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

United Airlines, LEVEL, and LATAM Airlines are the most popular carriers operating from London to Buenos Aires

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.

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

Thursday 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 travel time from London to Buenos Aires?

Flights connecting via Rio de Janeiro (GIG) have the shortest average one-way travel time: 16h 40m.

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

Flights via Madrid (MAD) offer the lowest average round-trip price of $1,199.

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

As of November 2025, there are 3 flights per day flying from London to Buenos Aires. The most common time of day flights depart is 10:00PM, with 100% of flights taking off in the evening.

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 November 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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

Madrid (MAD) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

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 at night have, in the past, seen delays more frequently in comparison.

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

Rio de Janeiro (GIG) has the shortest average layover time for this route: 1h 35m.

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

Prices for flights from London to Buenos Aires refresh daily.

How many operators does momondo search for flights from London to Buenos Aires?

As of November 2025, there is 1 operator available to choose from for flights from London to Buenos Aires.

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.

$602 Cheap Flights from London to Buenos Aires in 2025/26

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 $1,386 to $2,072. The lowest price recently found on this route was $1,059.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

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.

5:45 pm - 10:25 pmLHR-EZE

55h 40m2 stops

11:55 pm - 2:45 pmEZE-LHR

35h 50m2 stops

$1,059Turkish Airlines

Find Deal

Mon, Mar 2 - Wed, Mar 25

9:40 pm - 5:50 amLHR-EZE

35h 10m1 stop

7:30 am - 2:35 pmEZE-LHR

28h 05m1 stop

$1,068Avianca

Find Deal

Mon, Mar 2 - Fri, Mar 6

10:00 am - 8:50 amLGW-EZE

25h 50m1 stop

1:15 pm - 9:00 amEZE-LGW

16h 45m1 stop

$1,079Air Europa

Find Deal

Thu, Mar 12 - Mon, Mar 16

9:40 pm - 3:50 pmLHR-EZE

21h 10m1 stop

1:40 am - 3:00 pmEZE-LHR

34h 20m2 stops

$1,091Multiple Airlines

Find Deal

Mon, Mar 2 - Tue, Mar 24

10:00 am - 7:40 amLGW-EZE

25h 40m1 stop

12:10 pm - 4:25 pmEZE-LGW

24h 15m1 stop

$1,095Air Europa

Find Deal

Fri, May 1 - Thu, May 14

12:05 pm - 7:20 amLHR-EZE

22h 15m1 stop

10:55 pm - 7:30 amEZE-LHR

29h 35m1 stop

$1,099United Airlines

Find Deal

Sun, Feb 22 - Mon, Mar 9

9:10 am - 9:20 amLHR-EZE

27h 10m2 stops

10:55 pm - 7:30 amEZE-LHR

29h 35m1 stop

$1,100United Airlines

Find Deal

Mon, Jan 26 - Mon, Mar 9

5:30 pm - 7:55 amLHR-EZE

17h 25m1 stop

2:40 pm - 1:00 pmEZE-LHR

19h 20m2 stops

$1,106Multiple Airlines

Find Deal

Mon, Jan 26 - Wed, Mar 11

7:40 pm - 5:55 pmLGW-EZE

25h 15m1 stop

10:45 pm - 7:00 pmEZE-LGW

17h 15m1 stop

$1,117British Airways

Find Deal

Wed, Mar 4 - Wed, Mar 18

11:45 am - 9:10 amLGW-EZE

24h 25m1 stop

2:20 pm - 10:50 amEZE-LGW

17h 30m1 stop

$1,121British Airways

Find Deal

Tue, Jan 27 - Wed, Mar 11

United Airlines flights from London to Buenos Aires

Our best United Airlines deals on London to Buenos Aires flight tickets

United Airlines

Feb 22

LHR12:05 pmLondon Heathrow

22h 15m

1 stop

EZE7:20 amBuenos Aires Ministro Pistarini

Mar 9

EZE10:55 pmBuenos Aires Ministro Pistarini

29h 35m

1 stop

