The Trappers joined the PCL in 1981 when Edmonton businessman Peter Pocklington purchased the Ogden A's franchise from Utah trucker Dennis Job.

The Trappers were immediately popular with the community, often above the league average in attendance, attracting almost half a million fans every season.

In 1995, John Ducey Park was torn down and replaced by Telus Field where the Trappers celebrated three PCL titles in their last decade, most recently in 2002 under the affiliation of the Minnesota Twins.

In 2004, future Montreal Expos and Toronto Blue Jays pitcher Scott Downs threw a no-hitter against Las Vegas on June 11.

They defeated the Portland Beavers to make the post-season, but were eliminated immediately by the Sacramento River Cats in a three-game sweep.