Following the 2009–10 season, McClelland was not retained and Stewart, who had been working as team president and general manager since leaving the bench, resumed head coaching duties.

The exhibition took place on January 14, 2009, at the Budweiser Events Center, with the Eagles defeating the CHL All-Stars, 8–4.

[2][3] Former International Hockey League commissioner Dennis Hextall has stated that he had heard that the Colorado Eagles may already be included in the ECHL's tentative schedule for the 2011–12 season.

[4] On May 29, 2011, KEVN-TV in Rapid City, South Dakota reported that Colorado was to move to the ECHL in time for the 2011–12 season.

[6] At the press conference, Head Coach, General Manager and President Chris Stewart announced that the team had been accepted as an expansion franchise in the ECHL for the 2011–12 season.

In August 2011, the Eagles were assigned to the Western Conference's Mountain Division as part of the league realignment for the 2011–12 ECHL season.

[11][12] In their first season with the Avalanche affiliation, the Eagles would go on to finish second in the Mountain Division of the ECHL and then win the Kelly Cup as the 2017 playoffs champions.

[17] With the Golden Knights choosing to affiliate with the Chicago Wolves instead of adding their own AHL expansion team, talks with other organizations were opened.

The owners and managers of the Eagles began discussions with the Avalanche with interests into becoming an AHL expansion for the 2018–19 season.

Prior to the 2022–23 season, the Avalanche announced a restructure of their executive committee with Kevin McDonald hired and introduced as the incoming Eagles General Manager, with Craig Billington re-assigned to other duties within the organization.

One appearance was in 2007 when Greg Pankewicz scored an incredible goal in Game 7 of the second round of the 2007 President's Cup Playoffs against the Oklahoma City Blazers where he lifted the puck over the defender's stick, knocked it around the defender with his stick, and made a diving finish to put the puck in the net.