[5] In 2014, Fegley made his acting debut in the drama film Fort Bliss, along with Michelle Monaghan and Ron Livingston, in which he played Paul Swann.

[7] He played the young Judd Altman in the comedy-drama film This Is Where I Leave You, directed by Shawn Levy and released in September 2014 by Warner Bros.

[9] Fegley played the lead role of Pete in Walt Disney Pictures' fantasy comedy-drama film Pete's Dragon (a reimagining of Disney's 1977 film), opposite Oona Laurence, Bryce Dallas Howard, and Robert Redford.

Fegley appeared in The Weinstein Company's comedy film The War with Grandpa, starring Robert De Niro, released in August 2020.

[11] In January 2021, Fegley entered early negotiations to play the role of Lampwick in Disney's live-action adaptation of Pinocchio.