We should learn later today what reciprocal benefits AA elites will get flying on US Airways and vice versa from today onwards.
You can already book awards on AA.com that include US Airways segments and you can also use Dividend Miles for award segments on AA (need to phone in).
The AA.com award search will mix and match carriers and if availability on US Airways exists it will be shown as well.
Above is an example for an award search between Honolulu and Rome. I hate using BA over the pond due to very high fuel surcharges and AA’s own award availability has been somewhat limited as of late. AA.com returned availability using US Airways from Philadelphia.
At least the using miles between the airlines has already been implemented. I am eagerly waiting what are the other benefits that will be announced later today.