Cheap flights from London Heathrow Airport to Buenos Aires from £448
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
7 Oct — 14 Oct1
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 82 days in advance, depart on a Wednesday or Monday 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 7 September 2026.
Thu 3/1215:30 -
2 stops31h 25m
Tue 8/1222:20 -
2 stops21h 00m
Deal found 3/9£856
Fri 27/1113:50 -
2 stops22h 00m
Fri 11/1222:20 -
2 stops21h 00m
Deal found 2/9£857
Mon 16/1120:15 -
1 stop20h 45m
Tue 8/1221:45 -
1 stop37h 20m
Deal found 4/9£861
Wed 18/1120:15 -
1 stop18h 45m
Wed 25/1112:55 -
2 stops23h 25m
Deal found 5/9£862
Thu 10/906:15 -
1 stop19h 35m
Wed 23/915:05 -
1 stop15h 40m
Deal found 7/9£862
Mon 14/920:55 -
2 stops25h 55m
Thu 24/921:10 -
1 stop15h 25m
Deal found 2/9£863
Mon 21/921:20 -
1 stop20h 40m
Sun 4/1012:55 -
1 stop22h 10m
Deal found 4/9£864
Sun 15/1118:00 -
1 stop24h 05m
Wed 25/1116:45 -
1 stop39h 35m
Deal found 4/9£864
Sun 29/1115:00 -
2 stops27h 05m
Mon 1/216:45 -
2 stops34h 45m
Deal found 3/9£865
Mon 7/920:55 -
2 stops25h 55m
Wed 7/1015:05 -
1 stop15h 40m
Deal found 5/9£865
Sat 14/1113:00 -
2 stops38h 30m
Mon 30/1116:45 -
2 stops34h 45m
Deal found 3/9£867
Thu 26/1117:25 -
1 stop27h 00m
Mon 14/1222:15 -
1 stop15h 20m
Deal found 6/9£868
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 7 September 2026.
Wed 25/1110:30 -
1 stop25h 20m
Sun 29/1113:55 -
1 stop22h 45m
Deal found 6/9£902
Mon 16/1118:30 -
2 stops34h 10m
Tue 8/1209:00 -
2 stops34h 40m
Deal found 7/9£919
Mon 28/915:15 -
1 stop22h 30m
Mon 5/1020:10 -
1 stop30h 15m
Deal found 6/9£937
Mon 1/307:40 -
2 stops26h 40m
Sun 7/323:55 -
1 stop28h 45m
Deal found 4/9£965
Wed 25/1122:40 -
2 stops26h 45m
Sun 29/1123:55 -
2 stops36h 00m
Deal found 6/9£1,076
Wed 18/1118:40 -
2 stops20h 20m
Sun 6/1212:55 -
3 stops24h 45m
Deal found 6/9£1,161
Sun 10/108:55 -
1 stop25h 40m
Wed 3/221:30 -
1 stop29h 55m
Deal found 3/9£942
Sat 19/916:40 -
2 stops43h 20m
Fri 25/921:00 -
2 stops28h 55m
Deal found 6/9£966
Wed 24/218:30 -
2 stops34h 10m
Sat 6/303:15 -
2 stops39h 20m
Deal found 4/9£978
Wed 27/111:45 -
2 stops26h 10m
Wed 24/223:35 -
2 stops29h 10m
Deal found 2/9£948
Mon 9/1118:30 -
3 stops41h 50m
Mon 30/1113:35 -
2 stops24h 55m
Deal found 7/9£991
Sat 19/918:00 -
2 stops42h 00m
Sat 26/921:00 -
1 stop30h 45m
Deal found 4/9£1,019
Tue 22/915:15 -
1 stop22h 30m
Thu 1/1020:10 -
2 stops30h 35m
Deal found 3/9£985
Fri 12/206:00 -
2 stops33h 40m
Sat 27/203:15 -
2 stops39h 20m
Deal found 3/9£1,014
Mon 1/308:15 -
2 stops28h 05m
Thu 11/313:35 -
2 stops26h 20m
Deal found 4/9£1,021
Sat 9/110:10 -
1 stop27h 45m
Sat 30/123:35 -
2 stops28h 15m
Deal found 2/9£1,045
Mon 1/308:15 -
2 stops28h 05m
Sat 6/303:15 -
2 stops35h 15m
Deal found 4/9£1,021
Wed 21/1018:40 -
2 stops19h 50m
Wed 28/1012:55 -
3 stops26h 45m
Deal found 6/9£1,498
Wed 30/915:15 -
1 stop22h 30m
Mon 5/1020:10 -
1 stop30h 15m
Deal found 3/9£1,045
Wed 14/1015:15 -
1 stop22h 30m
Fri 16/1020:10 -
1 stop30h 15m
Deal found 3/9£1,047
Thu 28/106:00 -
3 stops30h 20m
Wed 17/213:35 -
2 stops24h 55m
Deal found 3/9£1,246
Thu 15/1008:00 -
3 stops29h 20m
Thu 29/1003:15 -
2 stops35h 15m
Deal found 6/9£1,382
Thu 29/1006:00 -
3 stops30h 20m
Thu 7/118:15 -
2 stops24h 20m
Deal found 6/9£1,561
Mon 26/1018:30 -
3 stops41h 50m
Tue 5/103:15 -
2 stops35h 15m
Deal found 5/9£1,650
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 7 September 2026.
