What is the cheapest airline that flies from London to Buenos Aires?

Avianca, United Airlines, and SWISS are the most popular carriers operating from London to Buenos Aires

When did momondo last update prices for flights from London to Buenos Aires?

Prices for flights from London to Buenos Aires are updated daily.

How old do you have to be to fly from London to Buenos Aires?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to Buenos Aires.

What documentation or ID do you need to fly to Buenos Aires?

The travel and health documents you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

R12 263 Cheap Flights from London to Buenos Aires in 2026/27

Find the cheapest flights from London to Buenos Aires

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One-way

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Enter your travel dates to find the best prices.

12:05 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

22h 15m1 stop Houston George Bush Intcntl

23:55 - 10:15EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

31h 20m1 stop Houston George Bush Intcntl

R21 518United Airlines

Sun, Nov 22 - Tue, Dec 8

12:05 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

22h 15m1 stop Houston George Bush Intcntl

22:05 - 5:55EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

28h 50m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

R21 534United Airlines

Mon, Nov 16 - Tue, Dec 8

12:05 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

22h 15m1 stop Houston George Bush Intcntl

23:55 - 9:40EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

30h 45m2 stops Houston George Bush Intcntl Denver Intl

R21 551United Airlines

Sat, Nov 14 - Mon, Nov 16

12:05 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

22h 15m1 stop Houston George Bush Intcntl

22:05 - 5:55EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

28h 50m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

R21 567United Airlines

Thu, Dec 3 - Sun, Dec 6

11:35 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

46h 45m2 stops Denver Intl Houston George Bush Intcntl

23:55 - 7:40EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

28h 45m1 stop Houston George Bush Intcntl

R21 601United Airlines

Sat, Nov 21 - Sun, Dec 6

11:35 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

46h 45m2 stops Denver Intl Houston George Bush Intcntl

23:55 - 7:40EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

28h 45m1 stop Houston George Bush Intcntl

R21 617United Airlines

Sat, Nov 21 - Mon, Dec 7

8:30 - 7:55LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

26h 25m1 stop Frankfurt am Main

14:40 - 13:00EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

19h 20m2 stops Sao Paulo Guarulhos Intl Zurich

R21 651Multiple Airlines

Wed, Nov 25 - Wed, Dec 9

8:00 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

26h 20m2 stops Newark Houston George Bush Intcntl

23:55 - 5:55EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

27h 00m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

R21 684United Airlines

Thu, Jan 21 - Thu, Feb 11

11:35 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

46h 45m2 stops Denver Intl Houston George Bush Intcntl

22:05 - 5:55EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

28h 50m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

R21 700United Airlines

Mon, Feb 1 - Fri, Feb 19

7:50 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

50h 30m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

22:05 - 5:55EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

28h 50m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

R21 717United Airlines

Mon, Feb 1 - Fri, Feb 19

Cheap last-minute flights

Enter your travel dates to find the best prices.

18:00 - 9:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

66h 20m2 stops Newark Houston George Bush Intcntl

23:55 - 7:40EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

28h 45m1 stop Houston George Bush Intcntl

R21 534United Airlines

Mon, Nov 9 - Sun, Nov 22

13:35 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

44h 45m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

23:55 - 7:40EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

28h 45m1 stop Houston George Bush Intcntl

R22 382United Airlines

Tue, Nov 10 - Wed, Feb 17

13:35 - 9:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

46h 45m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

22:05 - 6:40EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

29h 35m2 stops Houston George Bush Intcntl Washington, D.C. Dulles Intl

R22 448United Airlines

Tue, Nov 10 - Wed, Feb 17

13:35 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

44h 45m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

23:55 - 7:40EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

28h 45m1 stop Houston George Bush Intcntl

R22 465United Airlines

Tue, Nov 10 - Wed, Feb 17

18:00 - 9:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

66h 20m2 stops Newark Houston George Bush Intcntl

22:05 - 7:40EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

30h 35m1 stop Houston George Bush Intcntl

R22 714United Airlines

Mon, Nov 9 - Mon, Nov 30

18:00 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

64h 20m2 stops Newark Houston George Bush Intcntl

22:05 - 9:40EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

32h 35m2 stops Houston George Bush Intcntl Denver Intl

R22 731United Airlines

Mon, Nov 9 - Mon, Nov 23

13:35 - 7:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

44h 45m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

23:55 - 7:40EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

28h 45m1 stop Houston George Bush Intcntl

R23 561United Airlines

Tue, Nov 10 - Wed, Feb 17

16:00 - 10:55LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

45h 55m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

21:30 - 6:50EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

30h 20m2 stops Atlanta Hartsfield-Jackson Boston Logan Intl

R23 595Delta

Tue, Nov 10 - Thu, Nov 26

18:00 - 9:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

66h 20m2 stops Newark Houston George Bush Intcntl

22:05 - 7:40EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

30h 35m1 stop Houston George Bush Intcntl

R23 644United Airlines

Mon, Nov 9 - Mon, Nov 30

18:00 - 9:20LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

66h 20m2 stops Newark Houston George Bush Intcntl

22:05 - 5:55EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

28h 50m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

R23 728United Airlines

Mon, Nov 9 - Mon, Nov 30

Cheap direct flights

Enter your travel dates to find the best prices.

