How long is the flight from London to Buenos Aires?

A quick flight from London to Buenos Aires can take about 23h 15m. United Airlines provides one of the quickest options available for as low as £780. 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 £439 on this airline. Additional options worth looking into are Air Europa and ITA Airways, starting at £574 and £609 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 £1,061. On average you can expect to pay £1,874. The most popular route, (London Heathrow - Buenos Aires Ministro Pistarini), can usually be booked for £719.

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

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

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.

£520+ 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 £735 and £996 in October. The cheapest return flight price found within the last 3 days was £700 on Avianca (28 Oct-15 Nov).

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

Cheap flight deals from London to Buenos Aires

Round-trip from	£700
One-way from	£520
Popular in	December
Cheapest in	March
Average price	£851
Good round-trip deal	£1,279 or less

Avianca
28/10-15/11
2 total stops
53h 50m total
London to Buenos Aires

Search Deals

15/1
2 total stops
31h 55m total
London to Buenos Aires

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (£40 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 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 17 September 2025.

Tue 28/1021:40LHR - EZE

1 stop35h 10mAvianca

Sat 15/1116:55EZE - LHR

1 stop18h 40mAvianca

Deal found 15/9£700

Thu 6/1121:40LHR - EZE

1 stop35h 10mAvianca

Sun 16/1101:40EZE - LHR

1 stop33h 55mAvianca

Deal found 15/9£710

Wed 19/1121:40LHR - EZE

1 stop21h 10mAvianca

Mon 9/316:55EZE - LHR

1 stop18h 40mAvianca

Deal found 15/9£711

Tue 11/1121:40LHR - EZE

1 stop21h 10mAvianca

Mon 17/1116:55EZE - LHR

1 stop18h 40mAvianca

Deal found 16/9£714

Mon 10/1121:40LHR - EZE

1 stop21h 10mAvianca

Thu 11/1207:35EZE - LHR

1 stop28h 00mAvianca

Deal found 15/9£716

Thu 13/1121:40LHR - EZE

1 stop35h 10mAvianca

Fri 28/1107:35EZE - LHR

1 stop28h 00mAvianca

Deal found 15/9£717

Wed 24/922:05LHR - EZE

1 stop21h 15mAvianca

Wed 1/1006:50EZE - LHR

1 stop28h 45mAvianca

Deal found 15/9£718

Wed 24/922:05LHR - EZE

1 stop21h 15mAvianca

Thu 23/1016:45EZE - LHR

1 stop18h 50mAvianca

Deal found 15/9£719

Mon 22/922:05LHR - EZE

1 stop21h 15mAvianca

Sun 5/1006:50EZE - LHR

1 stop28h 45mAvianca

Deal found 15/9£719

Thu 9/1022:05LHR - EZE

1 stop30h 05mAvianca

Thu 23/1001:40EZE - LHR

1 stop33h 55mAvianca

Deal found 15/9£723

Mon 17/1121:40LHR - EZE

1 stop35h 10mAvianca

Sat 6/1201:40EZE - LHR

1 stop33h 55mAvianca

Deal found 16/9£724

Fri 21/1116:45LCY - AEP

2 stops36h 35mMultiple Airlines

Wed 3/1209:00AEP - LCY

2 stops22h 55mMultiple Airlines

Deal found 15/9£743

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 17 September 2025.