Wed 18/1122:00 -
Nonstop16h 45m
Wed 25/1113:35 -
Nonstop15h 45m
Deal found 5/9£1,096
Sat 27/222:00 -
Nonstop16h 45m
Fri 4/612:25 -
Nonstop15h 45m
Deal found 6/9£1,132
Thu 26/1122:00 -
Nonstop16h 45m
Sun 29/1113:35 -
Nonstop15h 45m
Deal found 6/9£1,144
Thu 19/1122:00 -
Nonstop16h 45m
Thu 26/1113:35 -
Nonstop15h 45m
Deal found 6/9£1,161
Tue 16/222:00 -
Nonstop16h 45m
Thu 25/213:35 -
Nonstop15h 45m
Deal found 2/9£1,183
Sun 14/222:00 -
Nonstop16h 45m
Sat 6/313:35 -
Nonstop15h 45m
Deal found 2/9£1,189
Fri 5/322:00 -
Nonstop16h 45m
Fri 19/313:35 -
Nonstop15h 45m
Deal found 5/9£1,209
Mon 5/1021:45 -
Nonstop17h 00m
Wed 14/1012:25 -
Nonstop15h 45m
Deal found 6/9£1,209
Wed 24/222:00 -
Nonstop16h 45m
Mon 8/313:35 -
Nonstop15h 45m
Deal found 6/9£1,218
Tue 24/1122:00 -
Nonstop16h 45m
Tue 23/213:35 -
Nonstop15h 45m
Deal found 5/9£1,222
Tue 6/1021:45 -
Nonstop17h 00m
Tue 13/1012:25 -
Nonstop15h 45m
Deal found 6/9£1,223
Wed 25/1122:00 -
Nonstop16h 45m
Sat 6/213:35 -
Nonstop15h 45m
Deal found 2/9£1,224
Last-minute flights from Heathrow to Buenos Aires
Discover last-minute flight deals from Heathrow to Buenos Aires. Data last updated 7 September 2026 and is based on user searches.
Mon 7/920:55 -
2 stops25h 55m
Wed 7/1015:05 -
1 stop15h 40m
Deal found 5/9£865
Mon 7/906:15 -
1 stop17h 45m
Tue 22/911:50 -
1 stop17h 20m
Deal found 3/9£882
Thu 10/906:15 -
1 stop19h 35m
Wed 23/915:05 -
1 stop15h 40m
Deal found 7/9£862
Thu 10/906:30 -
2 stops19h 20m
Wed 23/915:05 -
1 stop22h 30m
Deal found 3/9£885
Mon 14/920:55 -
2 stops25h 55m
Thu 24/921:10 -
1 stop15h 25m
Deal found 2/9£863
Mon 14/919:15 -
2 stops27h 35m
Thu 24/921:10 -
2 stops18h 15m
Deal found 2/9£871
Mon 21/921:20 -
1 stop20h 40m
Sun 4/1012:55 -
1 stop22h 10m
Deal found 4/9£864
Mon 21/921:20 -
2 stops25h 01m
Sat 3/1002:15 -
1 stop32h 50m
Deal found 4/9£883
Mon 21/921:20 -
1 stop16h 20m
Tue 6/1018:20 -
1 stop16h 45m
Deal found 3/9£888
Wed 23/920:00 -
1 stop24h 05m
Mon 12/1012:25 -
1 stop15h 45m
Deal found 7/9£872
Tue 29/918:45 -
2 stops25h 00m
Tue 20/1002:15 -
1 stop32h 50m
Deal found 6/9£869
Tue 27/1008:15 -
2 stops36h 05m
Tue 24/1118:20 -
2 stops20h 10m
Deal found 3/9£898
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 7 September 2026.