LHR7:30 amLondon Heathrow

$1,099

Find similar

United Airlines

Dec 3

LHR7:40 amLondon Heathrow

26h 40m

2 stops

EZE7:20 amBuenos Aires Ministro Pistarini

Jan 20

EZE11:55 pmBuenos Aires Ministro Pistarini

27h 00m

2 stops

LHR5:55 amLondon Heathrow

$1,100

Find similar

United Airlines

Feb 21

LHR4:40 pmLondon Heathrow

41h 40m

2 stops

EZE7:20 amBuenos Aires Ministro Pistarini

Mar 9

EZE10:55 pmBuenos Aires Ministro Pistarini

32h 20m

1 stop

LHR10:15 amLondon Heathrow

$1,163

Find similar

Delta flights from London to Buenos Aires

Our best Delta deals on London to Buenos Aires flight tickets

Delta

Dec 9

LHR4:35 pmLondon Heathrow

20h 40m

1 stop

EZE10:15 amBuenos Aires Ministro Pistarini

Jan 30

EZE10:25 pmBuenos Aires Ministro Pistarini

30h 40m

1 stop

LHR8:05 amLondon Heathrow

$1,205

Find similar

Delta

Dec 6

LHR12:30 pmLondon Heathrow

23h 30m

1 stop

EZE9:00 amBuenos Aires Ministro Pistarini

Jan 15

EZE8:55 pmBuenos Aires Ministro Pistarini

30h 30m

1 stop

LHR6:25 amLondon Heathrow

$1,206

Find similar

Delta

Dec 10

LHR4:10 pmLondon Heathrow

42h 10m

2 stops

EZE7:20 amBuenos Aires Ministro Pistarini

Jan 30

EZE10:25 pmBuenos Aires Ministro Pistarini

29h 25m

2 stops

LHR6:50 amLondon Heathrow

$1,208

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 3/2

5:45 pm-10:25 pm

2 stops55h 40m

Buenos Aires Ministro Pistarini

Wed 3/25

11:55 pm-2:45 pm

2 stops35h 50m

$1,059

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 3/2

9:40 pm-5:50 am

1 stop35h 10m

Buenos Aires Ministro Pistarini

Fri 3/6

7:30 am-2:35 pm

1 stop28h 05m

$1,068

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Thu 3/12

10:00 am-8:50 am

1 stop25h 50m

Buenos Aires Ministro Pistarini

Mon 3/16

1:15 pm-9:00 am

1 stop16h 45m

$1,079

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 3/2

9:40 pm-3:50 pm

1 stop21h 10m

Buenos Aires Ministro Pistarini

Tue 3/24

1:40 am-3:00 pm

2 stops34h 20m

$1,091

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Fri 5/1

10:00 am-7:40 am

1 stop25h 40m

Buenos Aires Ministro Pistarini

Thu 5/14

12:10 pm-4:25 pm

1 stop24h 15m

$1,095

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 2/22

12:05 pm-7:20 am

1 stop22h 15m

Buenos Aires Ministro Pistarini

Mon 3/9

10:55 pm-7:30 am

1 stop29h 35m

$1,099

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 1/26

9:10 am-9:20 am

2 stops27h 10m

Buenos Aires Ministro Pistarini

Mon 3/9

10:55 pm-7:30 am

1 stop29h 35m

$1,100

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 1/26

5:30 pm-7:55 am

1 stop17h 25m

Buenos Aires Ministro Pistarini

Wed 3/11

2:40 pm-1:00 pm

2 stops19h 20m

$1,106

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Wed 3/4

7:40 pm-5:55 pm

1 stop25h 15m

Buenos Aires Ministro Pistarini

Wed 3/18

10:45 pm-7:00 pm

1 stop17h 15m

$1,117

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Tue 1/27

11:45 am-9:10 am

1 stop24h 25m

Buenos Aires Ministro Pistarini

Wed 3/11

2:20 pm-10:50 am

1 stop17h 30m

$1,121

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 September. Flight prices, which tend to average around $1,135, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Buenos Aires from London during March instead. Flights to Buenos Aires in March, while not as cheap as those in September, still average around $1,176.

What is the cheapest time of day to depart on your flight to Buenos Aires?

Our most recent data shows that the best time of day to fly to Buenos Aires is in the afternoon. Flights from London to Buenos Aires during this time can be as low as $1,156. Try not to purchase tickets at noon because they tend to be around $1,377. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London to Buenos Aires flight route?

