Cheap flights from London Heathrow Airport to Buenos Aires from £469
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
3 Sep — 10 Sep1
Return
1 adult
Economy
Cheapflights Tip: The best prices from London Heathrow to Buenos Aires are usually found in January or February, booked 61 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday
Cheap flight deals from Heathrow to Buenos Aires
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 August 2025.
Explore the most affordable flight options available from Heathrow to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.
Thu 4/906:30LHR - EZE
2 stops19h 15mKLM
Wed 24/914:25EZE - LHR
1 stop23h 10mKLM
Deal found 27/8£714
Thu 6/1121:40LHR - EZE
1 stop21h 10mAvianca
Sat 15/1116:55EZE - LHR
1 stop18h 40mAvianca
Deal found 28/8£720
Wed 24/922:05LHR - EZE
1 stop21h 15mAvianca
Fri 10/1006:50EZE - LHR
1 stop28h 45mAvianca
Deal found 27/8£721
Mon 10/1121:40LHR - EZE
1 stop21h 10mAvianca
Thu 4/1216:55EZE - LHR
1 stop18h 40mAvianca
Deal found 27/8£722
Tue 11/1121:40LHR - EZE
1 stop21h 10mAvianca
Tue 25/1116:55EZE - LHR
1 stop18h 40mAvianca
Deal found 29/8£722
Mon 22/922:05LHR - EZE
1 stop30h 05mAvianca
Tue 21/1001:40EZE - LHR
1 stop33h 55mAvianca
Deal found 28/8£723
Thu 4/922:05LHR - EZE
1 stop30h 05mAvianca
Tue 23/901:40EZE - LHR
1 stop33h 55mAvianca
Deal found 27/8£724
Sun 31/822:05LHR - EZE
1 stop30h 05mAvianca
Thu 25/901:40EZE - LHR
1 stop33h 55mAvianca
Deal found 28/8£725
Thu 25/922:05LHR - EZE
1 stop35h 40mAvianca
Sun 5/1006:50EZE - LHR
1 stop28h 45mAvianca
Deal found 28/8£725
Thu 18/922:05LHR - EZE
1 stop30h 05mAvianca
Tue 21/1001:40EZE - LHR
1 stop33h 55mAvianca
Deal found 28/8£726
Thu 20/1121:40LHR - EZE
1 stop21h 10mAvianca
Sat 6/1216:55EZE - LHR
1 stop18h 40mAvianca
Deal found 28/8£731
Wed 12/1121:40LHR - AEP
1 stop35h 00mAvianca
Fri 21/1107:00AEP - LHR
1 stop28h 35mAvianca
Deal found 28/8£763
Best flights from Heathrow to Buenos Aires
Discover carefully curated flight deals from Heathrow to Buenos Aires that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2025.
Wed 4/221:40LHR - EZE
1 stop21h 10mAvianca
Sun 22/207:35EZE - LHR
1 stop28h 00mAvianca
Deal found 27/8£720
Tue 11/1121:40LHR - EZE
1 stop21h 10mAvianca
Tue 25/1116:55EZE - LHR
1 stop18h 40mAvianca
Deal found 29/8£722
Mon 15/922:05LHR - EZE
1 stop30h 05mAvianca
Fri 26/906:50EZE - LHR
1 stop28h 45mAvianca
Deal found 29/8£734
Thu 8/121:40LHR - EZE
1 stop21h 10mAvianca
Fri 13/316:55EZE - LHR
1 stop18h 40mAvianca
Deal found 27/8£749
Thu 8/121:40LHR - EZE
1 stop21h 10mAvianca
Sun 15/316:55EZE - LHR
1 stop18h 40mAvianca
Deal found 27/8£749
Thu 8/121:40LHR - EZE
1 stop21h 10mAvianca
Wed 11/316:55EZE - LHR
1 stop18h 40mAvianca
Deal found 27/8£749
Thu 8/121:40LHR - EZE
1 stop21h 10mAvianca
Tue 10/307:35EZE - LHR
1 stop28h 00mAvianca
Deal found 27/8£749
Thu 8/121:40LHR - EZE
1 stop21h 10mAvianca
Mon 16/316:55EZE - LHR
1 stop18h 40mAvianca
Deal found 27/8£749
Thu 8/121:40LHR - EZE
1 stop21h 10mAvianca
Thu 12/316:55EZE - LHR
1 stop18h 40mAvianca
Deal found 27/8£749
Sat 13/922:05LHR - EZE
1 stop30h 05mAvianca
Wed 24/901:40EZE - LHR
1 stop33h 55mAvianca
Deal found 29/8£750
Thu 13/1121:40LHR - EZE
1 stop21h 10mAvianca
Sun 16/1101:40EZE - LHR
1 stop33h 55mAvianca
Deal found 28/8£752
Wed 12/1121:40LHR - AEP
1 stop35h 00mAvianca
Fri 21/1107:00AEP - LHR
1 stop28h 35mAvianca
Deal found 28/8£763
Direct flights from Heathrow to Buenos Aires
Explore direct flight options from Heathrow to Buenos Aires based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 August 2025.
