How long is the flight from London to Buenos Aires?

A quick flight from London to Buenos Aires can take about 31h 40m. Avianca provides one of the quickest options available for as low as £818. London and Buenos Aires are separated by a distance of 6915 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 £442 on this airline. Additional options worth looking into are Air Europa and ITA Airways, starting at £577 and £612 round-trip. Air France is 52% cheaper than the average price of flights available within the next 90 days to this destination.

In terms of precipitation, rainfall in Buenos Aires ranges from 50.0 - 100.0 inches per month. January is typically the wettest month, when rainfall can reach 100.0 mm. June is typically the driest time to visit Buenos Aires when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 11.0 C).

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 £1,067. On average you can expect to pay £1,885. The most popular route, (London Heathrow - Buenos Aires Ministro Pistarini), can usually be booked for £752.

What are the most popular airlines that fly from London to Buenos Aires?

Consider American Airlines, Air Canada or Air France when booking your flight. These represent the most popular airlines when flying from London to Buenos Aires.

What is the cheapest day to fly round-trip from London to Buenos Aires?

Thursday flights are found to be more expensive to fly from London to Buenos Aires. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Buenos Aires.

How far in advance should I book a flight from London to Buenos Aires?

To save on the cost of your flight from London to Buenos Aires, book at least 61 days before your planned departure. Booking around this time can save you about 18% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £948 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £1,022.

What is the cheapest month to fly from London to Buenos Aires?

March is one of the best times of the year to fly to Buenos Aires from London. Prices for March average £926 per person but you can even find prices for as low as £621. The most expensive prices can be found in the month of December. Opting for a March flight can save you 33% on your journey compared to booking in December

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.

£531+ Flights from London to Buenos Aires

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

Airfare is below average for this route at the moment. London to Buenos Aires flights typically cost between £744 and £999 in October. The cheapest return flight price found within the last 3 days was £703 on Avianca (27 Oct-3 Nov).

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

Cheap flight deals from London to Buenos Aires

Round-trip from	£703
One-way from	£531
Popular in	December
Cheapest in	March
Average price	£853
Good round-trip deal	£1,188 or less

Avianca
27/10-3/11
2 total stops
53h 50m total
London to Buenos Aires

Search Deals

1/1
1 total stop
23h 20m total
London to Buenos Aires

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (£36 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 September 2025

Search Deals

Price to beat on a round-trip flight from London (LON) to Buenos Aires (BUE).

Search Deals

Find flight deals from London to Buenos Aires

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 13 September 2025.

