Cheap flights from London Heathrow to Buenos Aires

Q: How much are flights normally?

£ 683. If you see flights from London Heathrow to Buenos Aires for less than this, you've found a good deal.

Q: When is the best time to book cheap flights?

25 weeks. If you want cheap flights from London Heathrow to Buenos Aires, this is the best time to book.

Q: What are the cheapest airlines?

American Airlines, British Airways, Iberia Airlines, LATAM. These airlines usually offer the cheapest flights from London Heathrow to Buenos Aires.

Q: What airlines fly indirectly?

LATAM, American Airlines, British Airways, Lufthansa, KLM. These airlines fly from London Heathrow to Buenos Aires, but you’ll have at least one layover.

Q: When is high season?

December. This is the most expensive time to fly to Buenos Aires. If this is when you want to go, book your flight from London Heathrow in advance.

Q: When is the cheapest time to fly?

June. Flights from London Heathrow to Buenos Aires are usually cheaper at this time of year.

Q: How long is the flight?

15 hrs 25 mins. This is the shortest flight time from London Heathrow to Buenos Aires.

Q: How long should I stay in Buenos Aires?

14 days. Most people spend this amount of time in Buenos Aires.

from as little as £696

17 nights in Buenos Aires, departing London Heathrow on 13 / Apr / 2025 with Air Canada (price found 19 hours ago)

Subject to availability, prices correct of the last 24 hours

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Cheap return flights from London Heathrow to Buenos Aires

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The London Heathrow / Buenos Aires route

All 11116 km of it

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Buenos Aires flight facts

What you need to know

How much are flights normally?

£ 683

If you see flights from London Heathrow to Buenos Aires for less than this, you've found a good deal.

When is the best time to book cheap flights?

25 weeks

If you want cheap flights from London Heathrow to Buenos Aires, this is the best time to book.

What are the cheapest airlines?

American Airlines
British Airways
Iberia Airlines
LATAM

These airlines usually offer the cheapest flights from London Heathrow to Buenos Aires.

What airlines fly indirectly?

LATAM
American Airlines
British Airways
Lufthansa
KLM

These airlines fly from London Heathrow to Buenos Aires, but you’ll have at least one layover.

When is high season?

December

This is the most expensive time to fly to Buenos Aires. If this is when you want to go, book your flight from London Heathrow in advance.

When is the cheapest time to fly?

June

Flights from London Heathrow to Buenos Aires are usually cheaper at this time of year.

How long is the flight?

15 hrs 25 mins

This is the shortest flight time from London Heathrow to Buenos Aires.

How long should I stay in Buenos Aires?

14 days

Most people spend this amount of time in Buenos Aires.

Alternative flights from the UK to Buenos Aires

Check out prices for other routes

London to Buenos Aires

from £666 pp

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Manchester to Buenos Aires

from £831 pp

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Edinburgh to Buenos Aires

from £808 pp

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Birmingham to Buenos Aires

from £1,049 pp

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London City Airport to Buenos Aires

from £1,138 pp

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London Gatwick to Buenos Aires

from £666 pp

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London Luton to Buenos Aires

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London Stansted to Buenos Aires

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Alternative flights from London Heathrow

You might find cheaper flights nearby

Buenos Aires Arpt. Jorge Newbery Airport from London Heathrow

from £908 pp

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Buenos Aires Ezeiza Ministro Pistarini Airport from London Heathrow

from £696 pp

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Today alone, Netflights has searched over 5,596 flights. 13 / Apr / 2025 is currently the lowest priced day of the year to fly the London Heathrow/Buenos Aires route. There are around 180 flights on any given week from the UK to Buenos Aires and the cheapest month to fly right now is April.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)

LOWEST

8 °C

AVG

18 °C

HIGHEST

27 °C

Rainfall (mm)

LOWEST

62 mm

AVG

88.7 mm

HIGHEST

121.1 mm

Key facts about Buenos Aires

Currency

Argentine peso

Language

Spanish

Guaraní

Timezone

3 hrs behind GMT

How to get cheap flights from London Heathrow to Buenos Aires

Tips and advice from our flight experts

We've collated all the flights from London Heathrow to Buenos Aires, to help you find the best deal. The most popular airlines are LATAM, Lufthansa & American Airlines. Browse the flights on this page to find ones that suit you best – Netflights scans 5,596 flights worldwide, making it easy for you to see all your options.

Normally, Buenos Aires Ezeiza Ministro Pistarini Airport is the cheapest airport to fly into Buenos Aires. This isn’t necessarily the case for your chosen dates, but it’s worth bearing in mind. There are 180 flights every week to Buenos Aires, and the flight from London Heathrow normally takes about 20 hrs.

You can fly to Buenos Aires from £696. But, if you adjust your search to incorporate other airports near London Heathrow, this figure may drop – your search currently only covers flights from London Heathrow. Just so you know, the highest prices will be in December.

Booking a flight to Buenos Aires with Netflights is easy. You can search by month to see the cheapest day of the week to fly. Plus, you can add accommodation and car hire to your booking. Prices for accommodation and flights are generally lower in June – which is also the cheapest time to fly.