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Cheap flights from London Heathrow Airport to Buenos Aires from $612

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 Heathrow Airport to Buenos Aires departing on 3/3. 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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Find the cheapest flights from London Heathrow Airport to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
4:40 pm - 10:25 pm
LHR
-
EZE
32h 45m2 stops
Turkish Airlines Logo
11:55 pm - 2:10 pm
EZE
-
LHR
35h 15m2 stops
$1,088Turkish Airlines
Sat, Mar 7 - Tue, Mar 24
Turkish Airlines Logo
5:45 pm - 10:25 pm
LHR
-
EZE
31h 40m2 stops
Turkish Airlines Logo
11:55 pm - 2:55 pm
EZE
-
LHR
36h 00m2 stops
$1,103Turkish Airlines
Sat, Mar 7 - Mon, Mar 23
Turkish Airlines Logo
10:35 pm - 10:25 pm
LHR
-
EZE
27h 50m2 stops
Turkish Airlines Logo
11:55 pm - 9:35 am
EZE
-
LHR
29h 40m2 stops
$1,113Turkish Airlines
Mon, Apr 13 - Mon, Apr 27
Lufthansa Logo
1:30 pm - 6:25 am
LHR
-
EZE
20h 55m1 stop
Lufthansa Logo
4:40 pm - 8:40 pm
EZE
-
LHR
24h 00m1 stop
$1,115Lufthansa
Fri, Apr 3 - Sun, Jun 28
United Airlines Logo
10:00 am - 7:20 am
LHR
-
EZE
24h 20m1 stop
United Airlines Logo
11:55 pm - 7:30 am
EZE
-
LHR
28h 35m1 stop
$1,116United Airlines
Sun, Feb 8 - Wed, Feb 25
United Airlines Logo
12:05 pm - 9:20 am
LHR
-
EZE
24h 15m1 stop
United Airlines Logo
10:05 pm - 7:55 am
EZE
-
LHR
30h 50m2 stops
$1,117United Airlines
Wed, Jan 21 - Wed, Jan 28
Avianca Logo
10:05 pm - 12:10 am
LHR
-
EZE
30h 05m1 stop
Avianca Logo
4:45 pm - 3:35 pm
EZE
-
LHR
18h 50m1 stop
$1,119Avianca
Sun, Apr 12 - Thu, Apr 23
SWISS Logo
8:05 pm - 9:40 am
LHR
-
AEP
41h 35m2 stops
SWISS Logo
2:55 pm - 6:30 pm
AEP
-
LHR
23h 35m3 stops
$1,125SWISS
Sat, May 9 - Mon, May 25
SWISS Logo
8:05 pm - 9:40 am
LHR
-
AEP
41h 35m2 stops
SWISS Logo
2:55 pm - 6:30 pm
AEP
-
LHR
23h 35m3 stops
$1,145SWISS
Mon, May 11 - Mon, May 25
Avianca Logo
9:40 pm - 5:40 am
LHR
-
AEP
35h 00m1 stop
Avianca Logo
7:00 am - 2:35 pm
AEP
-
LHR
28h 35m1 stop
$1,150Avianca
Sat, Mar 7 - Tue, Mar 24

Turkish Airlines flights from London Heathrow Airport to Buenos Aires

Our best Turkish Airlines deals on London Heathrow Airport to Buenos Aires flight tickets
Turkish Airlines
Mar 7
LHR4:40 pmLondon Heathrow
32h 45m
2 stops
EZE10:25 pmBuenos Aires Ministro Pistarini
Mar 24
EZE11:55 pmBuenos Aires Ministro Pistarini
35h 15m
2 stops
LHR2:10 pmLondon Heathrow
$1,088
Find similar
Turkish Airlines
Mar 7
LHR5:45 pmLondon Heathrow
31h 40m
2 stops
EZE10:25 pmBuenos Aires Ministro Pistarini
Mar 23
EZE11:55 pmBuenos Aires Ministro Pistarini
36h 00m
2 stops
LHR2:55 pmLondon Heathrow
$1,103
Find similar
Turkish Airlines
Apr 13
LHR10:35 pmLondon Heathrow
27h 50m
2 stops
EZE10:25 pmBuenos Aires Ministro Pistarini
Apr 27
EZE11:55 pmBuenos Aires Ministro Pistarini
29h 40m
2 stops
LHR9:35 amLondon Heathrow
$1,113
Find similar

