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 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 £915. On average you can expect to pay £1,770. The most popular route, (London Heathrow - Buenos Aires Ministro Pistarini), can usually be booked for £708.

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

Consider Air Canada, Air France or Finnair 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 £946 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £1,042.

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 £928 per person but you can even find prices for as low as £620. 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.

£484+ 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 £919 and £1,166 in August. The cheapest return flight price found within the last 3 days was £736 on Avianca (31 Aug-26 Sept).

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

Cheap flight deals from London to Buenos Aires

Round-trip from	£736
One-way from	£485
Popular in	December
Cheapest in	March
Average price	£1,042
Good round-trip deal	£969 or less

Avianca
31/8-26/9
2 total stops
58h 50m total
London to Buenos Aires

Search Deals

7/9
3 total stops
43h 45m total
London to Buenos Aires

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (£32 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 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 16 August 2025.

Sun 31/822:05LHR - EZE

1 stop30h 05mAvianca

Fri 26/906:50EZE - LHR

1 stop28h 45mAvianca

Deal found 14/8£736

Thu 11/922:05LHR - AEP

1 stop35h 35mAvianca

Wed 22/1007:00AEP - LHR

1 stop28h 35mAvianca

Deal found 15/8£741

Mon 1/919:45LHR - EZE

1 stop30h 00mAir France

Sat 27/923:55EZE - LHR

1 stop28h 05mAir France

Deal found 14/8£742

Wed 3/906:15LHR - EZE

1 stop19h 30mAir France

Wed 24/923:55EZE - LHR

1 stop17h 30mAir France

Deal found 14/8£744

Sat 8/1121:40LHR - EZE

1 stop21h 10mAvianca

Sat 6/1201:45EZE - LHR

1 stop33h 50mAvianca

Deal found 14/8£744

Thu 4/922:05LHR - EZE

1 stop30h 05mAvianca

Thu 25/916:45EZE - LHR

1 stop18h 50mAvianca

Deal found 14/8£746

Sat 8/1121:40LHR - EZE

1 stop21h 10mAvianca

Thu 4/1207:35EZE - LHR

1 stop28h 00mAvianca

Deal found 14/8£747

Thu 4/922:05LHR - EZE

1 stop30h 05mAvianca

Thu 2/1016:45EZE - LHR

1 stop18h 50mAvianca

Deal found 14/8£750

Thu 4/922:05LHR - EZE

1 stop30h 05mAvianca

Sun 21/901:40EZE - LHR

1 stop33h 55mAvianca

Deal found 13/8£751

Mon 1/922:05LHR - EZE

1 stop35h 40mAvianca

Sun 21/901:40EZE - LHR

1 stop33h 55mAvianca

Deal found 14/8£752

Tue 2/922:05LHR - EZE

1 stop30h 05mAvianca

Mon 22/901:40EZE - LHR

1 stop33h 55mAvianca

Deal found 15/8£753

Thu 13/1121:40LHR - EZE

1 stop21h 10mAvianca

Sun 7/1207:35EZE - LHR

1 stop28h 00mAvianca

Deal found 14/8£753

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 16 August 2025.

Thu 11/922:05LHR - AEP

1 stop35h 35mAvianca

Wed 22/1007:00AEP - LHR

1 stop28h 35mAvianca

Deal found 15/8£741

Mon 29/1219:40LGW - EZE

1 stop25h 15mIberia

Mon 9/219:30EZE - LGW

1 stop20h 30mIberia

Deal found 15/8£786

Mon 24/1116:45LCY - EZE

1 stop19h 00mITA Airways

Thu 11/1213:50EZE - LCY

1 stop18h 05mITA Airways

Deal found 15/8£812

Sun 9/1111:55STN - EZE

2 stops30h 55mMultiple Airlines

Fri 28/1121:00EZE - STN

1 stop18h 30mMultiple Airlines

Deal found 13/8£828

Tue 9/910:40LGW - EZE

2 stops26h 15mAmerican Airlines

Thu 2/1022:30EZE - LGW

2 stops28h 05mAmerican Airlines

Deal found 12/8£831

Mon 12/119:15LCY - EZE

1 stop25h 40mBritish Airways

Mon 9/219:30EZE - LCY

1 stop16h 05mBritish Airways

Deal found 15/8£874

Thu 13/1118:40LGW - AEP

2 stops20h 00mSWISS

Sun 7/1214:55AEP - LGW

2 stops23h 55mSWISS

Deal found 14/8£903

Wed 3/917:50LCY - EZE

1 stop15h 40mKLM

Wed 24/914:25EZE - LCY

1 stop15h 05mKLM

Deal found 14/8£913

Thu 13/1121:40LHR - EZE

1 stop21h 10mAvianca

Mon 17/1107:35EZE - LHR

1 stop28h 00mAvianca

Deal found 15/8£751

Wed 11/219:40LGW - EZE

1 stop25h 15mIberia

Wed 4/322:45EZE - LGW

1 stop17h 15mIberia

Deal found 13/8£800

Thu 4/922:05LHR - EZE

1 stop30h 05mAvianca

Wed 24/901:40EZE - LHR

1 stop33h 55mAvianca

Deal found 15/8£753

Sat 8/1118:35STN - EZE

2 stops24h 15mMultiple Airlines

Fri 28/1121:00EZE - STN

1 stop18h 30mMultiple Airlines

Deal found 13/8£829

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 16 August 2025.

