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Cheap flights from London Heathrow Airport to Buenos Aires from £378

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 19/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London Heathrow Airport to Buenos Aires

Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from London Heathrow Airport to Buenos Aires.
 Logo
19:45 - 12:35LHR-EZE
20h 50m2 stops
 Logo
23:55 - 21:25EZE-LHR
17h 30m1 stop
Tue, 10 Jun - Tue, 24 Jun
 Logo
13:30 - 06:25LHR-EZE
20h 55m1 stop
 Logo
13:30 - 17:50EZE-LHR
24h 20m2 stops
Thu, 8 May - Wed, 11 Jun
Lufthansa Logo
15:30 - 06:25LHR-EZE
18h 55m1 stop
Lufthansa Logo
16:40 - 17:40EZE-LHR
21h 00m1 stop
£830Lufthansa
Find Deal
Thu, 5 Jun - Wed, 18 Jun
LATAM Airlines Logo
21:20 - 12:00LHR-AEP
18h 40m1 stop
LATAM Airlines Logo
14:55 - 15:05AEP-LHR
20h 10m1 stop
£830LATAM Airlines
Find Deal
Sun, 8 Jun - Sun, 15 Jun
LATAM Airlines Logo
21:20 - 12:00LHR-AEP
18h 40m1 stop
LATAM Airlines Logo
14:55 - 15:05AEP-LHR
20h 10m1 stop
£838LATAM Airlines
Find Deal
Sun, 8 Jun - Sun, 15 Jun
British Airways Logo
06:15 - 20:00LHR-EZE
17h 45m1 stop
British Airways Logo
12:15 - 07:55EZE-LHR
15h 40m1 stop
£873British Airways
Find Deal
Mon, 19 May - Wed, 4 Jun
Iberia Logo
20:00 - 20:00LHR-EZE
28h 00m1 stop
Iberia Logo
13:00 - 08:25EZE-LHR
15h 25m1 stop
£888Iberia
Find Deal
Wed, 7 May - Wed, 11 Jun
Lufthansa Logo
13:45 - 06:25LHR-EZE
20h 40m2 stops
Lufthansa Logo
16:40 - 16:40EZE-LHR
20h 00m1 stop
£909Lufthansa
Find Deal
Mon, 19 May - Wed, 4 Jun
British Airways Logo
09:15 - 07:35LHR-EZE
26h 20m1 stop
British Airways Logo
12:15 - 07:55EZE-LHR
15h 40m1 stop
£915British Airways
Find Deal
Tue, 13 May - Thu, 29 May
Iberia Logo
09:15 - 07:35LHR-EZE
26h 20m1 stop
Iberia Logo
12:15 - 07:55EZE-LHR
15h 40mdirect
£1,020Iberia
Find Deal
Thu, 8 May - Wed, 11 Jun

Air France flights from London Heathrow Airport to Buenos Aires

Our best Air France deals on London Heathrow Airport to Buenos Aires flight tickets
Air France
29 May
LHR06:15London Heathrow
19h 40m
1 stop
EZE21:55Buenos Aires Ministro Pistarini
25 Jun
EZE23:55Buenos Aires Ministro Pistarini
28h 05m
1 stop
LHR08:00London Heathrow
Air France
29 May
LHR06:15London Heathrow
19h 40m
1 stop
EZE21:55Buenos Aires Ministro Pistarini
25 Jun
EZE23:55Buenos Aires Ministro Pistarini
28h 05m
1 stop
LHR08:00London Heathrow
Air France
2 May
LHR17:35London Heathrow
32h 20m
1 stop
EZE21:55Buenos Aires Ministro Pistarini
16 May
EZE23:55Buenos Aires Ministro Pistarini
17h 30m
1 stop
LHR21:25London Heathrow

