Cheap flights from London Heathrow Airport to Buenos Aires from £534
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
3 Nov — 10 Nov1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Buenos Aires are usually found in May or April, booked 56 days in advance, depart on a Wednesday or Sunday and return on a Monday
Cheap flight deals from Heathrow to Buenos Aires
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Cheapest flights from Heathrow to Buenos Aires
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 4 October 2026.
Fri 11/1217:00 -
1 stop20h 35m
Thu 11/223:35 -
1 stop28h 10m
Deal found 29/9£913
Sat 14/1120:15 -
1 stop20h 45m
Sat 21/1121:45 -
1 stop37h 20m
Deal found 30/9£932
Sat 28/1121:35 -
1 stop21h 05m
Wed 3/216:50 -
1 stop18h 45m
Deal found 30/9£932
Fri 13/1121:35 -
1 stop29h 55m
Fri 20/1107:25 -
1 stop28h 10m
Deal found 29/9£933
Sat 14/1106:20 -
2 stops25h 00m
Sat 21/1109:00 -
2 stops29h 00m
Deal found 30/9£935
Sun 4/1022:05 -
1 stop35h 35m
Mon 7/1207:05 -
1 stop28h 30m
Deal found 29/9£935
Sun 4/1022:05 -
1 stop35h 35m
Mon 7/1201:40 -
1 stop33h 55m
Deal found 29/9£935
Mon 19/1022:05 -
1 stop30h 20m
Thu 25/216:50 -
1 stop18h 45m
Deal found 30/9£936
Sun 15/1121:35 -
1 stop35h 05m
Tue 15/1207:05 -
1 stop28h 30m
Deal found 29/9£937
Sun 15/1121:35 -
1 stop21h 05m
Wed 16/1216:50 -
1 stop18h 45m
Deal found 29/9£937
Thu 19/1121:35 -
1 stop35h 05m
Wed 2/1207:05 -
1 stop28h 30m
Deal found 30/9£938
Sun 1/1121:35 -
1 stop35h 30m
Sun 22/1107:25 -
1 stop28h 10m
Deal found 30/9£938
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 4 October 2026.
Fri 13/1106:35 -
2 stops29h 45m
Sun 15/1122:05 -
2 stops28h 50m
Deal found 1/10£960
Tue 10/1106:00 -
3 stops30h 20m
Tue 24/1103:15 -
2 stops30h 25m
Deal found 30/9£1,022
Mon 1/210:10 -
2 stops26h 30m
Sun 28/221:30 -
2 stops31h 15m
Deal found 1/10£1,052
Wed 25/1117:55 -
2 stops31h 30m
Sun 29/1123:55 -
2 stops36h 00m
Deal found 29/9£1,076
Mon 23/1119:30 -
3 stops43h 20m
Sat 28/1102:05 -
2 stops31h 55m
Deal found 30/9£1,083
Fri 15/113:30 -
1 stop21h 25m
Sat 6/214:40 -
2 stops19h 20m
Deal found 2/10£1,349
Wed 14/1015:20 -
2 stops44h 40m
Wed 21/1021:00 -
2 stops28h 55m
Deal found 3/10£1,020
Fri 27/1116:30 -
2 stops32h 55m
Tue 12/123:55 -
2 stops33h 50m
Deal found 2/10£1,118
Sun 28/214:25 -
3 stops24h 35m
Sun 7/312:55 -
2 stops21h 05m
Deal found 30/9£1,243
Wed 2/1217:55 -
2 stops31h 30m
Sun 10/123:55 -
2 stops35h 45m
Deal found 3/10£1,194
Thu 24/1210:00 -
1 stop24h 20m
Wed 27/123:55 -
2 stops27h 00m
Deal found 29/9£1,197
Wed 14/1009:55 -
2 stops27h 50m
Fri 16/1020:10 -
2 stops31h 00m
Deal found 3/10£1,328
Mon 15/220:05 -
2 stops42h 55m
Mon 1/312:55 -
3 stops24h 45m
Deal found 29/9£1,345
Tue 1/1216:10 -
3 stops42h 50m
Tue 29/1223:55 -
2 stops33h 50m
Deal found 3/10£1,345
Sun 22/1118:40 -
2 stops20h 20m
Tue 1/1212:55 -
3 stops24h 45m
Deal found 1/10£1,353
Tue 10/1114:25 -
3 stops24h 35m
Mon 23/1112:55 -
3 stops29h 30m
Deal found 30/9£1,374
Mon 11/121:15 -
1 stop18h 25m
Mon 1/211:45 -
1 stop15h 45m
Deal found 29/9£1,937
Tue 9/218:40 -
2 stops20h 20m
Tue 23/212:55 -
3 stops26h 45m
Deal found 1/10£1,476
Thu 4/318:40 -
2 stops20h 20m
Thu 1/412:55 -
3 stops28h 35m
Deal found 3/10£1,487
Sun 15/1118:40 -
2 stops20h 20m
Mon 7/1212:55 -
3 stops26h 45m
Deal found 29/9£1,488
Sat 28/1118:40 -
2 stops20h 20m
Sat 19/1212:55 -
2 stops21h 05m
Deal found 2/10£1,836
Fri 30/1020:05 -
2 stops42h 55m
Sun 15/1112:55 -
2 stops21h 05m
Deal found 1/10£1,932
Mon 2/1114:25 -
3 stops24h 35m
Mon 9/1112:55 -
3 stops24h 45m
Deal found 2/10£2,023
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 4 October 2026.
