Originally Posted by atc0_99

I was getting ready to book a flight from ORD to NRT on Japan Airlines. I had assumed since they were code sharing with AA that I would get the same base miles. But looks like if I book "I" class, I only get 55% base miles? Is that true? And why should Premium economy get more miles than discount business?

http://www.aa.com/i18n/AAdvantage/ea...ines/japan.jsp

also, is there an easy way to tell whether it is likely that what is being sold is booking "I" class or "J" class on Japan Airlines? My Japanese host company is booking my flight and i don't want to seem crass asking them what the fare basis is!