I'm trying to book a flight out of HVN (New Haven) to DFW using miles. While I can tell on US airways site that there is availability of award tickets, I cannot see the same availability on AA.com.

I know that award availability varies, but this seems strange. Also, in case it helps, in order to fly anywhere out of HVN, you have to fly to PHL. I can tell that there is availability on AA.com for the PHL to DFW flights - so it appears that the HVN segment is the problem.

Thanks in advance for any ideas!