Originally Posted by
ISTFlyer
It could also be maximized at 880 TP's if SFO-LAX segments are added
You could book via BA on the phone or via a travel agency.
The runs I have booked previously I have booked directly with BA over the phone. Can be a bit time-consuming but always got there in the end, and on occasion even cheaper than ITA Matrix Quotes (not by much) I think it depends on the exchange rate on the day, amongst other things.