Originally Posted by
ernestnywang
Because the first flight on the ticket is UA-coded, UA is the Most Significant Carrier, hence UA bag fees apply for the entire ticket. I don't believe it should mean OP should be charged, though. However, if someone who doesn't have status with AA bought the same ticket, AA can rightfully charge 35USD instead of 30USD.
Very interesting. So not only did they incorrectly charge me, but AA pocketed an extra 5 bucks in the process!
Or does AA actually send the ill-gotten $35 to UA?