Sun 28/319:25 -
Nonstop14h 00m
Thu 8/415:10 -
Nonstop13h 20m
Deal found 30/9£1,000
Thu 1/419:25 -
Nonstop14h 00m
Fri 30/415:10 -
Nonstop13h 20m
Deal found 29/9£1,012
Sun 28/319:25 -
Nonstop14h 00m
Sun 11/415:10 -
Nonstop13h 20m
Deal found 30/9£1,034
Sun 28/319:25 -
Nonstop14h 00m
Sat 10/415:10 -
Nonstop13h 20m
Deal found 29/9£1,040
Sun 28/319:25 -
Nonstop14h 00m
Fri 9/415:10 -
Nonstop13h 20m
Deal found 30/9£1,076
Mon 29/319:25 -
Nonstop14h 00m
Fri 9/415:10 -
Nonstop13h 20m
Deal found 30/9£1,080
Fri 5/322:00 -
Nonstop16h 45m
Tue 13/415:10 -
Nonstop13h 20m
Deal found 3/10£1,126
Mon 1/322:00 -
Nonstop16h 45m
Thu 1/415:10 -
Nonstop13h 20m
Deal found 3/10£1,154
Sat 27/322:00 -
Nonstop15h 45m
Sat 10/415:10 -
Nonstop13h 20m
Deal found 29/9£1,157
Mon 1/322:00 -
Nonstop16h 45m
Wed 28/415:10 -
Nonstop13h 20m
Deal found 30/9£1,159
Last-minute flights from Heathrow to Buenos Aires
Discover last-minute flight deals from Heathrow to Buenos Aires. Data last updated 4 October 2026 and is based on user searches.
Sun 4/1022:05 -
1 stop35h 35m
Mon 7/1207:05 -
1 stop28h 30m
Deal found 29/9£935
Sun 4/1022:05 -
1 stop35h 35m
Mon 7/1201:40 -
1 stop33h 55m
Deal found 29/9£935
Mon 19/1022:05 -
1 stop30h 20m
Thu 25/216:50 -
1 stop18h 45m
Deal found 30/9£936
Sun 1/1121:35 -
1 stop35h 30m
Sun 22/1107:25 -
1 stop28h 10m
Deal found 30/9£938
Fri 13/1121:35 -
1 stop29h 55m
Fri 20/1107:25 -
1 stop28h 10m
Deal found 29/9£933
Sat 14/1120:15 -
1 stop20h 45m
Sat 21/1121:45 -
1 stop37h 20m
Deal found 30/9£932
Sat 14/1106:20 -
2 stops25h 00m
Sat 21/1109:00 -
2 stops29h 00m
Deal found 30/9£935
Sun 15/1121:35 -
1 stop35h 05m
Tue 15/1207:05 -
1 stop28h 30m
Deal found 29/9£937
Sun 15/1121:35 -
1 stop21h 05m
Tue 15/1207:25 -
1 stop28h 10m
Deal found 29/9£937
Thu 19/1121:35 -
1 stop35h 05m
Wed 2/1207:05 -
1 stop28h 30m
Deal found 30/9£938
Thu 19/1112:25 -
2 stops27h 15m
Wed 2/1213:35 -
2 stops24h 55m
Deal found 29/9£938
Sat 28/1121:35 -
1 stop21h 05m
Wed 3/216:50 -
1 stop18h 45m
Deal found 30/9£932
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 4 October 2026.
