Lysiak led the Flames in scoring in each of his five full seasons with the team and represented the Flames in three consecutive NHL All-Star Games, in 1975, 1976 and 1977. He served as the Flames' team captain during the 1977–78 and 1978–79 seasons, but he was traded to the Chicago Black Hawks in an unpopular multiplayer deal midway through the 1978–79 season. Eight players were involved in the trade, the biggest trade numbers-wise in NHL history at the time. He is the Atlanta Flames' all-time leader for assists with 276 and points with 431 and ranks second in goals with 155. He had 21 two-goal games with the Flames and one hat trick.