Mon 24/1122:00LHR - EZE
Nonstop16h 45mBritish Airways
Mon 8/1213:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 28/8£1,191
Mon 5/122:00LHR - EZE
Nonstop16h 45mBritish Airways
Mon 26/113:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 27/8£1,213
Thu 25/921:55LHR - EZE
Nonstop16h 40mBritish Airways
Fri 17/1012:15EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 27/8£1,253
Sun 18/122:00LHR - EZE
Nonstop16h 45mBritish Airways
Fri 30/113:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 28/8£1,258
Fri 14/1122:00LHR - EZE
Nonstop16h 45mBritish Airways
Sun 16/1113:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 28/8£1,278
Fri 21/1122:00LHR - EZE
Nonstop16h 45mBritish Airways
Sun 30/1113:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 28/8£1,288
Tue 11/1122:00LHR - EZE
Nonstop16h 45mBritish Airways
Mon 17/1113:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 27/8£1,353
Fri 28/1122:00LHR - EZE
Nonstop16h 45mBritish Airways
Sun 7/1213:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 27/8£1,363
Wed 12/1122:00LHR - EZE
Nonstop16h 45mBritish Airways
Fri 21/1113:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 27/8£1,398
Thu 6/1122:00LHR - EZE
Nonstop16h 45mBritish Airways
Mon 1/1213:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 28/8£1,407
Fri 28/1122:00LHR - EZE
Nonstop16h 45mBritish Airways
Fri 12/1213:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 27/8£1,438
Wed 12/1122:00LHR - EZE
Nonstop16h 45mBritish Airways
Mon 17/1113:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 27/8£1,473
Last-minute flights from Heathrow to Buenos Aires
Discover last-minute flight deals from Heathrow to Buenos Aires. Data last updated 29 August 2025 and is based on user searches.
Sun 31/822:05LHR - EZE
1 stop30h 05mAvianca
Thu 25/901:40EZE - LHR
1 stop33h 55mAvianca
Deal found 28/8£725
Thu 4/906:30LHR - EZE
2 stops19h 15mKLM
Wed 24/914:25EZE - LHR
1 stop23h 10mKLM
Deal found 27/8£714
Thu 4/922:05LHR - EZE
1 stop30h 05mAvianca
Tue 23/901:40EZE - LHR
1 stop33h 55mAvianca
Deal found 27/8£724
Thu 4/906:15LHR - EZE
1 stop19h 30mMultiple Airlines
Sun 28/914:40EZE - LHR
1 stop22h 55mMultiple Airlines
Deal found 27/8£731
Thu 4/922:05LHR - AEP
1 stop35h 35mAvianca
Wed 24/907:00AEP - LHR
1 stop28h 35mAvianca
Deal found 27/8£763
Fri 5/922:05LHR - EZE
1 stop21h 15mAvianca
Tue 23/901:40EZE - LHR
1 stop33h 55mAvianca
Deal found 27/8£734
Wed 17/922:05LHR - EZE
1 stop30h 05mAvianca
Sun 19/1001:40EZE - LHR
1 stop33h 55mAvianca
Deal found 27/8£734
Thu 18/922:05LHR - EZE
1 stop30h 05mAvianca
Tue 21/1001:40EZE - LHR
1 stop33h 55mAvianca
Deal found 28/8£726
Mon 22/922:05LHR - EZE
1 stop30h 05mAvianca
Tue 21/1001:40EZE - LHR
1 stop33h 55mAvianca
Deal found 28/8£723
Wed 24/922:05LHR - EZE
1 stop21h 15mAvianca
Thu 23/1016:45EZE - LHR
1 stop18h 50mAvianca
Deal found 28/8£720
Wed 24/922:05LHR - EZE
1 stop21h 15mAvianca
Fri 10/1006:50EZE - LHR
1 stop28h 45mAvianca
Deal found 27/8£721
Thu 25/922:05LHR - EZE
1 stop35h 40mAvianca
Sun 5/1006:50EZE - LHR
1 stop28h 45mAvianca
Deal found 28/8£725
One-way flights from Heathrow to Buenos Aires
Search for one-way flight options from Heathrow to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated 29 August 2025.
