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BA’s oneworld partner airline LATAM is offering some fantastic Business Class fares between Lisbon/Porto and Sao Paulo – starting at just £438 one way:
As you can see below, as well as flying direct, you could choose to route via Madrid or Barcelona if you’re looking to maximise BA Executive Club Tier Point earnings.
Flights in the other direction look to be about £550, so you could book a return for under £1,000.
If you credited a direct Lisbon-Sao Paulo one way flight to British Airways Executive Club, you should earn ~6,500 Avios + 140 Tier Points. If you included a sector to Madrid/Barcelona, you’d pick up another 40 TPs.
Alternatively you could credit to Alaska Mileage Plan and earn ~10,500 Miles, which I would value at about £180, making these fares even better!
I’ve flown LATAM Business Class a couple of times and was quite impressed – it’s a solid product, and for the price is surely unbeatable!