£551 Find Cheap Flights from London Heathrow Airport to Buenos Aires – Compare and Save

Four cabin classes are available on flights from London Heathrow Airport to Buenos Aires:

• Economy class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

A direct flight from London Heathrow Airport to Buenos Aires takes 00m, covering 6,898 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Return flights from London Heathrow Airport to Buenos Aires range from £889 to £1,216, with an average of £1,025 over the past 12 months. Anything below £889 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 12% above the £1,025 route average. Book 9 weeks before departure for the lowest fares.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £816 return via Bogotá El Dorado (BOG), compared with £1,130 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £75–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £963 to £7,187. That means the highest observed fare was about 7x higher than the lowest one.

One-way fares from London Heathrow Airport to Buenos Aires are currently lower than usual. Average one-way flight prices are about £581, which is 10% below the typical average for this route.

Since Buenos Aires is served by multiple airports, car hire options and rates can vary depending on which one you fly into.
Near Buenos Aires Ministro Pistarini Airport (EZE) – daily rates from around £12:

• Hertz
• Rentacar
• Street Rent a Car
• Alamo
• Localiza

Near Buenos Aires Jorge Newbery Airport (AEP) – daily rates from around £17:

• Hertz
• Alamo
• Localiza
• Rentacar
• Street Rent a Car

Flights from London Heathrow Airport to Buenos Aires usually depart from London Heathrow (LHR) and may arrive at several airports in Buenos Aires area, including Buenos Aires Jorge Newbery (AEP) and Buenos Aires Ministro Pistarini (EZE).

One-stop flights from London Heathrow Airport to Buenos Aires most commonly connect through:

• Madrid Barajas (MAD) – 36% of one-stop connections
• Sao Paulo Guarulhos Intl (GRU) – 16% of one-stop connections
• Bogotá El Dorado (BOG) – 15% of one-stop connections
• Frankfurt am Main (FRA) – 13% of one-stop connections

Yes. Flexible dates can save you up to 12% on flights from London Heathrow Airport to Buenos Aires. Tuesday is the cheapest departure day at £995 return on average, while Sunday is the most expensive at £1,126, a difference of £131.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

Flying via Rio de Janeiro–Galeão Intl (GIG) gives the shortest average 1-stop total travel time of 16h 22m, compared to 16h 56m via Frankfurt am Main (FRA) and 17h 04m via Amsterdam Schiphol (AMS).

Buenos Aires is 3 hours behind London Heathrow Airport (Argentina Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

Obelisco de Buenos Aires is one of the most viewed places in Buenos Aires on KAYAK.

Among airlines operating London Heathrow Airport to Buenos Aires flights:

• British Airways: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• British Airways: a cabin bag and a checked bag in Economy class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.