I took out a BA American Express card to earn Avios points and use it for some big ticket spending but I never seem to accumulate enough to make a meaningful difference to booking flights.
I was talking to a friend and he said that he'd booked return flights for his family of four to the US using Avios.
When I asked how, he said that he puts almost all his spending on the card.
For the British Airways Amex card, the Avios reward scheme works as one Avios for virtually every £1 spent on purchases - you can also collect 5,000 bonus Avios if you spend £1,000 in the first three months of membership