Tue 28/1012:05LHR - EZE

1 stop23h 15mUnited Airlines

Mon 17/1123:55EZE - LHR

2 stops29h 30mUnited Airlines

Deal found 16/9£780

Mon 17/1109:55LGW - AEP

3 stops42h 45mMultiple Airlines

Sat 6/1200:10AEP - LGW

3 stops42h 50mMultiple Airlines

Deal found 15/9£810

Tue 7/1010:50LHR - EZE

1 stop24h 45mBritish Airways

Thu 23/1012:15EZE - LHR

1 stop15h 40mBritish Airways

Deal found 16/9£823

Thu 13/1112:30LGW - EZE

2 stops47h 30mAmerican Airlines

Mon 17/1121:40EZE - LGW

2 stops56h 20mAmerican Airlines

Deal found 16/9£837

Sat 8/1121:40LHR - AEP

1 stop35h 00mAvianca

Tue 11/1107:00AEP - LHR

1 stop28h 35mAvianca

Deal found 16/9£862

Tue 2/1217:05LCY - EZE

1 stop17h 10mKLM

Tue 16/1216:25EZE - LCY

1 stop21h 10mKLM

Deal found 16/9£862

Tue 13/119:40LGW - AEP

2 stops23h 20mLATAM Airlines

Tue 10/217:15AEP - LGW

2 stops22h 45mLATAM Airlines

Deal found 16/9£903

Tue 13/113:25LHR - AEP

2 stops30h 55mAir Canada

Tue 10/213:40AEP - LHR

2 stops37h 50mAir Canada

Deal found 16/9£922

Mon 12/117:25LGW - EZE

1 stop18h 25mAir Europa

Wed 11/213:15EZE - LGW

1 stop16h 45mAir Europa

Deal found 16/9£952

Tue 13/119:40LGW - EZE

1 stop28h 20mIberia

Tue 10/222:45EZE - LGW

1 stop17h 15mIberia

Deal found 16/9£969

Mon 8/1210:00LCY - EZE

2 stops26h 00mDelta

Tue 20/122:25EZE - LCY

2 stops29h 50mDelta

Deal found 16/9£972

Tue 11/1117:45LCY - EZE

2 stops21h 05mSWISS

Wed 12/1114:40EZE - LCY

2 stops19h 10mSWISS

Deal found 16/9£974

Fri 7/1121:45LGW - EZE

1 stop23h 10mLEVEL

Sun 9/1119:45EZE - LGW

1 stop15h 55mLEVEL

Deal found 15/9£1,034

Tue 11/1113:15LCY - EZE

2 stops22h 30mITA Airways

Tue 25/1113:50EZE - LCY

1 stop18h 05mITA Airways

Deal found 15/9£1,075

Thu 8/114:05STN - EZE

2 stops34h 05mEmirates

Tue 20/123:00EZE - STN

2 stops34h 05mEmirates

Deal found 14/9£1,516

Sat 25/1016:40LHR - EZE

2 stops41h 40mUnited Airlines

Fri 14/1123:55EZE - LHR

2 stops30h 45mUnited Airlines

Deal found 16/9£780

Tue 7/1020:00LHR - EZE

1 stop24h 20mBritish Airways

Thu 6/1113:35EZE - LHR

1 stop16h 00mBritish Airways

Deal found 16/9£823

Thu 20/1116:45LCY - AEP

2 stops31h 15mMultiple Airlines

Tue 2/1203:15AEP - LCY

2 stops33h 55mMultiple Airlines

Deal found 15/9£843

Sat 25/1016:40LHR - EZE

2 stops41h 40mUnited Airlines

Sun 16/1122:05EZE - LHR

1 stop30h 25mUnited Airlines

Deal found 16/9£780

Mon 1/1221:40LHR - AEP

1 stop35h 00mAvianca

Mon 15/1207:00AEP - LHR

1 stop28h 35mAvianca

Deal found 15/9£908

Sat 4/1020:40LGW - EZE

1 stop23h 40mBritish Airways

Sun 26/1014:20EZE - LGW

1 stop17h 30mBritish Airways

Deal found 16/9£830

Tue 10/319:40LGW - AEP

2 stops23h 20mLATAM Airlines

Fri 20/317:15AEP - LGW

2 stops22h 45mLATAM Airlines

Deal found 16/9£930

Sun 26/1012:05LHR - EZE

1 stop23h 15mUnited Airlines

Thu 13/1123:55EZE - LHR

2 stops32h 10mUnited Airlines

Deal found 16/9£780

Tue 4/1120:10LGW - AEP

3 stops40h 10mMultiple Airlines

Sat 29/1103:40AEP - LGW

3 stops32h 15mMultiple Airlines

Deal found 16/9£870

Thu 13/1110:00LGW - EZE

1 stop25h 50mAir Europa

Mon 17/1113:15EZE - LGW

1 stop16h 45mAir Europa

Deal found 16/9£959

Sun 15/218:00LHR - AEP

2 stops26h 20mAir Canada

Wed 4/313:40AEP - LHR

2 stops38h 30mAir Canada

Deal found 15/9£1,016

Tue 17/217:45LCY - EZE

2 stops21h 05mSWISS

Wed 4/314:40EZE - LCY

2 stops19h 10mSWISS

Deal found 15/9£1,027

Sun 26/1012:05LHR - EZE

1 stop23h 15mUnited Airlines

Mon 17/1123:55EZE - LHR

2 stops29h 00mUnited Airlines

Deal found 16/9£780

Sun 7/1211:20LGW - EZE

2 stops24h 50mAmerican Airlines

Sat 27/1223:59EZE - LGW

2 stops30h 01mAmerican Airlines

Deal found 16/9£1,043

Wed 11/219:40LGW - AEP

2 stops23h 20mLATAM Airlines

Sat 28/222:30AEP - LGW

2 stops41h 30mLATAM Airlines

Deal found 15/9£965

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 17 September 2025.