Thu 4/921:55LHR - EZE

Nonstop16h 40mBritish Airways

Sat 11/1012:15EZE - LHR

Nonstop15h 55mBritish Airways

Deal found 15/8£839

Mon 12/122:00LHR - EZE

Nonstop16h 45mBritish Airways

Tue 31/312:15EZE - LHR

Nonstop15h 55mBritish Airways

Deal found 15/8£977

Mon 5/122:00LHR - EZE

Nonstop16h 45mBritish Airways

Mon 26/113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 15/8£1,052

Sat 10/122:00LHR - EZE

Nonstop16h 45mBritish Airways

Sat 24/113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 15/8£1,062

Fri 21/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Mon 1/1213:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 15/8£1,067

Mon 19/122:00LHR - EZE

Nonstop16h 45mBritish Airways

Mon 9/213:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 15/8£1,082

Thu 28/821:55LHR - EZE

Nonstop16h 40mBritish Airways

Tue 23/912:15EZE - LHR

Nonstop15h 55mBritish Airways

Deal found 14/8£1,121

Sun 31/821:55LHR - EZE

Nonstop16h 40mBritish Airways

Fri 26/912:15EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 15/8£1,122

Thu 13/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Sat 29/1113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 15/8£1,168

Tue 11/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Tue 25/1113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 16/8£1,237

Mon 13/1022:00LHR - EZE

Nonstop16h 35mBritish Airways

Mon 27/1013:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 16/8£1,262

Last-minute flights from London to Buenos Aires
Discover last-minute flight deals from London to Buenos Aires. Data last updated 16 August 2025 and is based on user searches.

Wed 20/822:05LHR - AEP

1 stop35h 35mAvianca

Sat 6/1207:00AEP - LHR

1 stop28h 35mAvianca

Deal found 13/8£828

Wed 20/821:20LHR - AEP

1 stop23h 40mLATAM Airlines

Sat 6/1222:30AEP - LHR

3 stops36h 35mLATAM Airlines

Deal found 13/8£972

Fri 22/810:55LHR - EZE

2 stops26h 50mDelta

Fri 29/820:10EZE - LHR

1 stop30h 35mDelta

Deal found 15/8£1,053

Sat 23/810:55LHR - EZE

2 stops26h 50mDelta

Sat 6/920:10EZE - LHR

2 stops34h 05mDelta

Deal found 13/8£919

Sat 23/822:05LHR - EZE

1 stop30h 05mAvianca

Fri 5/901:40EZE - LHR

1 stop33h 55mAvianca

Deal found 13/8£946

Sat 23/810:55LHR - EZE

2 stops23h 50mDelta

Sat 30/820:10EZE - LHR

2 stops31h 30mDelta

Deal found 14/8£952

Sat 23/809:20LCY - EZE

2 stops28h 25mDelta

Sat 30/820:10EZE - LCY

2 stops31h 05mDelta

Deal found 14/8£1,026

Sat 23/810:55LHR - EZE

2 stops26h 50mDelta

Fri 29/820:10EZE - LHR

1 stop30h 35mDelta

Deal found 14/8£1,069

Sat 23/815:15LHR - EZE

1 stop22h 30mDelta

Thu 28/820:10EZE - LHR

1 stop30h 35mDelta

Deal found 14/8£1,079

Sun 24/822:05LHR - EZE

1 stop30h 05mAvianca

Mon 8/901:40EZE - LHR

1 stop33h 55mAvianca

Deal found 15/8£823

Sun 24/822:05LHR - AEP

1 stop35h 35mAvianca

Tue 9/907:00AEP - LHR

1 stop28h 35mAvianca

Deal found 15/8£919

Sun 24/806:30LHR - EZE

2 stops31h 15mDelta

Tue 9/920:10EZE - LHR

2 stops34h 05mDelta

Deal found 15/8£924

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 16 August 2025.

