Western Pacific Airlines, or "WestPac", was doomed from the beginning. Its airport hub was Colorado Springs, south of Denver. Even worse, the airport location was actually south of Colorado Springs, putting it further away from Denver which was dominated by United and Frontier.
Recognizing that it needed to attract more Denver-area fliers, it moved the bulk of its operations to DIA. It was liquidated less than a year later after a proposed merger with Frontier failed.
The legacy of WestPac, however, was the logo jets they flew, as featured prominently in this timetable.