Sun 11/122:00LHR - EZE

Nonstop16h 45mBritish Airways

Thu 22/113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 16/9£1,227

Fri 21/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Wed 3/1213:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 15/9£1,255

Mon 5/122:00LHR - EZE

Nonstop16h 45mBritish Airways

Mon 26/113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 15/9£1,285

Tue 11/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Mon 17/1113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 16/9£1,353

Wed 12/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Mon 17/1113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 16/9£1,354

Tue 11/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Tue 25/1113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 16/9£1,428

Thu 13/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Fri 28/1113:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 16/9£1,451

Sat 24/122:00LHR - EZE

Nonstop16h 45mBritish Airways

Fri 13/213:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 16/9£1,481

Sat 14/322:00LHR - EZE

Nonstop16h 45mBritish Airways

Sat 21/313:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 15/9£1,508

Mon 10/1122:00LHR - EZE

Nonstop16h 45mBritish Airways

Fri 12/1213:35EZE - LHR

Nonstop16h 00mBritish Airways

Deal found 16/9£1,612

Last-minute flights from London to Buenos Aires
Discover last-minute flight deals from London to Buenos Aires. Data last updated 17 September 2025 and is based on user searches.

Mon 22/922:05LHR - EZE

1 stop21h 15mAvianca

Sun 5/1006:50EZE - LHR

1 stop28h 45mAvianca

Deal found 15/9£719

Mon 22/922:05LHR - EZE

1 stop21h 15mAvianca

Sun 28/901:40EZE - LHR

1 stop33h 55mAvianca

Deal found 15/9£741

Mon 22/922:05LHR - EZE

1 stop21h 15mAvianca

Thu 9/1001:40EZE - LHR

1 stop33h 55mAvianca

Deal found 15/9£743

Mon 22/922:05LHR - AEP

1 stop35h 35mAvianca

Mon 29/907:00AEP - LHR

1 stop28h 35mAvianca

Deal found 15/9£762

Wed 24/922:05LHR - EZE

1 stop21h 15mAvianca

Wed 1/1006:50EZE - LHR

1 stop28h 45mAvianca

Deal found 15/9£718

Wed 24/922:05LHR - EZE

1 stop21h 15mAvianca

Thu 23/1016:45EZE - LHR

1 stop18h 50mAvianca

Deal found 15/9£719

Wed 24/922:05LHR - EZE

1 stop21h 15mAvianca

Thu 9/1016:45EZE - LHR

1 stop18h 50mAvianca

Deal found 15/9£727

Wed 24/922:05LHR - AEP

1 stop35h 35mAvianca

Thu 23/1007:00AEP - LHR

1 stop28h 35mAvianca

Deal found 16/9£765

Wed 24/922:05LHR - AEP

1 stop35h 35mAvianca

Wed 8/1007:00AEP - LHR

1 stop28h 35mAvianca

Deal found 15/9£768

Thu 9/1022:05LHR - EZE

1 stop30h 05mAvianca

Thu 23/1001:40EZE - LHR

1 stop33h 55mAvianca

Deal found 15/9£723

Thu 9/1022:05LHR - EZE

1 stop35h 40mAvianca

Fri 7/1116:55EZE - LHR

1 stop18h 40mAvianca

Deal found 16/9£728

Tue 28/1021:40LHR - EZE

1 stop35h 10mAvianca

Sat 15/1116:55EZE - LHR

1 stop18h 40mAvianca

Deal found 15/9£700

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 17 September 2025.