19:25 - 5:25LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

14h 00mdirect

15:10 - 8:30EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

13h 20mdirect

R21 783British Airways

Tue, Mar 30 - Mon, Apr 12

19:25 - 5:25LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

14h 00mdirect

15:10 - 8:30EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

13h 20mdirect

R23 860British Airways

Mon, Mar 29 - Thu, Apr 8

19:25 - 5:25LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

14h 00mdirect

15:10 - 8:30EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

13h 20mdirect

R28 928British Airways

Mon, Mar 29 - Sat, Apr 10

19:25 - 5:25LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

14h 00mdirect

15:10 - 8:30EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

13h 20mdirect

R28 978British Airways

Sat, May 1 - Sat, May 8

19:25 - 5:25LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

14h 00mdirect

15:10 - 8:30EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

13h 20mdirect

R29 011British Airways

Sat, May 1 - Sat, May 8

19:25 - 5:25LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

14h 00mdirect

15:10 - 8:30EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

13h 20mdirect

R29 394British Airways

Sat, May 1 - Sat, May 8

19:25 - 5:25LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

14h 00mdirect

15:10 - 8:30EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

13h 20mdirect

R30 324British Airways

Sat, May 1 - Sat, May 8

22:00 - 11:45LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

16h 45mdirect

13:35 - 8:20EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

15h 45mdirect

R34 478British Airways

Mon, Mar 1 - Mon, Mar 15

22:00 - 11:45LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

16h 45mdirect

13:35 - 8:20EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

15h 45mdirect

R45 112British Airways

Fri, Nov 27 - Wed, Dec 9

22:00 - 11:45LHR London Heathrow-EZE Buenos Aires Ministro Pistarini

16h 45mdirect

13:35 - 8:20EZE Buenos Aires Ministro Pistarini-LHR London Heathrow

15h 45mdirect

R45 876British Airways

Mon, Nov 30 - Tue, Dec 15

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British Airways flights from London to Buenos Aires

