"Today, I want to thank my trainers and teammates," Gagne said in a news release. "You inspired me to surpass myself. You made me understand that you need more than talent; it takes sacrifice and discipline and you need to work harder than your rivals. I also wish to thank my fans. Every evening, you energized me and inspired me to perform."
A two-time All-Star, Gagne spent 14 seasons in the NHL, including 11 with the Flyers.
Gagne ranks ninth on the Flyers' all-time list in goals (264) and 10th in points (535) and games played (691). He's fourth in both goals and points among left wings in Philadelphia history. In 90 playoff games with the Flyers, he had 32 goals and 15 assists.
He won a Stanley Cup title with the Kings in 2012.