Which layover airport offers the lowest fares from London to Buenos Aires?

Flights via New York (JFK) offer the lowest average round-trip price of $1,176.

What day of the week experiences the fewest flight delays on this route?

Sunday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which layover airport has the shortest connection time from London to Buenos Aires?

Frankfurt am Main (FRA) has the shortest average layover time for this route: 1h 05m.

What is the most punctual flight time for London to Buenos Aires flights?

Generally, flights departing in the evening tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

How many flights depart from London to Buenos Aires on average per week?

21 flights are operational weekly from London to Buenos Aires as of May 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

Which layover airport has the shortest travel time from London to Buenos Aires?

Flights connecting via Frankfurt am Main (FRA) have the shortest average one-way travel time: 16h 25m.

How often are flights from London to Buenos Aires delayed?

Historically, on average around 0% of flights between London and Buenos Aires have experienced a delay on any given week. The average delay length over the past 12 months has been 0 minutes.

How many flights depart from London to Buenos Aires on average per day?

As of May 2026, there are 3 flights per day flying from London to Buenos Aires. The most common time of day flights depart is 9:00PM, with 100% of flights taking off in the evening.

Which airport is the most popular layover for flights between London and Buenos Aires?

Madrid (MAD) was the most common stop: 68% of momondo users choosing 1-stop flights on this route connected there.

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

Avianca is the most popular carrier 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 refresh 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 required for your trip to Buenos Aires can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buenos Aires. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$533 Cheap Flights from London to Buenos Aires in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $1,459 to $1,112. The lowest price recently found on this route was $1,074.