Sat 15/1119:55LHR - AEP
3 stops38h 35mMultiple Airlines
Deal found 27/8£469
Thu 18/907:45LHR - AEP
3 stops27h 55mMultiple Airlines
Deal found 27/8£470
Wed 14/107:35LHR - EZE
2 stops20h 55mMultiple Airlines
Deal found 28/8£471
Fri 12/912:00LHR - AEP
3 stops48h 20mMultiple Airlines
Deal found 28/8£476
Tue 20/113:30LHR - EZE
2 stops46h 50mUnited Airlines
Deal found 28/8£478
Wed 18/206:15LHR - EZE
2 stops22h 15mMultiple Airlines
Deal found 28/8£482
Mon 8/920:50LHR - EZE
3 stops49h 20mMultiple Airlines
Deal found 28/8£483
Fri 12/920:50LHR - EZE
2 stops32h 40mMultiple Airlines
Deal found 28/8£488
Thu 11/920:50LHR - EZE
3 stops49h 20mMultiple Airlines
Deal found 28/8£491
Wed 31/1211:05LHR - EZE
3 stops27h 05mMultiple Airlines
Deal found 28/8£497
Mon 13/1015:05LHR - AEP
2 stops46h 45mMultiple Airlines
Deal found 27/8£503
Sat 17/119:05LHR - EZE
2 stops23h 45mMultiple Airlines
Deal found 27/8£504
Cheapflights Fare Finder
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 29 August 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Buenos Aires that are best for you.
Fly from
Heathrow
Fly to
Buenos Aires
Route
Depart
Return
Price
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Wed 4/2
21:40-15:50
1 stop21h 10m
Buenos Aires Ministro Pistarini
Sun 22/2
07:35-14:35
1 stop28h 00m
£720
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Tue 11/11
21:40-15:50
1 stop21h 10m
Buenos Aires Ministro Pistarini
Tue 25/11
16:55-14:35
1 stop18h 40m
£722
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Mon 15/9
22:05-00:10
1 stop30h 05m
Buenos Aires Ministro Pistarini
Fri 26/9
06:50-15:35
1 stop28h 45m
£734
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Thu 8/1
21:40-15:50
1 stop21h 10m
Buenos Aires Ministro Pistarini
Fri 13/3
16:55-14:35
1 stop18h 40m
£749
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Thu 8/1
21:40-15:50
1 stop21h 10m
Buenos Aires Ministro Pistarini
Sun 15/3
16:55-14:35
1 stop18h 40m
£749
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Thu 8/1
21:40-15:50
1 stop21h 10m
Buenos Aires Ministro Pistarini
Wed 11/3
16:55-14:35
1 stop18h 40m
£749
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Thu 8/1
21:40-15:50
1 stop21h 10m
Buenos Aires Ministro Pistarini
Tue 10/3
07:35-14:35
1 stop28h 00m
£749
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Thu 8/1
21:40-15:50
1 stop21h 10m
Buenos Aires Ministro Pistarini
Mon 16/3
16:55-14:35
1 stop18h 40m
£749
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Thu 8/1
21:40-15:50
1 stop21h 10m
Buenos Aires Ministro Pistarini
Thu 12/3
16:55-14:35
1 stop18h 40m
£749
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Sat 13/9
22:05-00:10
1 stop30h 05m
Buenos Aires Ministro Pistarini
Wed 24/9
01:40-15:35
1 stop33h 55m
£750
Flights are sorted by cheapest return flights first.