Thu 15/120:05STN - EZE

2 stops31h 55mMultiple Airlines

Deal found 16/9£520

Sat 24/106:05LGW - AEP

3 stops30h 45mMultiple Airlines

Deal found 16/9£521

Wed 31/1207:40STN - EZE

2 stops25h 10mMultiple Airlines

Deal found 15/9£521

Mon 26/109:55LHR - EZE

2 stops35h 48mMultiple Airlines

Deal found 15/9£521

Wed 18/215:45LHR - AEP

3 stops23h 55mMultiple Airlines

Deal found 16/9£523

Tue 30/909:30LTN - EZE

2 stops52h 37mMultiple Airlines

Deal found 16/9£523

Tue 7/1014:00LGW - AEP

2 stops31h 30mMultiple Airlines

Deal found 16/9£524

Sun 1/320:00STN - EZE

2 stops26h 00mMultiple Airlines

Deal found 15/9£524

Wed 14/109:15LHR - EZE

2 stops19h 15mMultiple Airlines

Deal found 15/9£524

Sun 18/117:15LTN - EZE

1 stop28h 45mMultiple Airlines

Deal found 16/9£524

Tue 21/1021:35LGW - EZE

3 stops40h 32mMultiple Airlines

Deal found 16/9£524

Sat 17/106:05LGW - AEP

3 stops30h 45mMultiple Airlines

Deal found 16/9£524

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 - EZE

LHREZE

London Heathrow

Tue 28/10

12:05-08:20

1 stop23h 15m

Buenos Aires Ministro Pistarini

Mon 17/11

23:55-08:25

2 stops29h 30m

£780

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 25/10

16:40-06:20

2 stops41h 40m

Buenos Aires Ministro Pistarini

Fri 14/11

23:55-09:40

2 stops30h 45m

£780

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 25/10

16:40-06:20

2 stops41h 40m

Buenos Aires Ministro Pistarini

Sun 16/11

22:05-07:30

1 stop30h 25m

£780

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 26/10

12:05-08:20

1 stop23h 15m

Buenos Aires Ministro Pistarini

Thu 13/11

23:55-11:05

2 stops32h 10m

£780

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 26/10

12:05-08:20

1 stop23h 15m

Buenos Aires Ministro Pistarini

Mon 17/11

23:55-07:55

2 stops29h 00m

£780

LondonBuenos Aires

LGW - AEP

LGWAEP

London Gatwick

Mon 17/11

09:55-01:40

3 stops42h 45m

Buenos Aires Jorge Newbery

Sat 6/12

00:10-22:00

3 stops42h 50m

£810

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 7/10

10:50-07:35

1 stop24h 45m

Buenos Aires Ministro Pistarini

Thu 23/10

12:15-07:55

1 stop15h 40m

£823

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 7/10

20:00-16:20

1 stop24h 20m

Buenos Aires Ministro Pistarini

Thu 6/11

13:35-08:35

1 stop16h 00m

£823

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Sat 4/10

20:40-16:20

1 stop23h 40m

Buenos Aires Ministro Pistarini

Sun 26/10

14:20-10:50

1 stop17h 30m

£830

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Thu 13/11

12:30-09:00

2 stops47h 30m

Buenos Aires Ministro Pistarini

Mon 17/11

21:40-09:00

2 stops56h 20m

£837

Flights are sorted by cheapest return flights first.

Deals found on 16/9

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 38% 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 £697.

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

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

2,924 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

7,407 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

7,363 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 23h 15m. United Airlines provides one of the quickest options available for as low as £780. 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 £439 on this airline. Additional options worth looking into are Air Europa and ITA Airways, starting at £574 and £609 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 £1,061. On average you can expect to pay £1,874. The most popular route, (London Heathrow - Buenos Aires Ministro Pistarini), can usually be booked for £719.
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£439	Average£1,189	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Europa	Cheapest£574	Average£1,111	FlexibilityNo cancel fee	On-time83%	Search Air Europa flights
ITA Airways	Cheapest£609	Average£1,071	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Air Canada	Cheapest£634	Average£665	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Avianca	Cheapest£696	Average£782	FlexibilityNo cancel fee	On-time71%	Search Avianca flights
Iberia	Cheapest£707	Average£1,027	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Finnair	Cheapest£726	Average£930	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
British Airways	Cheapest£785	Average£1,049	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£808	Average£1,161	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
LATAM Airlines	Cheapest£858	Average£1,125	FlexibilityNo cancel fee	On-time81%	Search LATAM Airlines flights

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Cheap flights from London to Buenos Aires from £520

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 15/1. 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 May, booked 60 days in advance, depart on a Monday or Tuesday 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 17 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 17 September 2025.

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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.

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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 12 September 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 17 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?

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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 17 September 2025.

Top 10 airlines flying from London to Buenos Aires

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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?

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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 17 September 2025.