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Cheap flights from London to Buenos Aires from £455

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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BUE
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London to Buenos Aires are usually found in September or March, booked 10 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 27 November 2025.

Round-trip from

£801

One-way from

£455

Popular in

December

Cheapest in

September

Average price

£911

Good round-trip deal

£1,143 or less

Good one-way deal

£794 or less
3/3-16/3
  • 3/3-16/3
  • 3 total stops
  • 52h 45m total
  • London to Buenos Aires
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4/3
  • 4/3
  • 2 total stops
  • 33h 55m total
  • London to Buenos Aires
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Highest demand for flights based on searches. 5% potential increase in price (£44 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£23 potential savings vs. average return price).
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Average for round-trip flights in November 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

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 27 November 2025.

Wed 3/1212:05LHR - EZE
1 stop22h 15mLufthansa
Tue 20/123:55EZE - LHR
1 stop28h 35mLufthansa
Deal found 25/11£829
Wed 3/1207:40LHR - EZE
2 stops26h 40mUnited Airlines
Tue 20/123:55EZE - LHR
2 stops27h 00mUnited Airlines
Deal found 25/11£833
Thu 27/1106:20LHR - EZE
1 stop17h 00mAir France
Sun 7/1222:40EZE - LHR
1 stop16h 40mAir France
Deal found 26/11£847
Mon 15/1211:25LHR - EZE
2 stops25h 50mAmerican Airlines
Mon 2/210:10EZE - LHR
1 stop19h 25mAmerican Airlines
Deal found 24/11£848
Wed 26/1111:55LHR - EZE
1 stop23h 25mAmerican Airlines
Thu 4/1223:59EZE - LHR
1 stop29h 16mAmerican Airlines
Deal found 24/11£855
Wed 10/1217:00LHR - EZE
1 stop20h 40mAmerican Airlines
Thu 29/122:25EZE - LHR
1 stop29h 25mAmerican Airlines
Deal found 24/11£864
Sat 6/1206:35LHR - EZE
2 stops42h 50mTurkish Airlines
Tue 31/323:55EZE - LHR
2 stops42h 30mTurkish Airlines
Deal found 26/11£864
Wed 10/1216:25LHR - EZE
1 stop21h 15mAmerican Airlines
Sun 1/220:45EZE - LHR
1 stop30h 35mAmerican Airlines
Deal found 25/11£867
Wed 26/1115:35LHR - EZE
1 stop22h 05mAmerican Airlines
Wed 3/1220:30EZE - LHR
1 stop30h 50mAmerican Airlines
Deal found 25/11£869
Wed 31/1219:40LHR - AEP
2 stops23h 20mLATAM Airlines
Wed 4/218:20AEP - LHR
1 stop16h 45mLATAM Airlines
Deal found 24/11£874
Wed 31/1220:15LHR - AEP
1 stop20h 45mLATAM Airlines
Thu 5/210:35AEP - LHR
1 stop24h 30mLATAM Airlines
Deal found 24/11£889
Thu 27/1106:30LHR - AEP
2 stops30h 25mMultiple Airlines
Thu 4/1213:00AEP - LHR
2 stops26h 20mMultiple Airlines
Deal found 25/11£892

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 27 November 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

LGW - AEP

LGWAEP

London Gatwick

Mon 4/5

06:50-05:40

2 stops26h 50m

Buenos Aires Jorge Newbery

Tue 12/5

07:00-12:40

2 stops25h 40m

£825

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 26/1

09:10-09:20

2 stops27h 10m

Buenos Aires Ministro Pistarini

Mon 9/3

22:55-07:30

1 stop29h 35m

£833

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Wed 4/3

10:00-08:50

1 stop25h 50m

Buenos Aires Ministro Pistarini

Wed 18/3

13:15-16:25

1 stop24h 10m

£834

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Mon 2/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Wed 25/3

07:00-14:35

1 stop28h 35m

£854

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Mon 2/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Mon 23/3

07:00-14:35

1 stop28h 35m

£854

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Mon 2/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Thu 26/3

07:00-14:35

1 stop28h 35m

£854

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Mon 2/3

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Fri 20/3

07:00-14:35

1 stop28h 35m

£854

LondonBuenos Aires

LGW - AEP

LGWAEP

London Gatwick

Thu 7/5

08:00-05:40

2 stops25h 40m

Buenos Aires Jorge Newbery

Thu 21/5

07:00-14:45

2 stops27h 45m

£861

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Thu 12/3

17:05-22:25

2 stops56h 20m

Buenos Aires Ministro Pistarini

Mon 16/3

23:55-09:25

2 stops54h 30m

£863

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Tue 3/3

17:25-08:50

1 stop18h 25m

Buenos Aires Ministro Pistarini

Mon 9/3

13:15-16:25

1 stop24h 10m

£869

Flights are sorted by cheapest return flights first.

Deals found on 25/11

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 21 November 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 10 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 £570). Flying from London to Buenos Aires in July is currently the most expensive (average of £904). 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 27 November 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 27 November 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 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 £769.

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 15m.

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 27 November 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
1,886 reviews
Check prices

Overall

7.5

Entertainment

7.0

Boarding

7.6

Crew

8.0

Comfort

7.3

Food

6.7

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
1,886 reviews
LATAM Airlines
7.5
Good
1,886 reviews
Check prices

Overall

7.5

Entertainment

7.0

Boarding

7.6

Crew

8.0

Comfort

7.3

Food

6.7

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
569 reviews
LATAM Airlines
7.5
Good
1,886 reviews
Check prices

Overall

7.5

Entertainment

7.0

Boarding

7.6

Crew

8.0

Comfort

7.3

Food

6.7

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
3,036 reviews
LATAM Airlines
7.5
Good
1,886 reviews
Check prices

Overall

7.5

Entertainment

7.0

Boarding

7.6

Crew

8.0

Comfort

7.3

Food

6.7

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
7,594 reviews
LATAM Airlines
7.5
Good
1,886 reviews
Check prices

Overall

7.5

Entertainment

7.0

Boarding

7.6

Crew

8.0

Comfort

7.3

Food

6.7

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
7,539 reviews
LATAM Airlines
7.5
Good
1,886 reviews
Check prices

Overall

7.5

Entertainment

7.0

Boarding

7.6

Crew

8.0

Comfort

7.3

Food

6.7

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 50m. United Airlines provides one of the quickest options available for as low as £834. 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 £454 on this airline. Additional options worth looking into are Avianca and Air Europa, starting at £712 and £723 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 £456 on United Airlines. Other airlines that offer cheap prices include LEVEL from £479 and SWISS from £608 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 £745. On average you can expect to pay £1,369. The most popular route, (London Heathrow - Buenos Aires Ministro Pistarini), can usually be booked for £723.

  • 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 £570). Flying from London to Buenos Aires in July is currently the most expensive (average of £904). 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 27 November 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 27 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£454Average£1,229FlexibilityNo cancel feeOn-time77%
Search Air France flights
AviancaCheapest£712Average£811FlexibilityNo cancel feeOn-time71%
Search Avianca flights
Air EuropaCheapest£723Average£1,184FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
IberiaCheapest£736Average£1,141FlexibilityNo cancel feeOn-time77%
Search Iberia flights
ITA AirwaysCheapest£742Average£1,162FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
FinnairCheapest£749Average£1,099FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£813Average£1,099FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£835Average£1,246FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
LATAM AirlinesCheapest£886Average£1,047FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
American AirlinesCheapest£891Average£998FlexibilityNo cancel feeOn-time71%
Search American 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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