Last week we started our flight home from Hawaii on a US Airways codeshare operated by Hawaii, going from HNL to OGG, where we connected to US Airways flights OGG-PHX-EWR. We had 3 bags and were charged a total of $55. The rationale was that we were flying to the mainland, even though we were on US tickets and they were transporting the bags to the mainland. We had paid no baggage fees to US on the flights to HNL because I am Silver Preferred.

When we checked in, the HA agent gave us the option of checking in only to OGG, in which case he would have charged us $15 for 1 extra bag (1 is free on inter-island flights). We then would have to retrieve the bags and check in a 2nd time with US in Maui. We elected to pay the $55 fee.

It seems like HA is making a lot of extra money on codeshare baggage fees.