Our best British Airways deals on London to Buenos Aires flight tickets

British Airways

Mar 30

LHR19:25London Heathrow

14h 00m

EZE5:25Buenos Aires Ministro Pistarini

Apr 12

EZE15:10Buenos Aires Ministro Pistarini

13h 20m

LHR8:30London Heathrow

R21 783

British Airways

Mar 20

LHR19:40London Heathrow

24h 45m

1 stop

EZE17:25Buenos Aires Ministro Pistarini

Apr 1

EZE15:10Buenos Aires Ministro Pistarini

13h 20m

LHR8:30London Heathrow

R22 947

British Airways

Mar 20

LHR19:40London Heathrow

24h 45m

1 stop

EZE17:25Buenos Aires Ministro Pistarini

Apr 1

EZE15:10Buenos Aires Ministro Pistarini

13h 20m

LHR8:30London Heathrow

R22 963

KLM flights from London to Buenos Aires

Our best KLM deals on London to Buenos Aires flight tickets

KLM

Jan 21

LHR20:25London Heathrow

26h 55m

2 stops

EZE20:20Buenos Aires Ministro Pistarini

Feb 2

EZE22:40Buenos Aires Ministro Pistarini

19h 10m

2 stops

LHR20:50London Heathrow

R22 930

KLM

Nov 9

LHR20:25London Heathrow

34h 50m

2 stops

EZE4:15Buenos Aires Ministro Pistarini

Nov 24

EZE17:00Buenos Aires Ministro Pistarini

20h 05m

1 stop

LHR16:05London Heathrow

R39 911

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 22/11

12:05-7:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Tue 8/12

23:55-10:15

1 stop31h 20m

R21 518

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 16/11

12:05-7:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Tue 8/12

22:05-5:55

2 stops28h 50m

R21 534

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 14/11

12:05-7:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Mon 16/11

23:55-9:40

2 stops30h 45m

R21 551

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Thu 3/12

12:05-7:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Sun 6/12

22:05-5:55

2 stops28h 50m

R21 567

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 21/11

11:35-7:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

Sun 6/12

23:55-7:40

1 stop28h 45m

R21 601

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 21/11

11:35-7:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

Mon 7/12

23:55-7:40

1 stop28h 45m

R21 617

Fastest return journey

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Wed 25/11

8:30-7:55

1 stop26h 25m

Buenos Aires Ministro Pistarini

Wed 9/12

14:40-13:00

2 stops19h 20m

R21 651

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Thu 21/1

8:00-7:20

2 stops26h 20m

Buenos Aires Ministro Pistarini

Thu 11/2

23:55-5:55

2 stops27h 00m

R21 684

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 1/2

11:35-7:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

Fri 19/2

22:05-5:55

2 stops28h 50m

R21 700

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 1/2

7:50-7:20

2 stops50h 30m

Buenos Aires Ministro Pistarini

Fri 19/2

22:05-5:55

2 stops28h 50m

R21 717

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to Buenos Aires

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between London and Buenos Aires?

Prices are currently typical for flights on this route.

Typical prices usually range from R20 122 to R25 821.
The lowest price recently found on this route was R21 518.

What is the cheapest month to fly to Buenos Aires?

If you aren’t able to travel to Buenos Aires during the month of May, then flying in April is also cheap. Prices for this month can be found on momondo for an average of R20 537.

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

You are more likely to see cheaper flights to Buenos Aires from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around R23 254 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from London for as low as R21 152 on momondo.

How have London to Buenos Aires flight prices changed over time?

As of November 2026, prices for London to Buenos Aires flights are approximately 2% cheaper when compared to flights at the same time last year.

When to book flights from London to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from London to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London to Buenos Aires (LON to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Buenos Aires

Best price found	R12 263
Direct flights	Every day
Airports in Buenos Aires	2 airports

The best one-way flight to Buenos Aires from London in the past 72 hours is R12 263. The best return flight deal from London to Buenos Aires found on momondo in the last 72 hours is R21 518.

Direct flights go from London to Buenos Aires every day.

There are 2 airports in Buenos Aires. From London there are direct flights to Buenos Aires Ministro Pistarini (EZE).

Search flight deals

Frequently asked questions about flying from London to Buenos Aires

How far is London to Buenos Aires by plane?
A flight from London to Buenos Aires will travel around 11120,2 km.
When did momondo last update prices for flights from London to Buenos Aires?
Prices for flights from London to Buenos Aires are updated daily.
How old do you have to be to fly from London to Buenos Aires?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to Buenos Aires.
What documentation or ID do you need to fly to Buenos Aires?
The travel and health documents you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Buenos Aires?
momondo data reveals that the most frequently booked plane model on the route from London to Buenos Aires is Boeing 777, representing 91,89% of all bookings. The subsequent popular models are Airbus A350-900 at 5,41% and Airbus A330-200 at 2,70%.

Why use momondo?

Why should I use momondo to find a flight deal from London to Buenos Aires?

It is quick and easy to find London to Buenos Aires flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Buenos Aires that suits you.

Can I find flights from London to Buenos Aires with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Buenos Aires from London with this policy.

How can momondo help me find flights from London to Buenos Aires?

momondo helps you find the best flight between London and Buenos Aires by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Buenos Aires right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Buenos Aires, momondo offers a useful price alert feature which will track prices for flights to Buenos Aires from London and alert you when they change.

An easier way to manage your Buenos Aires trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Nearby airports

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Complete your trip

Feeling lucky

Fly into one of these airports located in Buenos Aires

Buenos Aires Jorge Newbery Airport

Buenos Aires Ministro Pistarini Airport

Cheap flights from London to Buenos Aires from R12 263

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Buenos Aires departing on 22/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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British Airways flights from London to Buenos Aires

Our best British Airways deals on London to Buenos Aires flight tickets

KLM flights from London to Buenos Aires

Our best KLM deals on London to Buenos Aires flight tickets

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

See travel insights to Buenos Aires from

How to get the cheapest flight ticket from London to Buenos Aires

What is the typical price of a round-trip flight between London and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

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

How have London to Buenos Aires flight prices changed over time?

What is the cheapest airline that flies from London to Buenos Aires?

When to book flights from London to Buenos Aires

Cheap London to Buenos Aires (LON to BUE) flight deals and tips

Best price found

Direct flights

Airports in Buenos Aires

Frequently asked questions about flying from London to Buenos Aires

Why use momondo?

An easier way to manage your Buenos Aires trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 27.4 km from Buenos Aires

Fly to other destinations from London

According to popular flight searches on momondo this year

Complete your trip to Buenos Aires

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According to popular flight searches on momondo this year