Originally Posted by
puchong
Don't know (care) about EY, but AY appears to credit only 25% for BA-O class; where did you find 100%?
This isn't BA O-class, hence the title "AA" and the link to wheretocredit for American O-class. You can buy any cheap ticket for BA O-class anywhere in the world but the mileage is crap. Obviously make sure you buy through the correct channel as OneWorld is based on marketed carrier rather than operator (as it is on StarA). The wheretocredit link has this giving more miles than 100% but believe this to be false.