Tue 15/920:00 -
3 stops57h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/9£448
Mon 21/920:00 -
2 stops47h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/9£455
Tue 29/909:15 -
2 stops39h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/9£465
Tue 15/920:00 -
3 stops49h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/9£467
Tue 29/915:10 -
3 stops53h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/9£485
Mon 28/921:10 -
3 stops51h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/9£485
Wed 25/1120:50 -
2 stops39h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/9£492
Tue 17/1122:30 -
1 stop26h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/9£494
Sat 19/911:45 -
3 stops48h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/9£507
Sat 21/1116:15 -
3 stops36h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/9£511
Thu 4/315:30 -
3 stops25h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/9£513
Tue 24/1112:15 -
3 stops46h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/9£521
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 7 September 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 7 September 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
10:30-08:50
1 stop25h 20m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£541
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Mon 23/11
06:35-07:20
2 stops27h 45m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£546
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Mon 1/3
06:35-09:20
2 stops29h 45m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£547
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Wed 3/3
10:25-09:20
2 stops25h 55m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£555
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Mon 14/9
08:00-08:00
2 stops52h 00m
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
Fri 27/11
10:00-07:20
1 stop24h 20m
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
Tue 26/1
07:40-07:20
2 stops26h 40m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£583
LondonBuenos Aires
LHR London Heathrow - EZE Buenos Aires Ministro Pistarini
LHREZE
London Heathrow
Tue 13/10
13:40-08:00
1 stop22h 20m
Buenos Aires Ministro Pistarini
Wed 31/12
00:00-04:00
Nonstop0h 00m
£583
LondonBuenos Aires
LHR London Heathrow - AEP Buenos Aires Jorge Newbery
LHRAEP
London Heathrow
Sun 20/9
19:50-17:20
2 stops49h 30m
Buenos Aires Jorge Newbery
Wed 31/12
00:00-04:00
Nonstop0h 00m
£749
Fastest return journey
LondonBuenos Aires
LHR London Heathrow - AEP Buenos Aires Jorge Newbery
LHRAEP
London Heathrow
Wed 23/9
18:45-10:30
2 stops19h 45m
Buenos Aires Jorge Newbery
Wed 31/12
00:00-04:00
Nonstop0h 00m
£754
Flights are sorted by cheapest return flights first.
Deals found on 6/9
Showing 1-10 of 39 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-EZE
LHR-AEP
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-EZE
LHR-AEP
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 £845). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,359). 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 7 September 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 7 September 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 typical for this route at the moment.
London Heathrow Airport to Buenos Aires flights typically cost between £774 and £1,119 in December.The cheapest return price found within the last 5 days was £856 on Lufthansa (3 Dec–8 Dec).
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 34% 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.
Bogotá (BOG) is the most affordable one-stop option, with an average return flight price of £771.
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 7 September 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 20h 45m. LATAM Airlines provides one of the quickest options available for as low as £861. London Heathrow Airport and Buenos Aires are separated by a distance of 6896 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 £688 on this airline. Additional options worth looking into are Iberia and LATAM Airlines, starting at £780 and £839 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?
£406 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 £545 and £689, respectively.
What are the cheapest flights from London Heathrow Airport to Buenos Aires?
Looking at all options, your cheapest flight can be booked for £973. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £674 on average, our data indicates £1,147 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 £845). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,359). 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 7 September 2026.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 7 September 2026.
Top 6 airlines flying from Heathrow to Buenos Aires
Discover the top 6 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 7 September 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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