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Cheap flights from London to Buenos Aires from $581

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 8/31. 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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Cheap round-trip flights

Air Europa Logo
5:25 pm - 8:50 amLGW-EZE
18h 25m1 stop
Air Europa Logo
1:15 pm - 4:25 pmEZE-LGW
24h 10m1 stop
$1,018Air Europa
Find Deal
Fri, Dec 5 - Thu, Mar 5
Air Europa Logo
10:00 am - 8:50 amLGW-EZE
25h 50m1 stop
Air Europa Logo
1:15 pm - 9:00 amEZE-LGW
16h 45m1 stop
$1,023Air Europa
Find Deal
Sun, Nov 16 - Mon, Feb 16
Lufthansa Logo
10:30 am - 6:25 amLHR-EZE
23h 55m1 stop
Lufthansa Logo
5:45 pm - 4:50 pmEZE-LHR
20h 05m1 stop
$1,123Lufthansa
Find Deal
Wed, Aug 20 - Mon, Nov 10
Lufthansa Logo
7:30 pm - 6:25 amLHR-EZE
38h 55m1 stop
Lufthansa Logo
5:45 pm - 12:50 pmEZE-LHR
16h 05m1 stop
$1,142Lufthansa
Find Deal
Tue, Aug 19 - Sun, Nov 9
British Airways Logo
7:40 pm - 5:55 pmLHR-EZE
25h 15m1 stop
British Airways Logo
7:30 pm - 2:00 pmEZE-LHR
15h 30m1 stop
$1,172British Airways
Find Deal
Mon, Dec 29 - Mon, Jan 19
British Airways Logo
8:00 pm - 4:20 pmLHR-EZE
24h 20m1 stop
British Airways Logo
1:35 pm - 8:35 amEZE-LHR
16h 00m1 stop
$1,189British Airways
Find Deal
Mon, Jul 14 - Fri, Dec 12
American Airlines Logo
1:40 pm - 9:00 amLHR-EZE
23h 20m1 stop
American Airlines Logo
10:00 pm - 6:50 amEZE-LHR
29h 50m1 stop
$1,194American Airlines
Find Deal
Tue, Oct 7 - Sat, Oct 25
American Airlines Logo
12:15 pm - 9:00 amLHR-EZE
24h 45m1 stop
American Airlines Logo
9:15 pm - 9:00 pmEZE-LHR
19h 45m1 stop
$1,195American Airlines
Find Deal
Tue, Oct 7 - Sat, Oct 25
ITA Airways Logo
1:45 pm - 7:30 amLCY-EZE
45h 45m2 stops
ITA Airways Logo
1:50 pm - 10:55 amEZE-LCY
18h 05m1 stop
$1,386ITA Airways
Find Deal
Wed, Aug 20 - Mon, Nov 10
ITA Airways Logo
4:30 pm - 7:30 amLCY-EZE
43h 00m2 stops
ITA Airways Logo
1:50 pm - 11:50 amEZE-LCY
19h 00m2 stops
$1,405ITA Airways
Find Deal
Wed, Aug 20 - Fri, Nov 14

Air Canada flights from London to Buenos Aires

Our best Air Canada deals on London to Buenos Aires flight tickets
Air Canada
Nov 16
LHR8:55 amLondon Heathrow
33h 15m
3 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
Feb 16
EZE4:45 pmBuenos Aires Ministro Pistarini
39h 35m
2 stops
LHR11:20 amLondon Heathrow
Air Canada
Nov 3
LHR7:25 pmLondon Heathrow
46h 45m
3 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
Nov 17
EZE4:45 pmBuenos Aires Ministro Pistarini
39h 35m
2 stops
LHR11:20 amLondon Heathrow
Air Canada
Nov 16
LHR11:10 amLondon Heathrow
31h 00m
2 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
Feb 16
EZE4:45 pmBuenos Aires Ministro Pistarini
36h 45m
2 stops
LHR8:30 amLondon Heathrow

United Airlines flights from London to Buenos Aires

Our best United Airlines deals on London to Buenos Aires flight tickets
United Airlines
Oct 28
LHR12:05 pmLondon Heathrow
23h 15m
1 stop
EZE8:20 amBuenos Aires Ministro Pistarini
Nov 11
EZE11:55 pmBuenos Aires Ministro Pistarini
31h 30m
2 stops
LHR10:25 amLondon Heathrow
United Airlines
Sep 1
LHR10:00 amLondon Heathrow
26h 00m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Sep 22
EZE9:00 pmBuenos Aires Ministro Pistarini
32h 20m
2 stops
LHR9:20 amLondon Heathrow
United Airlines
Oct 13
LHR1:40 pmLondon Heathrow
22h 20m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Oct 27
EZE9:05 pmBuenos Aires Ministro Pistarini
31h 25m
1 stop
LHR7:30 amLondon Heathrow

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?

The cheapest month to fly to Buenos Aires from London is in November. Flight prices, which tend to average around $1,098, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Buenos Aires from London during March instead. Flights to Buenos Aires in March, while not as cheap as those in November, still average around $1,104.

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 $1,334 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 $1,117 on momondo.

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

There are 2 cabin classes 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 July 2025, prices for London to Buenos Aires flights are approximately 17% 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

Best Price Found

$581

Fastest flight time

15h 40m

Direct flights

None

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from London in the past 72 hours is $581. The best round-trip flight deal from London to Buenos Aires found on momondo in the last 72 hours is $1,018.
The fastest flight from London to Buenos Aires takes 15h 40m
There are no direct flights from London to Buenos Aires. Popular non-direct routes for this connection are London Gatwick Airport - Buenos Aires Ministro Pistarini Airport, London Heathrow Airport - Buenos Aires Jorge Newbery Airport and London Heathrow Airport - Buenos Aires Ministro Pistarini Airport.
There are 2 airports near Buenos Aires: Buenos Aires Ministro Pistarini (EZE), Buenos Aires Jorge Newbery (AEP)

  • 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 15h 40m.

  • 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $1,021Free CancellationRating
7.0
2,819 reviews
Search Iberia flights
  • Iberia Flights From London to Buenos Aires

    Across 5 Iberia flights from London to Buenos Aires this week, the average price was $1,299, with the best Iberia deals starting from $1,021 round-trip. 2,819 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.


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1 adult
Tue 7/8
Tue 7/15

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