Mon 27/1021:40LHR - EZE

1 stop35h 10mAvianca

Mon 3/1116:55EZE - LHR

1 stop18h 40mAvianca

Deal found 12/9£703

Mon 17/1121:40LHR - EZE

1 stop21h 10mAvianca

Mon 8/1216:55EZE - LHR

1 stop18h 40mAvianca

Deal found 12/9£704

Wed 24/922:05LHR - EZE

1 stop30h 05mAvianca

Thu 23/1016:45EZE - LHR

1 stop18h 50mAvianca

Deal found 11/9£721

Wed 24/922:05LHR - EZE

1 stop21h 15mAvianca

Wed 1/1006:50EZE - LHR

1 stop28h 45mAvianca

Deal found 13/9£722

Thu 13/1121:40LHR - EZE

1 stop35h 10mAvianca

Fri 28/1107:35EZE - LHR

1 stop28h 00mAvianca

Deal found 12/9£724

Wed 5/1121:40LHR - EZE

1 stop35h 10mAvianca

Mon 9/301:40EZE - LHR

1 stop33h 55mAvianca

Deal found 11/9£725

Thu 13/1121:40LHR - EZE

1 stop35h 10mAvianca

Tue 9/1201:40EZE - LHR

1 stop33h 55mAvianca

Deal found 12/9£726

Wed 12/1121:40LHR - EZE

1 stop35h 10mAvianca

Tue 18/1101:40EZE - LHR

1 stop33h 55mAvianca

Deal found 13/9£727

Tue 4/1121:40LHR - EZE

1 stop35h 10mAvianca

Mon 23/201:40EZE - LHR

1 stop33h 55mAvianca

Deal found 12/9£732

Mon 3/1121:40LHR - EZE

1 stop35h 10mAvianca

Tue 18/1101:40EZE - LHR

1 stop33h 55mAvianca

Deal found 12/9£733

Thu 6/1110:05LGW - EZE

2 stops39h 20mTurkish Airlines

Tue 25/1123:55EZE - LGW

1 stop43h 40mTurkish Airlines

Deal found 13/9£737

Mon 17/1121:40LHR - AEP

1 stop35h 00mAvianca

Mon 8/1207:00AEP - LHR

1 stop28h 35mAvianca

Deal found 12/9£741

Best flights from London to Buenos Aires
Discover carefully curated flight deals from London to Buenos Aires that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2025.

Mon 17/1121:40LHR - AEP

1 stop35h 00mAvianca

Mon 8/1207:00AEP - LHR

1 stop28h 35mAvianca

Deal found 12/9£741

Thu 20/1108:25LCY - AEP

2 stops32h 15mMultiple Airlines

Fri 28/1108:55AEP - LCY

2 stops23h 00mMultiple Airlines

Deal found 11/9£780

Sat 1/1108:00LHR - EZE

2 stops50h 20mUnited Airlines

Sat 22/1123:55EZE - LHR

1 stop31h 20mUnited Airlines

Deal found 11/9£782

Sat 29/1117:45LHR - EZE

2 stops31h 40mTurkish Airlines

Mon 12/123:55EZE - LHR

2 stops36h 00mTurkish Airlines

Deal found 12/9£818

Sat 11/1020:00LHR - EZE

1 stop24h 20mBritish Airways

Fri 7/1113:35EZE - LHR

1 stop16h 00mBritish Airways

Deal found 13/9£825

Mon 17/1119:40LGW - AEP

2 stops23h 20mLATAM Airlines

Mon 8/1217:15AEP - LGW

2 stops22h 45mLATAM Airlines

Deal found 12/9£891

Sat 22/1120:05LHR - AEP

2 stops42h 35mSWISS

Sun 7/1214:55AEP - LHR

2 stops19h 05mSWISS

Deal found 12/9£893

Fri 6/317:25LGW - EZE

1 stop18h 25mAir Europa

Mon 30/312:15EZE - LGW

1 stop16h 45mAir Europa

Deal found 12/9£897

Thu 30/1009:40LHR - EZE

2 stops27h 35mDelta

Tue 10/322:25EZE - LHR

2 stops29h 25mDelta

Deal found 11/9£917

Thu 13/1107:00LGW - EZE

1 stop37h 55mLEVEL

Thu 27/1119:45EZE - LGW

1 stop23h 15mLEVEL

Deal found 12/9£1,017

Thu 13/1118:15LCY - EZE

1 stop16h 40mLufthansa

Mon 17/1117:45EZE - LCY

1 stop19h 55mLufthansa

Deal found 12/9£1,035

Tue 2/1217:50LCY - EZE

1 stop16h 25mKLM

Tue 16/1216:25EZE - LCY

1 stop21h 10mKLM

Deal found 11/9£1,047

Direct flights from London to Buenos Aires
Explore direct flight options from London to Buenos Aires based on user searches, and compare prices and availability for your desired travel dates. Data last updated 13 September 2025.