United Airlines flights from London Heathrow Airport to Buenos Aires

Our best United Airlines deals on London Heathrow Airport to Buenos Aires flight tickets
United Airlines
Feb 8
LHR10:00 amLondon Heathrow
24h 20m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Feb 25
EZE11:55 pmBuenos Aires Ministro Pistarini
28h 35m
1 stop
LHR7:30 amLondon Heathrow
$1,116
Find similar
United Airlines
Jan 21
LHR12:05 pmLondon Heathrow
24h 15m
1 stop
EZE9:20 amBuenos Aires Ministro Pistarini
Jan 28
EZE10:05 pmBuenos Aires Ministro Pistarini
30h 50m
2 stops
LHR7:55 amLondon Heathrow
$1,117
Find similar
United Airlines
Jan 31
LHR1:35 pmLondon Heathrow
46h 45m
2 stops
EZE9:20 amBuenos Aires Ministro Pistarini
Feb 15
EZE11:55 pmBuenos Aires Ministro Pistarini
54h 45m
2 stops
LHR9:40 amLondon Heathrow
$1,183
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 3/7

4:40 pm-10:25 pm

2 stops32h 45m

Buenos Aires Ministro Pistarini

Tue 3/24

11:55 pm-2:10 pm

2 stops35h 15m

$1,088

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 3/7

5:45 pm-10:25 pm

2 stops31h 40m

Buenos Aires Ministro Pistarini

Mon 3/23

11:55 pm-2:55 pm

2 stops36h 00m

$1,103

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 4/13

10:35 pm-10:25 pm

2 stops27h 50m

Buenos Aires Ministro Pistarini

Mon 4/27

11:55 pm-9:35 am

2 stops29h 40m

$1,113

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Fri 4/3

1:30 pm-6:25 am

1 stop20h 55m

Buenos Aires Ministro Pistarini

Sun 6/28

4:40 pm-8:40 pm

1 stop24h 00m

$1,115

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 2/8

10:00 am-7:20 am

1 stop24h 20m

Buenos Aires Ministro Pistarini

Wed 2/25

11:55 pm-7:30 am

1 stop28h 35m

$1,116

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 1/21

12:05 pm-9:20 am

1 stop24h 15m

Buenos Aires Ministro Pistarini

Wed 1/28

10:05 pm-7:55 am

2 stops30h 50m

$1,117

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 4/12

10:05 pm-12:10 am

1 stop30h 05m

Buenos Aires Ministro Pistarini

Thu 4/23

4:45 pm-3:35 pm

1 stop18h 50m

$1,119

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sat 5/9

8:05 pm-9:40 am

2 stops41h 35m

Buenos Aires Jorge Newbery

Mon 5/25

2:55 pm-6:30 pm

3 stops23h 35m

$1,125

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Mon 5/11

8:05 pm-9:40 am

2 stops41h 35m

Buenos Aires Jorge Newbery

Mon 5/25

2:55 pm-6:30 pm

3 stops23h 35m

$1,145

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Sat 3/7

9:40 pm-5:40 am

1 stop35h 00m

Buenos Aires Jorge Newbery

Tue 3/24

7:00 am-2:35 pm

1 stop28h 35m

$1,150

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buenos Aires from

How to get the cheapest flight ticket from London Heathrow Airport 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 cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from London Heathrow Airport is in February. Flight prices, which tend to average around $1,178, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Buenos Aires from London Heathrow Airport during September instead. Flights to Buenos Aires in September, while not as cheap as those in February, still average around $1,192.

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 Heathrow Airport 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 Heathrow to Buenos Aires flight route?

Fly from London Heathrow to Buenos Aires Ministro Pistarini for the best London Heathrow - 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,378 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 Heathrow Airport for as low as $1,156 on momondo.

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

There is only 1 cabin class available to choose from on London Heathrow 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 Heathrow Airport to Buenos Aires flight prices changed over time?

As of December 2025, prices for London Heathrow Airport to Buenos Aires flights are approximately 16% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Buenos Aires

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

Cheap London Heathrow Airport to Buenos Aires (LHR to BUE) flight deals and tips

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

Fastest flight time

16h 25m

Direct flights

None
The fastest flight from London Heathrow Airport to Buenos Aires takes 16h 25m
There are no direct flights from London Heathrow Airport to Buenos Aires. There are no popular flight routes from London Heathrow Airport to Buenos Aires.
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  • How far is London Heathrow to Buenos Aires by plane?

    The distance between London Heathrow and Buenos Aires is about 6898.3 mi. By plane, this route typically takes 16h 25m.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Buenos Aires.

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

    The required travel and health documents for your Buenos Aires trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Buenos Aires. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from London Heathrow Airport to Buenos Aires

Compare and see reviews for airlines that fly from London Heathrow Airport to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $1,021Free CancellationRating
7.0
3,045 reviews
Search Iberia flights

  • Iberia Flights From London Heathrow Airport to Buenos Aires

    Iberia operates around 7 flights from London Heathrow Airport to Buenos Aires every week. The average price of these flights found in the last 72 hours has been $1,191, but momondo users have found Iberia deals from London Heathrow Airport to Buenos Aires from as low as $1,021 round-trip. Iberia has been scored 7.0/10 in 3,045 reviews.

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?

Yes. All flights to Buenos Aires from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential London to Buenos Aires flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for London to Buenos Aires flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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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
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport