Join Date: Dec 2011
Location: BOS, BWI, DCA, IAD
Programs: American, Delta, JetBlue, United
Posts: 2,049
I have had USAir flights credited to Mileage Plus several times. My MP number begins with 3 zeros, and these digits have always appeared on the reservation. I would call again, or at least speak about it with the agent at the airport when you check in.