Ylonen made it 2-0 at 16:46 with a backhand over Ersson’s left pad in front of the net on the rebound of Jayden Struble’s shot.
Armia pushed it to 3-0 at 17:05 of the third period after scoring an empty-net goal with both teams penalized and the Flyers attacking 5-on-4.
Tippett cut it to 3-1 with 1:01 remaining before Jake Evans put a backhand into an empty net with four seconds remaining for the 4-1 final.
Three potential goals were disallowed in the third, including two by the Flyers. Philadelphia first had a goal disallowed at 1:43 after it was determined that Garnet Hathaway kicked the puck over the goal line.
“It ended up we got more chances,” Hathaway said. “They played well, they were above pucks a lot of the time. They had guys back, they didn’t stay in their zone long and I think that’s wearing on them. And I think that’s why in the third we’re more successful when, really, it’s just the process we’re going with.”
Morgan Frost had a goal disallowed and the clock was reset to 5:42 after Montreal successfully challenged for offside.
“I think we dominated the second half of the game and just couldn’t score,” Frost said.
Suzuki had a goal at 10:49 waved off immediately for a high stick.
“It was just kind of slow, a lot of reviews, challenges,” Suzuki said about the third period. “I think mentally we’ve got to stay a little bit sharper through all of that, and it was nice to get a couple of empty-net goals to seal it off.”
NOTES: Matheson, who has 51 points (10 goals, 41 assists) in 72 games, is the first Canadiens defenseman with 50 points in a season since P.K. Subban had 51 in 2015-16 (six goals, 45 assists) in 68 games. … Slafkovsky, who turns 20 on Saturday, had an assist to extend his point streak to nine games, tying the third-longest by a teenager in NHL history. Patrik Laine had a 15-game streak in 2017-18 for the Winnipeg Jets, and Andrei Svechnikov had 11-game and nine-game point streaks for the Carolina Hurricanes in 2019-20. … Suzuki’s goal was his 10th on the power play, the most by a Montreal player since Shea Weber scored 12 power-play goals in 2016-17.