Fly from London Heathrow to Buenos Aires Ministro Pistarini for the best London - Buenos Aires flight prices

How far in advance should I book a flight 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 $1,371 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 $1,156 on momondo.

What cabin class options are available on London to Buenos Aires flights?

There is only 1 cabin class available to choose from on London to Buenos Aires flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of November 2025, prices for London to Buenos Aires flights are approximately 7% 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 00m
Direct flights	None

The fastest flight from London to Buenos Aires takes 16h 00m

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

Search flight deals

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 00m.
When did momondo last update prices for flights from London to Buenos Aires?
Prices for flights from London to Buenos Aires refresh daily.
How many operators does momondo search for flights from London to Buenos Aires?
As of November 2025, there is 1 operator available to choose from for flights from London to Buenos Aires.
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 62.96% of the total bookings. Other popular models include Airbus A350-1000 with 37.04%.
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 (47% of total bookings). The next most popular airlines are American Airlines (20%), Air Europa (20%), and Lufthansa (12%).

Best airlines flying from London to Buenos Aires

Compare and see reviews for airlines that fly from London to Buenos Aires with momondo

Airline	Rating	Free Cancellation	Price
Iberia	PriceFrom $1,021	Free Cancellation	Rating 7.0 3,036 reviews		Search Iberia flights

Iberia Flights From London to Buenos Aires
Across 7 Iberia flights from London to Buenos Aires this week, the average price was $1,191, with the best Iberia deals starting from $1,021 round-trip. 3,034 users have rated Iberia on momondo, with an average score of 7.0/10.

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 12/26

Fri 1/2

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

Fly into one of these airports located in Buenos Aires

Buenos Aires Jorge Newbery Airport

Buenos Aires Ministro Pistarini Airport

Popular cities in Argentina

Flights to Cordobafrom $641

Flights to Mendozafrom $562

Flights to Puerto Iguazúfrom $987

Flights to Ushuaiafrom $900

Flights to El Calafatefrom $1,086

Flights to San Carlos de Barilochefrom $577

Flights to Saltafrom $840

Flights to San Miguel de Tucumánfrom $864

Flights to Rosariofrom $798

Flights to Jujuyfrom $2,732

Flights to Puerto Madryn

Flights to Mar del Platafrom $1,131

Cheap flights from London to Buenos Aires from $602

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 1/21. 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

United Airlines flights from London to Buenos Aires

Our best United Airlines deals on London to Buenos Aires flight tickets

Delta flights from London to Buenos Aires

Our best Delta 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

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

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?

What is the cheapest time of day to depart on your flight to Buenos Aires?

What is the cheapest London to Buenos Aires flight route?

Fly from London Heathrow to Buenos Aires Ministro Pistarini for the best London - Buenos Aires flight prices

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

What cabin class options are available on London to Buenos Aires flights?

There is only 1 cabin class available to choose from on London to Buenos Aires flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of November 2025, prices for London to Buenos Aires flights are approximately 7% cheaper when compared to flights at the same time last year.

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

United Airlines, LEVEL, and LATAM Airlines are the most popular carriers operating from London to Buenos Aires

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.

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 at night have, in the past, seen delays more frequently in comparison.

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

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

Madrid (MAD) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

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

Flights via Madrid (MAD) offer the lowest average round-trip price of $1,199.

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

Flights connecting via Rio de Janeiro (GIG) have the shortest average one-way travel time: 16h 40m.

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

Rio de Janeiro (GIG) has the shortest average layover time for this route: 1h 35m.

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

As of November 2025, there are 3 flights per day flying from London to Buenos Aires. The most common time of day flights depart is 10:00PM, with 100% of flights taking off in the evening.

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 November 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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

How far is London to Buenos Aires by plane?

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

How many operators does momondo search for flights from London to Buenos Aires?

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

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

What is the most popular plane model from London to Buenos Aires?

What is the most popular airline from London to Buenos Aires?

Best airlines flying from London to Buenos Aires

Compare and see reviews for airlines that fly from London to Buenos Aires with momondo

Iberia Flights From London to Buenos Aires

Why use momondo?

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

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

How can momondo help me find flights 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?

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