The 21-year-old defenseman played two games with the Flyers in October before returning to the team's AHL affiliate.
Gostisbehere was a third-round pick in the 2012 draft. He won an NCAA national championship with Union College last spring. He scored 82 points in 119 college games over three years.
The Flyers also announced that defenseman Braydon Coburn would return to the lineup for Saturday night's game against the Avalanche. Coburn had been sidelined since the team's first game with a foot injury.
- Dan Gartland