Having recently booked a redeye from LAX-ORD-ATL, I would love to be able to get some rough idea of the wing of ORD where I will arrive and where I will leave. There are 2 Admiral's Clubs at ORD, but only the one in Terminal 3, HK wing has showers. Since I will be arriving in the morning, and leaving an hour and a half later, it would be nice to shower after my midnight flight. But I have no idea whether I will have enough time, and whether I can actually get to the AC with showers and use them before I depart.

Is there any way to determine what terminals are likely to be arrival/departure terminals on this route?