Jakub Voracek scored the game's lone goal early in the first period as the Flyers foiled the Canadiens 1-0 in Game Three of their first-round playoff series in Toronto.
Carter Hart stopped all 23 shots he faced as the Flyers scored the shutout to take a 2-1 lead in the best-of-seven series.
Philly is back in control after getting shut out 5-0 in Game Two.
Carey Price finished with 19 saves in defeat for Montreal.
The Habs will look to even things up in Game Four on Tuesday.
with files from Canadian Press