Originally Posted by SkychickenFO

Depends....at OO some trips will flow through other bases, some will be hub turns. For example ORD CRJ has UA/AA trips that just do turns out of ORD for the entire 1-4 days. Some UA trips flow through IAH/DEN/SFO/IAD, AA through PHX/DFW/LAX, and all DL through MSP/DTW and you don't see base again until go home day. This will vary by the plane/base/ and even month but generally there will be a mix of flow through other bases and trips that are just hub turns. You can also pick up out of other bases if that's your thing.