My iPhone left Louisville at 3:58PM local time. It's most definitely going to the hub in Commerce City, CO, but to get here, I'm assuming it's going to DIA.
There are no flights from KSDF to KDEN. It must be going to UT or NM (KSLC or KABQ).
Edit: unless it's traveling ground. Packagemapping says it's in transit to Commerce City, CO...