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from London to Buenos Aires

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:40 pm - 10:50 am

LHR

EZE

20h 10m

2 stops

4:35 pm - 10:10 pm

EZE

LHR

25h 35m

1 stop

$1,074Multiple Airlines

Tue, Jun 16 - Fri, Jun 26

8:05 pm - 10:50 am

LHR

EZE

42h 45m

2 stops

1:30 pm - 5:50 pm

EZE

LHR

24h 20m

2 stops

$1,080SWISS

Mon, Jun 15 - Wed, Jun 24

8:05 pm - 10:50 am

LHR

EZE

42h 45m

2 stops

1:30 pm - 5:50 pm

EZE

LHR

24h 20m

2 stops

$1,087SWISS

Mon, Jun 15 - Wed, Jun 24

7:55 pm - 10:50 am

LHR

AEP

41h 55m

2 stops

1:35 pm - 9:35 pm

AEP

LHR

29h 00m

2 stops

$1,110TAP AIR PORTUGAL

Sun, Nov 15 - Tue, Dec 1

10:05 pm - 5:40 am

LHR

AEP

35h 35m

1 stop

7:00 am - 3:35 pm

AEP

LHR

28h 35m

1 stop

$1,113Avianca

Sun, Jun 14 - Fri, Jun 26

9:45 pm - 10:45 am

LHR

EZE

17h 00m

1 stop

12:25 pm - 8:10 am

EZE

LHR

15h 45m

1 stop

$1,145British Airways

Wed, Jun 3 - Wed, Jun 17

9:40 pm - 5:40 am

LHR

AEP

35h 00m

1 stop

7:00 am - 2:35 pm

AEP

LHR

28h 35m

1 stop

$1,187Avianca

Fri, Nov 6 - Thu, Nov 26

8:00 am - 9:20 am

LHR

AEP

29h 20m

2 stops

6:20 pm - 6:50 pm

AEP

LHR

20h 30m

2 stops

$1,192TAP AIR PORTUGAL

Tue, Sep 8 - Tue, Sep 29

9:15 am - 6:25 am

LCY

EZE

25h 10m

1 stop

4:35 pm - 5:55 pm

EZE

LCY

21h 20m

1 stop

$1,254Lufthansa

Mon, Jun 1 - Mon, Jun 22

7:15 pm - 7:55 pm

LCY

EZE

28h 40m

1 stop

5:50 pm - 3:15 pm

EZE

LCY

17h 25m

1 stop

$1,275British Airways

Mon, Jun 1 - Mon, Jun 22

British Airways flights from London to Buenos Aires

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

British Airways

Jun 3

LHR9:45 pmLondon Heathrow

17h 00m

1 stop

EZE10:45 amBuenos Aires Ministro Pistarini

Jun 17

EZE12:25 pmBuenos Aires Ministro Pistarini

15h 45m

1 stop

LHR8:10 amLondon Heathrow

$1,145

British Airways

Jul 14

LHR8:00 pmLondon Heathrow

24h 05m

1 stop

EZE4:05 pmBuenos Aires Ministro Pistarini

Oct 13

EZE12:25 pmBuenos Aires Ministro Pistarini

15h 45m

1 stop

LHR8:10 amLondon Heathrow

$1,175

British Airways

Jul 14

LGW8:40 pmLondon Gatwick

23h 25m

1 stop

EZE4:05 pmBuenos Aires Ministro Pistarini

Jul 30

EZE1:00 pmBuenos Aires Ministro Pistarini

17h 50m

1 stop

LGW10:50 amLondon Gatwick

$1,205

Lufthansa flights from London to Buenos Aires

Our best Lufthansa deals on London to Buenos Aires flight tickets

Lufthansa

Jun 7

LHR6:30 amLondon Heathrow

27h 55m

1 stop

EZE6:25 amBuenos Aires Ministro Pistarini

Jun 16

EZE4:35 pmBuenos Aires Ministro Pistarini

20h 05m

1 stop

LHR4:40 pmLondon Heathrow

$1,173

Lufthansa

Sep 6

LHR6:30 amLondon Heathrow

27h 55m

1 stop

EZE6:25 amBuenos Aires Ministro Pistarini

Oct 1

EZE4:35 pmBuenos Aires Ministro Pistarini

25h 35m

1 stop

LHR10:10 pmLondon Heathrow

$1,235

Lufthansa

May 24

LHR1:30 pmLondon Heathrow

20h 55m

1 stop

EZE6:25 amBuenos Aires Ministro Pistarini

Jun 11

EZE4:35 pmBuenos Aires Ministro Pistarini

25h 35m

1 stop

LHR10:10 pmLondon Heathrow

$1,249

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 6/16

6:40 pm-10:50 am

2 stops20h 10m

Buenos Aires Ministro Pistarini

Fri 6/26

4:35 pm-10:10 pm

1 stop25h 35m

$1,074

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 6/15

8:05 pm-10:50 am

2 stops42h 45m

Buenos Aires Ministro Pistarini

Wed 6/24

1:30 pm-5:50 pm

2 stops24h 20m

$1,080

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 6/15

8:05 pm-10:50 am

2 stops42h 45m

Buenos Aires Ministro Pistarini

Wed 6/24

1:30 pm-5:50 pm

2 stops24h 20m

$1,087

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sun 11/15

7:55 pm-10:50 am

2 stops41h 55m

Buenos Aires Jorge Newbery

Tue 12/1

1:35 pm-9:35 pm

2 stops29h 00m

$1,110

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sun 6/14

10:05 pm-5:40 am

1 stop35h 35m

Buenos Aires Jorge Newbery

Fri 6/26

7:00 am-3:35 pm

1 stop28h 35m

$1,113

Quickest round-trip

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 6/3

9:45 pm-10:45 am

1 stop17h 00m

Buenos Aires Ministro Pistarini

Wed 6/17

12:25 pm-8:10 am

1 stop15h 45m

$1,145

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Fri 11/6

9:40 pm-5:40 am

1 stop35h 00m

Buenos Aires Jorge Newbery

Thu 11/26

7:00 am-2:35 pm

1 stop28h 35m

$1,187

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Tue 9/8

8:00 am-9:20 am

2 stops29h 20m

Buenos Aires Jorge Newbery

Tue 9/29

6:20 pm-6:50 pm

2 stops20h 30m

$1,192

LondonBuenos Aires

LCY - EZE

LCYEZE

London City

Mon 6/1

9:15 am-6:25 am

1 stop25h 10m

Buenos Aires Ministro Pistarini

Mon 6/22

4:35 pm-5:55 pm

1 stop21h 20m

$1,254

LondonBuenos Aires

LCY - EZE

LCYEZE

London City

Mon 6/1

7:15 pm-7:55 pm

1 stop28h 40m

Buenos Aires Ministro Pistarini

Mon 6/22

5:50 pm-3:15 pm

1 stop17h 25m

$1,275

Flights are sorted by cheapest round-trip 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

Delays

Layovers

Other information

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?

