The Avalanche trailed 2-1 entering the third but came out strong at the start of the period. They put nine quick shots on goalie Al Montoya before Hejda tied it with 12:47 left on an assist by Stastny.
Stastny netted the winner with 5:28 left to give Colorado its fourth straight victory.
Montoya stopped 33 shots before being pulled for an extra skater with 1:30 left.
That group is not satisfied until we win a Stanley Cup. When we do win that Stanley Cup, I don't think we'll be satisfied then either. We're going to want another one. We have the group to do it. We have all the pieces. We just need to put them together.
— Ducks forward Ryan Kesler after signing a six-year extension with Anaheim this past July