Matt Stajan, Dougie Hamilton and Mikael Backlund also scored to help the Flames improve to 10-4-0 since the start of December. Ramo got his fifth career shutout and first since Nov. 29, 2014, at Arizona.
Colorado’s Jarome Iginla, vying to become the 19th player in NHL history to score 600 goals, was shut down by his former team. After getting No. 599 last Sunday against the Coyotes, he has not scored in three straight games since then.
Iginla, who scored 525 goals in 15-plus seasons with the Flames, had a couple of chances in this one but one shot was blocked and Ramo made a save on another early in the third period.
Calgary led 1-0 after the first period and then blew it open with three goals in a 4:49 span of the second period. Jooris made it 2-0 with a tip through the legs of Colorado defenceman Brandon Gormley at 8:18 and Stajan redirected defenceman Dennis Wideman's shot from the point past goalie Semyon Varlamov at 10:47.
Backlund made it 4-0 he banged in his own rebound at 13:07. It was his fifth of the season.
Calvin Pickard replaced Varlamov, who finished with 15 saves.
The Flames are last in the NHL on the power play but scored on the second of their three chances in the first period when Hamilton beat Varlamov at 7:57. It was his fifth goal of the season.
NOTES: Pickard had 15 saves. ... Avalanche D Tyson Barrie returned to the lineup after missing Thursday's game with flu-like symptoms. ... Calgary D Deryk Engelland was scratched. He took a puck to the face in Thursday's loss to the Kings. ... The Avalanche are 6-9-3 at home this season