Deals found on 27/8
Showing 1-10 of 40 results
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Best time to book a flight from Heathrow to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to Buenos Aires
How far ahead should I book a flight from London Heathrow Airport to Buenos Aires?
Use this chart to determine the optimal time to book a return flight from Heathrow to Buenos Aires. Price data was last updated on 22 August 2025.
Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Buenos Aires. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from London Heathrow Airport to Buenos Aires?
Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Buenos Aires (average of £1,012). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,250). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LHR to BUE?
Find hourly flight availability from Heathrow to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 August 2025.
It’s typically best to fly out from London Heathrow Airport to Buenos Aires in the morning. Doing so could potentially save you 21% on the flight price compared to flying in the evening, which is usually more expensive.
What is the cheapest day to fly from London Heathrow Airport to Buenos Aires?
Use this chart to determine the cheapest time to fly return from Heathrow to Buenos Aires. Price data was last updated on 16 December 2024.
Travellers seeking maximum savings on their London Heathrow Airport to Buenos Aires flight should consider departing on Sunday at midday when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
How much does it cost for a return flight from London Heathrow Airport to Buenos Aires?
What’s the top stopover airport for flights from London Heathrow Airport to Buenos Aires?
Share of one-stop return flights from London Heathrow Airport to Buenos Aires chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Madrid (MAD) – chosen by Cheapflights users on 27% of one-stop itineraries from London Heathrow Airport to Buenos Aires on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to Buenos Aires?
Average return fare for one-stop flights from London Heathrow Airport to Buenos Aires, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Toronto (YYZ) is the most affordable one-stop option, with an average return flight price of £703.
What’s the fastest stopover option from London Heathrow Airport to Buenos Aires?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Buenos Aires, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 16h 06m.
Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Buenos Aires?
Average stopover duration for one-stop one-way flights from London Heathrow Airport to Buenos Aires, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 29m.
Reviews of airlines servicing Buenos Aires
Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated 29 August 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Buenos Aires, such as Finnair, LATAM Airlines, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Related info for your journey
Find useful and relevant information for your journey from Heathrow to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
How long is the flight from London Heathrow Airport to Buenos Aires?
A quick flight from London Heathrow Airport to Buenos Aires can take about 21h 10m. Avianca provides one of the quickest options available for as low as £720. London Heathrow Airport and Buenos Aires are separated by a distance of 6915 mi.
What are the cheapest airlines flying from London Heathrow Airport to Buenos Aires round-trip?
Our cheapest airline available from London Heathrow Airport to Buenos Aires is Air France. Our recent data shows that you can find tickets from as low as £443 on this airline. Additional options worth looking into are Air Canada and Iberia, starting at £640 and £706 round-trip. Air France is 54% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest flights from London Heathrow Airport to Buenos Aires?
Looking at all options, your cheapest flight can be booked for £972. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £708 on average our data indicates £1,925 when flying from London Heathrow Airport to Buenos Aires.
Can I find deals for business class flights from Heathrow to Buenos Aires?
Yes. Cheapflights offers flight deals from Heathrow to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to Buenos Aires?
Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Buenos Aires (average of £1,012). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,250). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to Buenos Aires departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 29 August 2025.
Top 7 airlines flying from Heathrow to Buenos Aires
Discover the top 7 airlines that operate flights from Heathrow to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 August 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Heathrow to Buenos Aires?
When you search for this flight from Heathrow to Buenos Aires, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Heathrow to Buenos Aires?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Buenos Aires.
Can Cheapflights find flights from Heathrow to Buenos Aires with no change fees?
Yes, we can. To see specific flights from Heathrow to Buenos Aires with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Heathrow to Buenos Aires become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Buenos Aires from Heathrow today and book when prices fit your budget.
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