Gaudreau snuck in behind the Tampa Bay defence before he cut towards the Tampa Bay goal and tucked a shot around Vasilevskiy and into the net.
During a man advantage for the Flames, Bennett took a pass from TJ Brodie and fired a shot on net that deflected off the stick of Lightning defenceman Braydon Coburn and past Vasilevskiy.
Jankowski scored at 2:19 of the third when he took a pass from Garnet Hathaway before making a great toe-drag move in the slot and snapping a shot to the top corner, blocker side past Vasilevskiy.
Tkachuk added another goal for the visitors at 8:34 when he beat Vasilevskiy through the legs after taking a pass from Troy Brouwer.
ONE-TIMERS
Brodie's assist was his 200th career NHL point … Although Gaudreau had gone 10 games without scoring a goal, he recorded 10 assists and had a plus-seven rating during that span … Just how hot has the top-line of Gaudreau, Monahan, and Ferland been during Calgary's five-game winning streak? In addition to his goal, Gaudreau had nine helpers while Monahan (three goals, five assists) and Ferland (four goals, four assists) recorded eight points each … The Flames improved their road record to 11-5-4 while the Lightning now have a 17-4-1 mark one home ice … The Flames have compiled an 8-6-2 record against Eastern Conference opponents this season and are 15-0-1 when leading after two periods of play.
NEXT UP
The Flames face off against the Florida Panthers on Friday (5:30 p.m., TV: Sportsnet Flames, Radio: Sportsnet 960 The FAN) before wrapping up their four-game road trip on Sunday afternoon (1 p.m., TV: Sportsnet West, Radio: Sportsnet 960 The FAN) against the Carolina Hurricanes. They return to the Scotiabank Saddledome ice on Jan. 20 against the Winnipeg Jets for a Hockey Day In Canada matinee (1 p.m., TV: HNIC, Radio: Sportsnet 960 The FAN).