h 15m

Buenos Aires Ministro Pistarini

dom. 8/2

22:45-14:55

1 stop37h 10m

£860

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

vie. 16/1

19:40-17:55

1 stop25h 15m

Buenos Aires Ministro Pistarini

dom. 8/2

22:45-08:25

1 stop30h 40m

£860

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

dom. 18/1

22:35-22:25

2 stops26h 50m

Buenos Aires Ministro Pistarini

mar. 17/2

23:55-14:55

2 stops36h 00m

£864

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

lun. 19/1

15:05-22:25

2 stops34h 20m

Buenos Aires Ministro Pistarini

sáb. 21/2

23:55-09:55

2 stops55h 00m

£868

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

mié. 21/1

06:35-22:25

2 stops42h 50m

Buenos Aires Ministro Pistarini

sáb. 21/2

23:55-09:55

2 stops55h 00m

£868

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

jue. 9/4

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

jue. 16/4

07:00-15:35

1 stop28h 35m

£870

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

vie. 10/4

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

mar. 14/4

07:00-15:35

1 stop28h 35m

£870

Flights are sorted by cheapest return flights first.

Deals found on 22/12

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 19 December 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 56 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, December is the cheapest month in which you can book a flight from London to Buenos Aires (average of £522). Flying from London to Buenos Aires in July is currently the most expensive (average of £889). 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 diciembre 2025.

It’s optimal to fly from London to Buenos Aires in the morning. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight in the evening.

Weekly flight availability from London to Buenos Aires

Explore weekly flight availability from London 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 23 diciembre 2025.

The most flights from LON 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).

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 35% 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 £755.

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.

How often are flights from London to Buenos Aires delayed?

About 0% of weekly flights between London and Buenos Aires have experienced delays in the past year, with the average delay time being 0 minutes.

What is the most punctual flight time for London to Buenos Aires 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?

Thursday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

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 diciembre 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.
LATAM Airlines
7.5
Good
1,895 reviews
Check prices

Boarding

7.6

Food

6.7

Overall

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

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!
LATAM Airlines
7.5
Good
1,895 reviews
LATAM Airlines
7.5
Good
1,895 reviews
Check prices

Boarding

7.6

Food

6.7

Overall

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

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!
Air Europa
7.0
Good
576 reviews
LATAM Airlines
7.5
Good
1,895 reviews
Check prices

Boarding

7.6

Food

6.7

Overall

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

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!
Iberia
7.0
Good
3,057 reviews
LATAM Airlines
7.5
Good
1,895 reviews
Check prices

Boarding

7.6

Food

6.7

Overall

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

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!
Lufthansa
6.8
Okay
7,650 reviews
LATAM Airlines
7.5
Good
1,895 reviews
Check prices

Boarding

7.6

Food

6.7

Overall

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

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!
British Airways
6.7
Okay
7,609 reviews
LATAM Airlines
7.5
Good
1,895 reviews
Check prices

Boarding

7.6

Food

6.7

Overall

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

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 25h 15m. Turkish Airlines provides one of the quickest options available for as low as £851. London and Buenos Aires are separated by a distance of 6908 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 £446 on this airline. Additional options worth looking into are Avianca and Air Europa, starting at £700 and £710 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 cheapest airlines to fly from London to Buenos Aires one-way?

    One-way options have recently been found by users for as low as £374 on Avianca. Other airlines that offer cheap prices include Iberia from £543 and LATAM Airlines from £599 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 City - 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 £884. On average you can expect to pay £1,187. The most popular route, (London Heathrow - Buenos Aires Ministro Pistarini), can usually be booked for £651.

  • 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, December is the cheapest month in which you can book a flight from London to Buenos Aires (average of £522). Flying from London to Buenos Aires in July is currently the most expensive (average of £889). 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

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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 diciembre 2025.
British Airways flights from London to Buenos Aires
Air Europa 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 23 diciembre 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£446Average£1,107FlexibilityNo cancel feeOn-time77%
Search Air France flights
AviancaCheapest£700Average£797FlexibilityNo cancel feeOn-time71%
Search Avianca flights
Air EuropaCheapest£710Average£1,167FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
IberiaCheapest£718Average£1,056FlexibilityNo cancel feeOn-time77%
Search Iberia flights
FinnairCheapest£754Average£1,090FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£802Average£1,109FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£819Average£1,226FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
American AirlinesCheapest£867Average£971FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
LATAM AirlinesCheapest£904Average£1,046FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
KLMCheapest£1,023Average£1,365FlexibilityNo cancel feeOn-time75%
Search KLM 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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