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Cheap flights from London Heathrow Airport to Buenos Aires from $710

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 8/25. 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

KAYAK's recommended round-trip deals from the most popular airlines that fly from London Heathrow Airport to Buenos Aires.
10:05 pm - 3:20 pmLHR-EZE
21h 15m1 stop
4:45 pm - 3:35 pmEZE-LHR
18h 50m1 stop
$996Avianca
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Mon, May 5 - Tue, May 20
8:05 pm - 10:30 amLHR-AEP
42h 25m2 stops
12:55 pm - 7:20 pmAEP-LHR
26h 25m2 stops
$1,019SWISS
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Sat, Sep 6 - Mon, Sep 29
10:10 pm - 10:35 amLHR-EZE
16h 25m1 stop
2:20 pm - 9:15 amEZE-LHR
15h 55m1 stop
$1,042Iberia
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Fri, Aug 29 - Sat, Nov 29
5:30 pm - 6:25 amLHR-EZE
16h 55m1 stop
4:40 pm - 7:40 pmEZE-LHR
23h 00m2 stops
$1,091Lufthansa
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Wed, May 7 - Wed, May 28
6:40 pm - 10:45 amLHR-EZE
20h 05m2 stops
4:40 pm - 2:40 pmEZE-LHR
18h 00m1 stop
$1,108
Find Deal
Fri, Sep 5 - Sat, Sep 27
7:25 am - 6:25 amLHR-EZE
27h 00m2 stops
4:40 pm - 5:05 pmEZE-LHR
20h 25m2 stops
$1,113Lufthansa
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Wed, May 7 - Wed, May 28
9:20 pm - 10:30 amLHR-AEP
17h 10m1 stop
6:20 pm - 3:05 pmAEP-LHR
16h 45m1 stop
$1,113LATAM Airlines
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Wed, May 14 - Wed, May 21
9:20 pm - 10:30 amLHR-AEP
17h 10m1 stop
6:20 pm - 3:05 pmAEP-LHR
16h 45m1 stop
$1,126LATAM Airlines
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Thu, May 15 - Thu, May 22
11:20 am - 9:20 amLHR-AEP
26h 00m2 stops
1:40 pm - 5:45 pmAEP-LHR
24h 05m2 stops
$1,131
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Thu, May 15 - Thu, May 22
9:55 pm - 10:35 amLHR-EZE
16h 40mnonstop
1:00 pm - 8:25 amEZE-LHR
15h 25m1 stop
$1,504Iberia
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Wed, May 14 - Wed, May 21

Lufthansa flights from London Heathrow Airport to Buenos Aires

Our best Lufthansa deals on London Heathrow Airport to Buenos Aires flight tickets
Lufthansa
May 7
LHR5:30 pmLondon Heathrow
16h 55m
1 stop
EZE6:25 amBuenos Aires Ministro Pistarini
May 28
EZE4:40 pmBuenos Aires Ministro Pistarini
23h 00m
2 stops
LHR7:40 pmLondon Heathrow
Lufthansa
May 7
LHR7:25 amLondon Heathrow
27h 00m
2 stops
EZE6:25 amBuenos Aires Ministro Pistarini
May 28
EZE4:40 pmBuenos Aires Ministro Pistarini
20h 25m
2 stops
LHR5:05 pmLondon Heathrow
Lufthansa
May 6
LHR8:25 pmLondon Heathrow
38h 00m
2 stops
EZE6:25 amBuenos Aires Ministro Pistarini
May 28
EZE4:40 pmBuenos Aires Ministro Pistarini
20h 25m
2 stops
LHR5:05 pmLondon Heathrow

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
Apr 27
LHR12:15 pmLondon Heathrow
47h 45m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
May 20
EZE9:00 pmBuenos Aires Ministro Pistarini
32h 40m
2 stops
LHR9:40 amLondon Heathrow
United Airlines
Apr 11
LHR1:40 pmLondon Heathrow
22h 20m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Apr 21
EZE9:00 pmBuenos Aires Ministro Pistarini
59h 20m
2 stops
LHR12:20 pmLondon Heathrow
United Airlines
Apr 14
LHR1:40 pmLondon Heathrow
22h 20m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Apr 20
EZE9:00 pmBuenos Aires Ministro Pistarini
56h 40m
2 stops
LHR9:40 amLondon Heathrow

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 May. Flight prices, which tend to average around $1,114, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Buenos Aires from London Heathrow Airport during January instead. Flights to Buenos Aires in January, while not as cheap as those in May, still average around $1,122.

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

On average, the least expensive day to fly to Buenos Aires from London Heathrow Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as $1,211. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Thursday is $1,211.

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 26 weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,302 when searching 26 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 $1,117 on momondo.

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

There are 2 cabin classes 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 March 2025, prices for London Heathrow Airport to Buenos Aires flights are approximately 4% cheaper 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

Best Price Found

$710

Fastest flight time

16h 00m

Direct flights

Tue and Sun

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from London Heathrow Airport in the past 72 hours is $710. The best round-trip flight deal from London Heathrow Airport to Buenos Aires found on momondo in the last 72 hours is $996.
The fastest flight from London Heathrow Airport to Buenos Aires takes 16h 00m
Direct flights go from London Heathrow Airport to Buenos Aires on Tuesday and Sunday. The only airline offering direct flights is Iberia.
There are 2 airports near Buenos Aires: Buenos Aires Ministro Pistarini (EZE), Buenos Aires Jorge Newbery (AEP)

  • 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 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?


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