Sun 7/914:00LGW - EZE

3 stops43h 45mMultiple Airlines

Deal found 14/8£485

Tue 9/907:40LGW - AEP

2 stops30h 15mMultiple Airlines

Deal found 13/8£485

Fri 5/910:00LGW - EZE

2 stops33h 20mMultiple Airlines

Deal found 13/8£487

Sun 7/914:00LGW - AEP

2 stops28h 40mMultiple Airlines

Deal found 13/8£487

Fri 22/810:00LGW - AEP

2 stops34h 05mMultiple Airlines

Deal found 13/8£489

Fri 22/810:00LGW - EZE

3 stops36h 12mMultiple Airlines

Deal found 13/8£491

Wed 15/1014:00LGW - EZE

3 stops49h 45mMultiple Airlines

Deal found 13/8£493

Sun 21/914:00LGW - EZE

3 stops40h 30mMultiple Airlines

Deal found 13/8£494

Fri 22/813:25STN - EZE

2 stops56h 55mMultiple Airlines

Deal found 13/8£494

Fri 5/1210:55LGW - AEP

2 stops22h 45mMultiple Airlines

Deal found 13/8£495

Sat 6/908:55LGW - EZE

3 stops37h 25mMultiple Airlines

Deal found 14/8£496

Mon 3/1110:05LGW - AEP

3 stops42h 35mMultiple Airlines

Deal found 15/8£496

Fly from

Fly to

Route

Depart

Return

Price

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Thu 11/9

22:05-05:40

1 stop35h 35m

Buenos Aires Jorge Newbery

Wed 22/10

07:00-15:35

1 stop28h 35m

£741

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 13/11

21:40-15:50

1 stop21h 10m

Buenos Aires Ministro Pistarini

Mon 17/11

07:35-14:35

1 stop28h 00m

£751

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 4/9

22:05-00:10

1 stop30h 05m

Buenos Aires Ministro Pistarini

Wed 24/9

01:40-15:35

1 stop33h 55m

£753

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 8/9

22:05-15:20

1 stop21h 15m

Buenos Aires Ministro Pistarini

Thu 25/9

16:45-15:35

1 stop18h 50m

£753

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 4/9

22:05-00:10

1 stop30h 05m

Buenos Aires Ministro Pistarini

Tue 23/9

01:40-15:35

1 stop33h 55m

£753

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 8/9

22:05-00:10

1 stop30h 05m

Buenos Aires Ministro Pistarini

Tue 23/9

01:40-15:35

1 stop33h 55m

£753

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Mon 29/12

19:40-17:55

1 stop25h 15m

Buenos Aires Ministro Pistarini

Mon 9/2

19:30-19:00

1 stop20h 30m

£786

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Wed 11/2

19:40-17:55

1 stop25h 15m

Buenos Aires Ministro Pistarini

Wed 4/3

22:45-19:00

1 stop17h 15m

£800

LondonBuenos Aires

LCY - EZE

LCYEZE

London City

Mon 24/11

16:45-08:45

1 stop19h 00m

Buenos Aires Ministro Pistarini

Thu 11/12

13:50-10:55

1 stop18h 05m

£812

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Wed 21/1

19:40-17:55

1 stop25h 15m

Buenos Aires Ministro Pistarini

Mon 9/2

19:30-19:00

1 stop20h 30m

£817

Flights are sorted by cheapest return flights first.

Deals found on 13/8

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 22% 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 43% of one-stop itineraries from London to Buenos Aires on Cheapflights.

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

Miami (MIA) is the most affordable one-stop option, with an average return flight price of £608.

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 16m.

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

548 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

548 reviews

Air Europa

7.0

Good

548 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

2,884 reviews

Air Europa

7.0

Good

548 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

7,322 reviews

Air Europa

7.0

Good

548 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

1,018 reviews

Air Europa

7.0

Good

548 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

7,267 reviews

Air Europa

7.0

Good

548 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

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 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 £915. On average you can expect to pay £1,770. The most popular route, (London Heathrow - Buenos Aires Ministro Pistarini), can usually be booked for £708.
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 9 airlines flying from London to Buenos Aires

Airline	Cheapest	Average	Flexibility	On-time
Air France	Cheapest£442	Average£1,121	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Europa	Cheapest£577	Average£893	FlexibilityNo cancel fee	On-time83%	Search Air Europa flights
ITA Airways	Cheapest£612	Average£1,078	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Air Canada	Cheapest£638	Average£679	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Iberia	Cheapest£688	Average£1,023	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Finnair	Cheapest£730	Average£961	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
British Airways	Cheapest£763	Average£1,040	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£813	Average£1,200	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
LATAM Airlines	Cheapest£863	Average£1,084	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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London to Buenos Aires from £484

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 11/10. 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 November, booked 60 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from London to Buenos Aires

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

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 16 August 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 16 August 2025.

Cheapflights Fare Finder

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 8 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 16 August 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.

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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 16 August 2025.

Top 9 airlines flying from London to Buenos Aires

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?

Why should you use Cheapflights to find cheap flight tickets from London to Buenos Aires?

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

Can Cheapflights notify me if prices for flights from London to Buenos Aires become cheaper?

100% Free

Book with Flexibility

Travel Smart

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 16 August 2025.