Tue 18/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Tue 2/1213:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 11/9£1,235

Sun 8/322:00LHR - EZE

Nonstop16h 45mBritish Airways

Sun 22/313:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 11/9£1,280

Thu 8/122:00LHR - EZE

Nonstop16h 45mBritish Airways

Wed 21/113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 11/9£1,334

Tue 4/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Tue 11/1113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 11/9£1,354

Wed 12/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Wed 19/1113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 13/9£1,362

Wed 4/322:00LHR - EZE

Nonstop16h 45mBritish Airways

Tue 31/312:15EZE - LHR

Nonstop15h 55mBritish Airways

Deal found 12/9£1,370

Wed 19/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Mon 1/1213:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 13/9£1,466

Tue 2/1222:00LHR - EZE

Nonstop16h 45mBritish Airways

Tue 16/1213:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 12/9£1,497

Tue 4/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Fri 21/1113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 13/9£1,500

Thu 25/921:55LHR - EZE

Nonstop16h 40mBritish Airways

Fri 17/1012:15EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 11/9£1,566

Fri 3/1022:10LHR - EZE

Nonstop16h 25mBritish Airways

Tue 7/1012:15EZE - LHR

Nonstop15h 55mBritish Airways

Deal found 11/9£1,591

Sun 25/122:00LHR - EZE

Nonstop16h 45mBritish Airways

Wed 11/213:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 11/9£1,604

Last-minute flights from London to Buenos Aires
Discover last-minute flight deals from London to Buenos Aires. Data last updated 13 September 2025 and is based on user searches.

Mon 22/922:05LHR - EZE

1 stop21h 15mAvianca

Fri 26/906:50EZE - LHR

1 stop28h 45mAvianca

Deal found 12/9£733

Mon 22/922:05LHR - AEP

1 stop35h 35mAvianca

Sat 27/907:00AEP - LHR

1 stop28h 35mAvianca

Deal found 12/9£773

Mon 22/922:05LHR - AEP

1 stop35h 35mAvianca

Fri 26/907:00AEP - LHR

1 stop28h 35mAvianca

Deal found 11/9£774

Mon 22/922:05LHR - AEP

1 stop35h 35mAvianca

Mon 29/907:00AEP - LHR

1 stop28h 35mAvianca

Deal found 12/9£791

Mon 22/922:05LHR - AEP

1 stop35h 35mAvianca

Sat 11/1007:00AEP - LHR

1 stop28h 35mAvianca

Deal found 11/9£792

Wed 24/922:05LHR - EZE

1 stop21h 15mAvianca

Fri 10/1006:50EZE - LHR

1 stop28h 45mAvianca

Deal found 13/9£704

Wed 24/922:05LHR - EZE

1 stop30h 05mAvianca

Thu 23/1016:45EZE - LHR

1 stop18h 50mAvianca

Deal found 11/9£721

Wed 24/922:05LHR - EZE

1 stop21h 15mAvianca

Tue 7/1016:45EZE - LHR

1 stop18h 50mAvianca

Deal found 13/9£723

Mon 27/1021:40LHR - EZE

1 stop35h 10mAvianca

Mon 3/1116:55EZE - LHR

1 stop18h 40mAvianca

Deal found 12/9£703

Mon 27/1021:40LHR - EZE

1 stop35h 10mAvianca

Wed 12/1107:35EZE - LHR

1 stop28h 00mAvianca

Deal found 13/9£734

Tue 28/1021:40LHR - EZE

1 stop35h 10mAvianca

Fri 21/1107:35EZE - LHR

1 stop28h 00mAvianca

Deal found 11/9£725

Tue 28/1021:40LHR - EZE

1 stop35h 10mAvianca

Tue 4/1116:55EZE - LHR

1 stop18h 40mAvianca

Deal found 13/9£727

One-way flights from London to Buenos Aires
Search for one-way flight options from London to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated 13 September 2025.

