Cheap flights from London Heathrow Airport to Buenos Aires from £453
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 19/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
1 Feb — 8 Feb1
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 February or September, booked 90 days in advance, depart on a Monday or Thursday and return on a Monday
Cheap flight deals from Heathrow to Buenos Aires
Enter your travel dates to find the best prices.
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 2 January 2026.
Wed 31/1216:10LHR - EZE
1 stop21h 05mDelta
Fri 17/420:10EZE - LHR
2 stops31h 00mDelta
Deal found 31/12£920
Wed 31/1220:15LHR - AEP
1 stop20h 45mLATAM Airlines
Fri 17/414:55AEP - LHR
1 stop20h 10mLATAM Airlines
Deal found 31/12£1,230
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 2 January 2026.
Thu 22/115:30LHR - EZE
1 stop19h 25mLufthansa
Wed 11/217:45EZE - LHR
1 stop20h 05mLufthansa
Deal found 31/12£834
Fri 23/109:10LHR - EZE
2 stops25h 10mUnited Airlines
Tue 10/223:55EZE - LHR
2 stops27h 25mUnited Airlines
Deal found 31/12£837
Wed 8/422:05LHR - EZE
1 stop21h 15mAvianca
Tue 14/416:45EZE - LHR
1 stop18h 50mAvianca
Deal found 1/1£839
Tue 30/622:35LHR - EZE
2 stops27h 50mTurkish Airlines
Sun 2/823:55EZE - LHR
2 stops35h 15mTurkish Airlines
Deal found 31/12£839
Sun 15/322:00LHR - EZE
1 stop16h 45mBritish Airways
Sun 29/312:25EZE - LHR
1 stop15h 45mBritish Airways
Deal found 31/12£850
Mon 2/320:05LHR - EZE
2 stops42h 45mSWISS
Wed 11/314:40EZE - LHR
3 stops27h 45mSWISS
Deal found 1/1£860
Thu 2/411:30LHR - EZE
2 stops25h 20mAmerican Airlines
Sat 11/420:25EZE - LHR
1 stop34h 40mAmerican Airlines
Deal found 1/1£870
Tue 17/320:15LHR - AEP
3 stops26h 30mLATAM Airlines
Wed 8/410:00AEP - LHR
2 stops25h 05mLATAM Airlines
Deal found 31/12£917
Wed 4/207:25LHR - EZE
2 stops28h 55mUnited Airlines
Mon 2/322:05EZE - LHR
2 stops56h 35mUnited Airlines
Deal found 31/12£837
Sat 11/421:45LHR - EZE
1 stop17h 00mBritish Airways
Tue 12/512:25EZE - LHR
1 stop15h 45mBritish Airways
Deal found 31/12£868
Sun 12/422:05LHR - AEP
1 stop35h 35mAvianca
Wed 15/407:00AEP - LHR
1 stop28h 35mAvianca
Deal found 1/1£873
Tue 31/318:05LHR - EZE
1 stop20h 50mAmerican Airlines
Fri 17/421:10EZE - LHR
1 stop30h 15mAmerican Airlines
Deal found 1/1£873
Tue 12/518:40LHR - AEP
2 stops19h 00mSWISS
Tue 26/514:55AEP - LHR
3 stops26h 35mSWISS
Deal found 1/1£908
Thu 22/107:00LHR - AEP
2 stops29h 40mLATAM Airlines
Wed 4/210:35AEP - LHR
1 stop24h 30mLATAM Airlines
Deal found 1/1£925
Wed 8/422:05LHR - AEP
1 stop35h 35mAvianca
Wed 15/407:00AEP - LHR
1 stop28h 35mAvianca
Deal found 1/1£873
Tue 30/620:00LHR - EZE
1 stop24h 05mBritish Airways
Thu 30/713:00EZE - LHR
1 stop25h 55mBritish Airways
Deal found 31/12£879
Sun 12/422:05LHR - AEP
1 stop35h 35mAvianca
Sat 18/407:00AEP - LHR
1 stop28h 35mAvianca
Deal found 1/1£935
Wed 8/422:05LHR - AEP
1 stop35h 35mAvianca
Sat 18/407:00AEP - LHR
1 stop28h 35mAvianca
Deal found 1/1£935
Sun 12/422:05LHR - AEP
1 stop35h 35mAvianca
Fri 17/407:00AEP - LHR
1 stop28h 35mAvianca
Deal found 1/1£935
Wed 8/422:05LHR - AEP
1 stop35h 35mAvianca
Fri 17/407:00AEP - LHR
1 stop28h 35mAvianca
Deal found 1/1£935
Thu 9/422:05LHR - AEP
1 stop35h 35mAvianca
Thu 16/407:00AEP - LHR
1 stop28h 35mAvianca
Deal found 1/1£935
Fri 10/422:05LHR - AEP
1 stop35h 35mAvianca
Tue 14/407:00AEP - LHR
1 stop28h 35mAvianca
Deal found 1/1£935
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 2 January 2026.
