 Alt posted 10 points in 23 games in the AHL before receiving his third recall to Flyers on January 22, 2018.As the Flyers reserve depth blueline, Alt was a frequent healthy scratch and failed to feature in a game in over a month before he was placed on waivers in order to return to the AHL.On February 26, 2018, Alt was claimed off waivers by the Colorado Avalanche.