Thu 1/107:50LGW - EZE

1 stop23h 20mMultiple Airlines

Deal found 12/9£531

Sun 21/916:35LHR - AEP

3 stops43h 45mMultiple Airlines

Deal found 12/9£531

Wed 1/1006:30STN - EZE

2 stops31h 37mMultiple Airlines

Deal found 12/9£531

Thu 9/1008:05LGW - AEP

2 stops37h 25mMultiple Airlines

Deal found 11/9£532

Tue 9/1208:30LTN - EZE

3 stops40h 55mMultiple Airlines

Deal found 12/9£532

Tue 30/1208:15LHR - AEP

2 stops31h 25mMultiple Airlines

Deal found 12/9£533

Wed 1/1014:00LGW - AEP

3 stops31h 30mMultiple Airlines

Deal found 12/9£533

Wed 8/1014:00LGW - EZE

2 stops38h 34mMultiple Airlines

Deal found 11/9£533

Mon 22/922:05LHR - AEP

2 stops59h 25mMultiple Airlines

Deal found 11/9£533

Wed 25/207:25LGW - EZE

1 stop23h 45mMultiple Airlines

Deal found 12/9£534

Tue 2/1206:00LHR - AEP

2 stops23h 20mMultiple Airlines

Deal found 12/9£534

Sun 12/1006:45STN - EZE

2 stops46h 40mMultiple Airlines

Deal found 12/9£534

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Buenos Aires that are best for you.

Fly from

Fly to

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

Mon 8/12

07:00-14:35

1 stop28h 35m

£741

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 23/11

21:40-15:50

1 stop21h 10m

Buenos Aires Ministro Pistarini

Sun 7/12

07:35-14:35

1 stop28h 00m

£752

LondonBuenos Aires

LCY - AEP

LCYAEP

London City

Thu 20/11

08:25-13:40

2 stops32h 15m

Buenos Aires Jorge Newbery

Fri 28/11

08:55-10:55

2 stops23h 00m

£780

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 1/11

08:00-07:20

2 stops50h 20m

Buenos Aires Ministro Pistarini

Sat 22/11

23:55-10:15

1 stop31h 20m

£782

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 18/11

21:40-05:40

1 stop35h 00m

Buenos Aires Jorge Newbery

Thu 27/11

07:00-14:35

1 stop28h 35m

£790

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 29/11

17:45-22:25

2 stops31h 40m

Buenos Aires Ministro Pistarini

Mon 12/1

23:55-14:55

2 stops36h 00m

£818

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 11/10

20:00-16:20

1 stop24h 20m

Buenos Aires Ministro Pistarini

Fri 7/11

13:35-08:35

1 stop16h 00m

£825

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 28/9

22:05-00:10

1 stop30h 05m

Buenos Aires Ministro Pistarini

Sun 26/10

16:55-14:35

1 stop18h 40m

£826

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 14/10

20:00-20:05

1 stop28h 05m

Buenos Aires Ministro Pistarini

Sun 9/11

13:35-08:35

1 stop16h 00m

£833

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Thu 13/11

07:00-05:50

2 stops25h 50m

Buenos Aires Ministro Pistarini

Wed 10/12

07:35-16:20

2 stops29h 45m

£859

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 60 results

...

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?

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

It’s optimal to fly from London to Buenos Aires in the afternoon. By choosing this option you can save up to 23% 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?

Travellers seeking maximum savings on their London to Buenos Aires flight should consider departing on Monday mornings when fares are most often at their lowest. Friday evenings 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?

Madrid (MAD) – chosen by Cheapflights users on 40% of one-stop itineraries from London to Buenos Aires on Cheapflights.

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

Toronto (YYZ) is the most affordable one-stop option, with an average return flight price of £701.

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

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 16h 07m.

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

Flights via Zurich (ZRH) offer the fastest connection on this route, with an average stopover time of 1h 20m.

Reviews of airlines servicing Buenos Aires

Check out reviews from past customers who have flown with Air Europa, Iberia, andLufthansa 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.