SWISS flights from London Heathrow Airport to Buenos Aires

Our best SWISS deals on London Heathrow Airport to Buenos Aires flight tickets
SWISS
19 May
LHR20:05London Heathrow
42h 40m
2 stops
EZE10:45Buenos Aires Ministro Pistarini
4 Jun
EZE13:30Buenos Aires Ministro Pistarini
19h 30m
2 stops
LHR13:00London Heathrow
SWISS
29 May
LHR20:05London Heathrow
42h 40m
2 stops
EZE10:45Buenos Aires Ministro Pistarini
25 Jun
EZE13:30Buenos Aires Ministro Pistarini
22h 55m
2 stops
LHR16:25London Heathrow
SWISS
29 May
LHR20:05London Heathrow
42h 40m
2 stops
EZE10:45Buenos Aires Ministro Pistarini
25 Jun
EZE13:30Buenos Aires Ministro Pistarini
28h 15m
2 stops
LHR21:45London 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 typical price of a round-trip flight between London Heathrow Airport and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

In general, January is the cheapest month to fly from London Heathrow Airport to Buenos Aires. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £842. If you don’t want to visit Buenos Aires in January, then you should wait until February to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £853.

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

The cheapest day to depart on your flight to Buenos Aires is on a Wednesday when prices can be found for as low as £951. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £1,106.

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 £830. Flights to Buenos Aires are more costly in the evening, with an average ticket price of £1,032. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 21 weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around £975 when searching 21 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 £836 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 April 2025, prices for London Heathrow Airport to Buenos Aires flights are approximately 11% 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 return 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

£378

Fastest flight time

16h 25m

Direct flights

Every day

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from London Heathrow Airport in the past 72 hours is £378. The best return flight deal from London Heathrow Airport to Buenos Aires found on momondo in the last 72 hours is £813.
The fastest flight from London Heathrow Airport to Buenos Aires takes 16h 25m
Direct flights go from London Heathrow Airport to Buenos Aires every day.
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?

    Buenos Aires is 6898.3 mi away from London Heathrow. In terms of flight time, this usually takes a little over 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?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Buenos Aires.

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

    The travel and health documents you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

  • What is the most popular airline 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
Air FrancePriceFrom £450Free CancellationRating
7.4
1,444 reviews
Search Air France flights
Air CanadaPriceFrom £650Free CancellationRating
7.0
9,206 reviews
Search Air Canada flights
LufthansaPriceFrom £696Free CancellationRating
6.7
7,030 reviews
Search Lufthansa flights
IberiaPriceFrom £701Free CancellationRating
7.0
2,686 reviews
Search Iberia flights
FinnairPriceFrom £743Free CancellationRating
7.6
1,272 reviews
Search Finnair flights
British AirwaysPriceFrom £759Free CancellationRating
6.6
6,811 reviews
Search British Airways flights
KLMPriceFrom £843Free CancellationRating
7.8
1,333 reviews
Search KLM flights
LATAM AirlinesPriceFrom £874Free CancellationRating
7.5
1,767 reviews
Search LATAM Airlines flights
  • Iberia Flights From London Heathrow Airport to Buenos Aires

    Iberia flies from London Heathrow Airport to Buenos Aires around 6 times per week, with 2,686 momondo users rating the airline 7.0/10. The cheapest Iberia deal from London Heathrow Airport to Buenos Aires in the last 72 hours was £932 (round-trip), much lower than the average airfare cost of £1,193 for Iberia flights on this route.

  • British Airways Flights From London Heathrow Airport to Buenos Aires

    British Airways is also a popular choice for this route. British Airways flight deals for London Heathrow Airport to Buenos Aires start from as low as £1,009 round-trip, depending on your selected dates, with average British Airways deals seen on momondo around £1,351. British Airways operates 6 flights to Buenos Aires from London Heathrow Airport in an average week. Users have rated it 6.6/10 across 6,815 reviews.


Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Buenos Aires . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Buenos Aires from London with this policy.

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?

Of course. momondo tracks the price of London to Buenos Aires flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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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