The cheapest month to fly to Buenos Aires from London is in April. Flight prices, which tend to average around $525, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Buenos Aires from London during September instead. Flights to Buenos Aires in September, while not as cheap as those in April, still average around $565.

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 $1,387 when searching weeks out. 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 $1,116 on momondo.

Can stopping save me money on London to Buenos Aires flights?

You could potentially save up to 44% on your flight if you consider stops on a London to Buenos Aires flight.

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

As of May 2026, prices for London to Buenos Aires flights are approximately 4% 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 round-trip 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

Fastest flight time	16h 25m
Direct flights	None

The fastest flight from London to Buenos Aires takes 16h 25m

There are no direct flights from London to Buenos Aires. There are no popular flight routes from London to Buenos Aires.

Search flight deals

Frequently asked questions about flying from London to Buenos Aires

How far is London to Buenos Aires by plane?
Buenos Aires is 6909.8 mi away from London. A reasonable flight in good conditions will take 16h 25m.
When did momondo last update prices for flights from London to Buenos Aires?
Prices for flights from London to Buenos Aires refresh 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 required for your trip to Buenos Aires can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buenos Aires. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from London to Buenos Aires?
Based on momondo bookings for flights between London and Buenos Aires, the leading plane model is Boeing 777, making up 77.78% of the total bookings. Other popular models include Airbus A350-1000 with 22.22%.
What is the most popular airline from London to Buenos Aires?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London to Buenos Aires is British Airways (48% of total bookings). The next most popular airlines are LATAM Airlines (26%) and Lufthansa (26%).

Why use momondo?

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

Finding the right flight to Buenos Aires from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Buenos Aires quick and easy, saving you time and money.

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

All flight searches from London to Buenos Aires on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Buenos Aires.

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, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Fri 6/19

Fri 6/26

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Argentina

Nearby airports

Cabin classes

Other Argentina destinations

Other flights from London

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 $533

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 7/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from London to Buenos Aires

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

British Airways flights from London to Buenos Aires

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

Lufthansa flights from London to Buenos Aires

Our best Lufthansa deals on London to Buenos Aires flight tickets

momondo Fare Finder

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?

Can stopping save me money on London to Buenos Aires flights?

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

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

How often are flights from London to Buenos Aires delayed?

What is the most punctual flight time for London to Buenos Aires flights?

What day of the week experiences the fewest flight delays on this route?

Which airport is the most popular layover for flights between London and Buenos Aires?

Which layover airport offers the lowest fares from London to Buenos Aires?

Which layover airport has the shortest travel time from London to Buenos Aires?

Which layover airport has the shortest connection time from London to Buenos Aires?

How many flights depart from London to Buenos Aires on average per day?

How many flights depart from London to Buenos Aires on average per week?

When to book flights from London to Buenos Aires

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

Fastest flight time

Direct flights

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, organize 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 17.0 mi from Buenos Aires

Cabin classes currently available on flights to Buenos Aires

List of cabin classes available on flights landing in Buenos Aires. Availability may vary depending on flight origin and airline.

Popular cities in Argentina

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from London

According to popular flight searches on momondo this year

Complete your trip to Buenos Aires

Explore popular destinations other users love

According to popular flight searches on momondo this year