Greetings oh wise ones.

Question on behalf of my brother, who is leaving at the end of this month. Not sure what his fare basis is, but since he is booked on SK and AS, I doubt it would be a oneworld explorer.

All flights are booked in L class, apart from AAL-CPH which is in C and the AS flights which are in H.

Looking primarily for the best FF program. The SK flight will credit to the QF program, not sure about AA. I doubt that L class flights qualify for BA membership. Would there be enough there for him to do a Platinum Challenge on AA? If so, where in the process would he qualify? He would not be doing a lot of additional flights throughout the year to make the Gold Challenge worthwhile, although enough to make a Platinum (oneworld sapphire) worth having.

Will be leaving SYD on 26MAY, arriving back in SYD on 29JUN - if it makes a difference.

Thanks in advance.

Itinerary is as follows:

SYD-QF-LHR-BA-OSL-BA-AAL-SK-CPH-BA-LHR-AA-BOS-AA-YYZ-AA-ORD-AA-PDX-AS-SEA-AS-SFO-QF-LAX-QF-SYD.

Dave