Air Europa

7.0

Good

556 reviews

Check prices

Reviews

1 / 10

8.0

Excellent

Christina,Jun 2025

ALC - MAD

It would be nice to have free messaging wifi on a trans Atlantic flight

Air Europa

7.0

Good

556 reviews

Air Europa

7.0

Good

556 reviews

Check prices

Reviews

1 / 10

8.0

Excellent

Christina,Jun 2025

ALC - MAD

It would be nice to have free messaging wifi on a trans Atlantic flight

Iberia

7.0

Good

2,928 reviews

Air Europa

7.0

Good

556 reviews

Check prices

Reviews

1 / 10

8.0

Excellent

Christina,Jun 2025

ALC - MAD

It would be nice to have free messaging wifi on a trans Atlantic flight

Lufthansa

6.8

Okay

7,409 reviews

Air Europa

7.0

Good

556 reviews

Check prices

Reviews

1 / 10

8.0

Excellent

Christina,Jun 2025

ALC - MAD

It would be nice to have free messaging wifi on a trans Atlantic flight

ITA Airways

6.7

Okay

1,036 reviews

Air Europa

7.0

Good

556 reviews

Check prices

Reviews

1 / 10

8.0

Excellent

Christina,Jun 2025

ALC - MAD

It would be nice to have free messaging wifi on a trans Atlantic flight

British Airways

6.7

Okay

7,361 reviews

Air Europa

7.0

Good

556 reviews

Check prices

Reviews

1 / 10

8.0

Excellent

Christina,Jun 2025

ALC - MAD

It would be nice to have free messaging wifi on a trans Atlantic flight

Related info for your journey

How long is the flight from London to Buenos Aires?
A quick flight from London to Buenos Aires can take about 31h 40m. Avianca provides one of the quickest options available for as low as £818. London and Buenos Aires are separated by a distance of 6915 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 £442 on this airline. Additional options worth looking into are Air Europa and ITA Airways, starting at £577 and £612 round-trip. Air France is 52% 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?
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 £1,067. On average you can expect to pay £1,885. The most popular route, (London Heathrow - Buenos Aires Ministro Pistarini), can usually be booked for £752.
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, May is the cheapest month in which you can book a flight from London to Buenos Aires (average of £1,012). Flying from London 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

Top 10 airlines flying from London to Buenos Aires

Airline	Cheapest	Average	Flexibility	On-time
Air France	Cheapest£442	Average£1,196	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Europa	Cheapest£577	Average£996	FlexibilityNo cancel fee	On-time83%	Search Air Europa flights
ITA Airways	Cheapest£612	Average£1,077	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Air Canada	Cheapest£638	Average£669	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Iberia	Cheapest£705	Average£1,026	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Finnair	Cheapest£730	Average£935	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
British Airways	Cheapest£786	Average£1,059	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£813	Average£1,168	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
American Airlines	Cheapest£862	Average£878	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
LATAM Airlines	Cheapest£896	Average£1,092	FlexibilityNo cancel fee	On-time81%	Search LATAM Airlines flights

Fly with Cheapflights

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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Cheap flights from London to Buenos Aires from £531

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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.

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

Cheap flight deals from London to Buenos Aires

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Find flight deals from London to Buenos Aires

Cheapest flights from London to Buenos AiresExplore 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 13 September 2025.

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 13 September 2025.

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Use the filters below to find and compare flights from London to Buenos Aires that are best for you.

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.

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 29 August 2025.

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

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 13 September 2025.

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.

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.

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.

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.

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.

Reviews of airlines servicing Buenos Aires

Check out reviews from past customers who have flown with Air Europa, Iberia, andLufthansa 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.

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?

What are the cheapest airlines flying from London to Buenos Aires round-trip?

What are the most popular routes from London to Buenos Aires?

What are the cheapest flights from London to Buenos Aires?

Can I find deals for flights from London to Buenos Aires that include hotel bookings?

How can I find direct flights from London to Buenos Aires?

Can I find deals for business class flights from London to Buenos Aires?

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

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 13 September 2025.

Top 10 airlines flying from London to Buenos Aires

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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 13 September 2025.