Philip Tomasino then extended it to 3-0 with another power-play goal at 9:02, taking a pass from Letang with a wrist shot from the left circle with Vladar down in the crease. He has scored in the past two games since being acquired in a trade from the Nashville Predators on Monday.
Rickard Rakell pushed it to 4-0 at 5:25 of the third period on a backhand from the crease off a pass from Sidney Crosby.
Letang made it 5-0 at 7:59 on a third power-play goal for Pittsburgh, a one-timer from the point.
“I think our mindset going over the boards, it's just creating chances with shooting,” Letang said. “I think we did a pretty good job. [Bunting] was pretty good today around the net. So we kept it simple.”
Huberdeau cut it to 5-1 at 14:27 with a wrist shot from the slot before Kadri pulled the Flames to within 5-2 on another wrist shot at 15:05.
Lizotte scored from the high slot at 18:23 for the 6-2 final.
“There’s certain parts to our game when we’re doing things the right way, I feel like we’re hard to play against,” Calgary coach Ryan Huska said. “There were stretches of it on this trip that we saw, but it wasn’t enough for us.”
NOTES: Letang had his 108th multi-assist game, one shy of tying Ron Francis (109) for the fifth most in Penguins history. Erik Karlsson (132) and Victor Hedman (108) are the only active defensemen with as many. ... Flames forward Justin Kirkland did not play after sustaining a lower-body injury in a 5-2 loss at the Columbus Blue Jackets on Friday. ... Penguins defenseman Owen Pickering had one block and one hit in 13:24 of ice time after missing the previous two games with an undisclosed illness.