Avios overview

All of the points and surcharges referenced on this page are for a single journey (not return) and per person. Surcharges on a return flight may be less than double that of a single, depending on the element of the surcharge that relates to airport and country taxes.

There is no first class cabin on flights from London Heathrow to Buenos Aires.

British Airways flies to Buenos Aires only from London Heathrow.

Find out which dates are peak, or off-peak in 2026.

Buenos Aires Avios needed table

Cabin	Avios Needed (Off-Peak)	Avios Needed (Peak)
Economy	44,000	49,500
Premium Economy	60,500	88,000
Business	121,000	132,000

Buenos Aires Avios & cash combinations

On most flights you can choose to reduce the number of points needed for a flight, and pay a higher cash element. This is called Reward Flight Saver. When you select a cabin during a search for a reward flight you'll see a breakdown of the points you need at the base of the page. Clicking "more pricing options" will give you five alternatives, where you use fewer points but pay more cash.

This is useful if you don't have enough Avios for a flight OR if you want to preserve more points for the future. You do not select an alternative points/cash combination on this page. Click Continue and you'll be able to make a decision on the next page. By default BA will select the combination with the highest number of Avios and lowest cash element based on the Avios you currently have in your account or household account.

Cabin Option	Off-Peak (Avios + Cash)	Peak (Avios + Cash)
Economy	44,000 + £135 34,150 + £180 25,100 + £235 19,250 + £270 13,250 + £310 8,750 + £355	49,500 + £135 43,000 + £180 38,500 + £235 28,650 + £270 19,850 + £310 13,500 + £355
Premium Economy	60,500 + £250 54,500 + £310 50,100 + £340 37,500 + £405 28,600 + £520 20,100 + £595	88,000 + £250 81,500 + £310 77,000 + £340 58,400 + £405 43,000 + £520 30,900 + £595
Business	121,000 + £335 101,250 + £410 96,250 + £475 72,600 + £745 62,750 + £995 46,250 + £1245	132,000 + £335 122,150 + £410 115,500 + £475 93,500 + £745 68,250 + £995 48,150 + £1245

How to make your Avios go further

If you're based in the UK then there's a way to make your Avios go even further, and that's through a Companion Voucher. I've written extensively about these amazing vouchers. They're not free in that you have to spend at least £15,000 on an Amex Card, but they're absolutely worth it. Read my guide on is a BA companion voucher worth it? to understand how to use a 2-4-1 voucher. On top of that, you can also use a Barclays Cabin Upgrade voucher to reduce the number of points needed. You can get these by either being a Barclays Premier customer, or by hitting a spend level on a Barclaycard.

How can you search for reward seat availability?

BA offers a number of ways to search for reward seats: their "Reward Flight Finder", their in-app "Reward Flights" section and just making a dummy booking. There are also third party tools that you can use, although I've managed to find plenty of seats without having to pay for a platform. I wrote about the best (and worst) ways to search for Avios availability. If you're looking to book seats to a popular destination then planning ahead is critical: seats become available 355 days before the flight date.

London Heathrow to Buenos Aires Avios Frequently Asked Questions