Cheap Flights from London Heathrow to Buenos Aires

Travellers and cabin class

Compare London Heathrow to Buenos Aires flight deals

Find the cheapest month or even day of the year to fly to Buenos Aires

Book the best Buenos Aires fare with no extra fees

Flight deals from London Heathrow to Buenos Aires

Looking for a cheap last-minute deal or the best return flight from London Heathrow to Buenos Aires? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from London Heathrow to Buenos Aires

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Buenos Aires flights are currently cheapest in September.

Alternative London Heathrow to Buenos Aires routes

Looking for the cheapest, fastest or easiest route from London Heathrow to Buenos Aires? You could fly into the following airports instead.

London to Buenos Aires: Flight information

The things to know before you go.
Cheapest flight found770 €
Cheapest month to flySeptember

Finding cheap flights from London Heathrow to Buenos Aires: Frequently asked questions

There are 2 airports in Buenos Aires: Buenos Aires Jorge Newbery and Buenos Aires Ministro Pistarini.
The best price we found for a return flight from London Heathrow to Buenos Aires is 770 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from London Heathrow to Buenos Aires. But we found flights with one or more stops from 770 €.
As of June 2025, there are no flights flying from London Heathrow to Buenos Aires.
The cheapest month to fly from London Heathrow to Buenos Aires is usually June 2025.
If you're flying from London Heathrow Airport, the cheapest airport near Buenos Aires is Buenos Aires Jorge Newbery – which is 6.8 km away from the centre of Buenos Aires. We've found flights into this airport from 770 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Buenos Aires on Thursday, 25 September 2025.
No airlines currently offer direct flights between London Heathrow Airport and Buenos Aires. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Buenos Aires but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Buenos Aires is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 11°C. January is typically the warmest month in Buenos Aires, when it usually averages around 30°C. You can expect the least rain in June. The coldest month is July, with temperatures averaging 6°C. The rainiest month is March.
Currently, TAP Air Portugal offers the cheapest flight tickets to Buenos Aires.

Travelling from London Heathrow Airport (LHR) to Buenos Aires: what you need to know

  • London Heathrow Airport is located in London. Following the UTC-3 timezone, Buenos Aires is three hours behind London.

  • Leave enough time to catch your LHR to Buenos Aires flight. As a general rule, turn up two hours before international departures and an hour ahead for domestic flights.

  • Taking off during a peak time like school or public holidays? Expect longer queues at security and check-in. To play it safe, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • We make it easy to book plane tickets from LHR to Buenos Aires with a stopover. To see all your options, deselect 'Direct flights only.' Then, choose a flight that has a stop long enough to explore your chosen city. Popular stopovers include:

    • Amsterdam Airport Schiphol (AMS)

    • Adolfo Suarez Madrid-Barajas Airport (MAD)

    • Arturo Merino Benitez Airport (SCL)

  • Located around 26 kilometres from the centre of London, LHR can be reached in about 55 minutes by car. The journey on public transport takes roughly 1 hour.

  • Have an early flight from London Heathrow Airport to Buenos Aires? Avoid the hassle of rushing to the airport (and enjoy a little extra shut-eye) by choosing one of these stays near LHR:

  • When it comes to the on-time performance of London Heathrow Airport, data shows 68.18% of flights arrive within the scheduled time frame.

How to find the cheapest flights from London Heathrow Airport (LHR) to Buenos Aires

  • The best price we've seen for a one-way London Heathrow Airport to Buenos Aires flight is 453 €. The cheapest price for a return flight is 770 €. Remember fares can change due to availability at the time of booking.

  • Booking in advance is often the key to locking in a cheap flight from LHR to Buenos Aires. Airlines adjust prices based on demand, so the closer you get to departure, the more you'll likely pay.

  • If you're flexible with your travel dates, take advantage of the 'Whole month' search tool. It'll show you the cheapest price across each month when searching for a London Heathrow Airport to Buenos Aires ticket.

  • Spend less time searching for cheap flights from LHR to Buenos Aires by creating a Price Alert. We'll send you an email or push notification on the app when a new low fare is offered.

  • Save on your flight from London Heathrow Airport to Buenos Aires with the help of our filters. Select your preferred times, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

Airports in Buenos Aires

Jorge Newbery Airport (AEP)

  • Jorge Newbery Airport (AEP) is around 14 kilometres from central Buenos Aires. If you're catching a cab or a ride-share, the drive takes roughly 20 minutes.

  • It takes around 40 minutes to get there by public transport.

  • Think about booking a hotel near AEP if you're coming in on a late flight from London Heathrow Airport to Buenos Aires. Choose one of these options and make arrival day easier:

  • Explore without limits with a Jorge Newbery Airport rental car. Pick up your wheels from Hertz, Localiza or rentar low cost and experience more of Buenos Aires and beyond.

  • To secure the lowest price, book your vehicle from Jorge Newbery Airport around one week ahead of your flight from LHR to Buenos Aires.

Ministro Pistarini Airport (EZE)

  • After your flight from London Heathrow Airport to Buenos Aires has arrived, you can get to the city centre in around 35 minutes by car. Central Buenos Aires is roughly 32 kilometres from Ministro Pistarini Airport (EZE).

  • If you travel by public transport, you'll get to the city centre in 2 hours 10 minutes or so.

  • After stepping off your LHR to Buenos Aires flight, unwind at a hotel close to EZE. These are some comfortable accommodation options that'll help you get into relaxation mode:

  • Hertz, Cactus and Localiza make collecting a Ministro Pistarini Airport rental car quick and easy. These suppliers are located in or around the terminal and will have you behind the wheel before you know it.

  • Get what you want, not just what's left over. Booking your ride from EZE one week in advance often means lower prices and a bigger choice of vehicles.

Best time to go to Buenos Aires

  • Carefully consider your travel dates before booking your flight from London Heathrow Airport to Buenos Aires. The city comes alive during high season, but rates are often higher and top attractions can be busy. Go to Buenos Aires in the off-season if you want a more relaxed vibe.

  • The warmest month in Buenos Aires is January, with temperatures ranging between 19ºC (66ºF) and 31ºC (88ºF). Book your London Heathrow Airport to Buenos Aires plane ticket then if you enjoy this type of weather.

  • July has average temperatures of between 5ºC (41ºF) and 15ºC (59ºF). Look for a cheap ticket from LHR to Buenos Aires around that time if you want to travel when it's cooler.

More about Buenos Aires

  • When it comes to searching for somewhere to lay your head, you'll find the best places to stay in Buenos Aires right here. Check out these options once you've locked in your flight from London Heathrow Airport to Buenos Aires:

  • Recoleta Cemetery and Obelisco de Buenos Aires are just a couple of the top-rated attractions to add to your Buenos Aires itinerary. Keep the adventure rolling by checking out Casa Rosada.

Explore more of Argentina

  • Rosario is just one of the many places in Argentina waiting to be discovered once you've seen Buenos Aires. Around 274 kilometres away to the north-west, its top attractions include Monumento a la Bandera (Flag Monument), Predio Ferial Parque de la Independencia and Parque Nacional a la Bandera.

  • Around 386 kilometres south of Buenos Aires, Mar Del Plata is another essential stop in Argentina. Experience major highlights starting with Casino Central de Mar del Plata, Centro Cultural Villa Victoria Ocampo and Villa Ortiz Basualdo.Museo Municipal de Arte Juan Carlos Castagnino.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.