Tue 10/322:00LHR - EZE
Nonstop16h 45mBritish Airways
Tue 31/312:25EZE - LHR
Nonstop15h 45mBritish Airways
Deal found 31/12£984
Fri 10/421:45LHR - EZE
Nonstop17h 00mBritish Airways
Thu 16/412:25EZE - LHR
Nonstop15h 45mBritish Airways
Deal found 31/12£1,056
Fri 24/421:45LHR - EZE
Nonstop17h 00mBritish Airways
Sat 9/512:25EZE - LHR
Nonstop15h 45mBritish Airways
Deal found 1/1£1,098
Wed 18/222:00LHR - EZE
Nonstop16h 45mBritish Airways
Mon 30/312:25EZE - LHR
Nonstop15h 45mBritish Airways
Deal found 31/12£1,139
Wed 18/222:00LHR - EZE
Nonstop16h 45mBritish Airways
Wed 25/313:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 31/12£1,141
Mon 30/321:45LHR - EZE
Nonstop17h 00mBritish Airways
Wed 8/412:25EZE - LHR
Nonstop15h 45mBritish Airways
Deal found 1/1£1,175
Thu 22/122:00LHR - EZE
Nonstop16h 45mBritish Airways
Wed 4/213:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 1/1£1,194
Last-minute flights from Heathrow to Buenos Aires
Discover last-minute flight deals from Heathrow to Buenos Aires. Data last updated 2 January 2026 and is based on user searches.
Mon 19/118:30LHR - EZE
1 stop16h 25mLufthansa
Wed 28/117:45EZE - LHR
1 stop16h 05mLufthansa
Deal found 1/1£866
Wed 21/116:30LHR - EZE
1 stop18h 25mLufthansa
Tue 10/217:45EZE - LHR
1 stop24h 05mLufthansa
Deal found 31/12£853
Thu 22/109:00LHR - EZE
3 stops33h 10mAir Canada
Wed 4/216:45EZE - LHR
3 stops48h 50mAir Canada
Deal found 31/12£819
Thu 22/115:30LHR - EZE
1 stop19h 25mLufthansa
Wed 11/217:45EZE - LHR
1 stop20h 05mLufthansa
Deal found 31/12£834
Thu 22/120:15LHR - AEP
1 stop16h 25mLATAM Airlines
Tue 10/214:55AEP - LHR
1 stop20h 10mLATAM Airlines
Deal found 31/12£844
Thu 22/119:40LHR - EZE
1 stop24h 45mMultiple Airlines
Sun 22/307:10EZE - LHR
1 stop20h 35mMultiple Airlines
Deal found 31/12£852
Thu 22/120:15LHR - AEP
1 stop16h 25mLATAM Airlines
Sun 22/318:20AEP - LHR
1 stop16h 45mLATAM Airlines
Deal found 31/12£860
Thu 22/120:15LHR - AEP
1 stop16h 25mLATAM Airlines
Thu 5/214:55AEP - LHR
1 stop20h 10mLATAM Airlines
Deal found 31/12£867
Fri 23/112:05LHR - EZE
1 stop22h 15mUnited Airlines
Tue 10/223:55EZE - LHR
1 stop31h 20mUnited Airlines
Deal found 31/12£837
Sat 24/118:30LHR - EZE
1 stop16h 25mLufthansa
Sat 31/117:45EZE - LHR
1 stop16h 05mLufthansa
Deal found 31/12£867
Wed 28/106:30LHR - EZE
2 stops29h 50mUnited Airlines
Wed 4/222:05EZE - LHR
1 stop30h 25mUnited Airlines
Deal found 31/12£844
Thu 29/106:20LHR - EZE
1 stop17h 00mAir France
Thu 5/222:40EZE - LHR
1 stop36h 05mAir France
Deal found 1/1£854
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 2 January 2026.