Tue 17/1118:30 -
2 stops49h 34m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/9£534
Mon 30/1109:55 -
3 stops29h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£535
Sun 15/1119:55 -
3 stops42h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£536
Tue 3/1119:40 -
3 stops48h 24m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/10£537
Tue 29/1209:55 -
3 stops45h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/9£538
Tue 10/1118:30 -
2 stops44h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/9£539
Tue 17/1122:30 -
1 stop26h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/9£539
Mon 30/1110:30 -
1 stop36h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/10£541
Wed 28/1018:30 -
3 stops26h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/10£541
Thu 26/1106:50 -
3 stops36h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/10£542
Sat 31/1009:15 -
3 stops53h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/9£543
Mon 7/1221:35 -
1 stop35h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£544
Find 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 4 October 2026.
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 7,457,451 searches. Data last updated 4 October 2026.
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
Cheapest return flight
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Fri 27/11
06:35-07:20
2 stops27h 45m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£548
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Sat 21/11
16:40-07:20
2 stops41h 40m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£554
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Sun 6/12
12:05-07:20
2 stops46h 15m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£556
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Sat 5/12
13:35-07:20
2 stops44h 45m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£557
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Thu 18/2
12:05-07:20
2 stops46h 15m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£559
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Tue 16/2
07:40-07:20
2 stops26h 40m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£559
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Sun 21/2
11:35-07:20
2 stops46h 45m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£559
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Sat 13/2
16:20-07:20
2 stops66h 00m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£564
LondonBuenos Aires
LHR London Heathrow - AEP Buenos Aires Jorge Newbery
LHRAEP
London Heathrow
Fri 9/10
22:05-05:40
1 stop35h 35m
Buenos Aires Jorge Newbery
Wed 31/12
00:00-04:00
Nonstop0h 00m
£636
LondonBuenos Aires
LHR London Heathrow - AEP Buenos Aires Jorge Newbery
LHRAEP
London Heathrow
Wed 4/11
18:30-01:40
2 stops34h 10m
Buenos Aires Jorge Newbery
Wed 31/12
00:00-04:00
Nonstop0h 00m
£746
Flights are sorted by cheapest return flights first.
Deals found on 2/10
Showing 1-10 of 43 resultsSorted by cheapest first
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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.
LHR-BUE
LHR-AEP
LHR-EZE
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
LHR-BUE
LHR-AEP
LHR-EZE
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 £863). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,324). 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 4 October 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Buenos Aires as you normally would.
Weekly flight availability from London Heathrow Airport to Buenos Aires
Explore weekly flight availability from Heathrow to Buenos Aires. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 4 October 2026.
The most flights from LHR to BUE are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost for a return flight from London Heathrow Airport to Buenos Aires?
Airfare is below average for this route at the moment.
London Heathrow Airport to Buenos Aires flights typically cost between £958 and £1,134 in December.The cheapest return price found within the last 5 days was £913 on American Airlines (11 Dec–11 Feb).
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.
Bogotá (BOG) – chosen by Cheapflights users on 31% 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.
Houston (IAH) is the most affordable one-stop option, with an average return flight price of £792.
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 Madrid (MAD) have the shortest average one-way travel time for one-stop routes: 16h 25m.
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 Frankfurt am Main (FRA) offer the fastest connection on this route, with an average stopover time of 1h 11m.
How far ahead should I book a flight from London Heathrow Airport to Buenos Aires?
Booking 39 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.
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 4 October 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Buenos Aires, such as LATAM Airlines,Iberia, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Very old aircraft and it was very dirty in the seats and floor
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 26h 30m. United Airlines provides one of the quickest options available for as low as £1,052. London Heathrow Airport and Buenos Aires are separated by a distance of 6915 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
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 Avianca. Our recent data shows that you can find tickets from as low as £695 on this airline. Additional options worth looking into are Iberia and LATAM Airlines, starting at £835 and £856 round-trip. Avianca is 33% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from London Heathrow Airport to Buenos Aires one-way?
£414 is the cheapest one-way deal found within the past few days, from Avianca. You may also be able to find cheap deals on LATAM Airlines and Iberia, with prices starting from £540 and £703, respectively.
What are the cheapest flights from London Heathrow Airport to Buenos Aires?
Looking at all options, your cheapest flight can be booked for £906. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £781 on average, our data indicates £1,171 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 £863). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,324). 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 4 October 2026.
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 7,457,451 searches. Data last updated 4 October 2026.
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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