Jake Guentzel made it 2-0 at 18:30 of the third period on the power play with an empty-net goal.
"That's two out of the past three games taking a penalty when we're trying to get the goalie out, which is frustrating," Tortorella said.
Said Lightning defenseman Ryan McDonagh: "We knew it was going to be a grinding, patient game. We didn't create a lot tonight, but you have to give them credit, they defend hard and work hard. It was great for us to find a way."
Philadelphia was 0-for-5 on the power play, failing to score on a four-minute man-advantage in the second period when Lightning defenseman Emil Lilleberg was given a double minor for high-sticking.
"We've got to score a goal," Tortorella said. "The four-minute penalty...it's not good enough. We needed a play off our power play, and we didn't get it."
The Flyers have failed to score on their previous 23 power plays.
"We're collapsing and trying to get numbers to the net," Konecny said. "We're not trying to be fancy, just trying to bounce one off somebody.
NOTES: Vasilevskiy’s fifth shutout tied Igor Shesterkin for the second most in the NHL this season, behind Connor Hellebuyck (six). … Tampa Bay won for the first time this season after scoring two goals or fewer (1-15-3). ...The Lightning penalty kill is 27-for-29 over the past 10 games. ... Tampa Bay forward Brayden Point had an assist, his first point in five games.