Mon 19/118:50LHR - EZE
3 stops59h 15mMultiple Airlines
Deal found 31/12£453
Sat 24/119:05LHR - EZE
2 stops51h 50mMultiple Airlines
Deal found 1/1£453
Mon 30/319:10LHR - AEP
3 stops26h 30mMultiple Airlines
Deal found 31/12£455
Fri 30/115:30LHR - AEP
3 stops45h 30mMultiple Airlines
Deal found 31/12£456
Sat 17/119:05LHR - EZE
3 stops45h 50mMultiple Airlines
Deal found 31/12£456
Mon 16/320:50LHR - AEP
2 stops32h 30mMultiple Airlines
Deal found 31/12£459
Thu 22/116:20LHR - EZE
2 stops42h 00mUnited Airlines
Deal found 1/1£459
Wed 21/110:00LHR - EZE
1 stop24h 20mUnited Airlines
Deal found 31/12£459
Wed 21/120:50LHR - AEP
3 stops40h 10mMultiple Airlines
Deal found 31/12£467
Fri 30/115:45LHR - EZE
3 stops53h 58mMultiple Airlines
Deal found 31/12£467
Tue 20/119:40LHR - EZE
3 stops41h 00mMultiple Airlines
Deal found 30/12£472
Sun 15/319:55LHR - AEP
3 stops40h 45mMultiple Airlines
Deal found 1/1£473
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 2 January 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 858,174 searches. Data last updated 2 January 2026.
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
Thu 22/1
15:30-07:55
1 stop19h 25m
Buenos Aires Ministro Pistarini
Wed 11/2
17:45-16:50
1 stop20h 05m
£834
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Fri 23/1
09:10-07:20
2 stops25h 10m
Buenos Aires Ministro Pistarini
Tue 10/2
23:55-06:20
2 stops27h 25m
£837
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Wed 4/2
07:25-09:20
2 stops28h 55m
Buenos Aires Ministro Pistarini
Mon 2/3
22:05-09:40
2 stops56h 35m
£837
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Wed 8/4
22:05-15:20
1 stop21h 15m
Buenos Aires Ministro Pistarini
Tue 14/4
16:45-15:35
1 stop18h 50m
£839
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Tue 30/6
22:35-22:25
2 stops27h 50m
Buenos Aires Ministro Pistarini
Sun 2/8
23:55-15:10
2 stops35h 15m
£839
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Sun 15/3
22:00-11:45
1 stop16h 45m
Buenos Aires Ministro Pistarini
Sun 29/3
12:25-08:10
1 stop15h 45m
£850
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Mon 2/3
20:05-11:50
2 stops42h 45m
Buenos Aires Ministro Pistarini
Wed 11/3
14:40-21:25
3 stops27h 45m
£860
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Sat 11/4
21:45-10:45
1 stop17h 00m
Buenos Aires Ministro Pistarini
Tue 12/5
12:25-08:10
1 stop15h 45m
£868
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Thu 2/4
11:30-08:50
2 stops25h 20m
Buenos Aires Ministro Pistarini
Sat 11/4
20:25-11:05
1 stop34h 40m
£870
LondonBuenos Aires
LHR - AEP
LHRAEP
London Heathrow
Sun 12/4
22:05-05:40
1 stop35h 35m
Buenos Aires Jorge Newbery
Wed 15/4
07:00-15:35
1 stop28h 35m
£873
Flights are sorted by cheapest return flights first.
Deals found on 1/1
Showing 1-10 of 39 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 26 December 2025.
Booking 90 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, December is the cheapest month in which you can book a flight from London Heathrow Airport to Buenos Aires (average of £520). Flying from London Heathrow Airport to Buenos Aires in July is currently the most expensive (average of £886). 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 2 January 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 2 January 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).
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.
Frankfurt am Main (FRA) – chosen by Cheapflights users on 25% 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 £753.
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 31m.
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 Rio de Janeiro (GIG) offer the fastest connection on this route, with an average stopover time of 1h 36m.
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 2 January 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Buenos Aires, such as LATAM Airlines, Air France, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!
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 19h 25m. Lufthansa provides one of the quickest options available for as low as £834. 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 £697 on this airline. Additional options worth looking into are Iberia and Finnair, starting at £715 and £751 round-trip. Avianca is 29% 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?
£373 is the cheapest one-way deal found within the past few days, from Avianca. You may also be able to find cheap deals on Iberia and LATAM Airlines, with prices starting from £542 and £597, respectively.
What are the cheapest flights from London Heathrow Airport to Buenos Aires?
Looking at all options, your cheapest flight can be booked for £881. While the most popular route (London Heathrow - Buenos Aires Jorge Newbery) can be booked for £823 on average, our data indicates £1,183 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, December is the cheapest month in which you can book a flight from London Heathrow Airport to Buenos Aires (average of £520). Flying from London Heathrow Airport to Buenos Aires in July is currently the most expensive (average of £886). 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 2 January 2026.
Top 8 airlines flying from Heathrow to Buenos Aires
Discover the top 8 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 2 January 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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