Laczynski was recalled from AHL Henderson on Thursday.
Laczynski was placed on waivers by the Golden Knights on Sunday, per Elliotte Friedman of Sportsnet.
Laczynski signed a two-year, $1.55 million contract with the Golden Knights on Monday, per Elliotte Friedman of Sportsnet.
Laczynski was placed on waivers Tuesday.
Laczynski extended his point drought to 13 games during Thursday's win over Chicago.
Laczynski (ankle) was activated from injured reserve Friday, Adam Kimelman of NHL.com reports.
Laczynski (ankle) joined the Flyers for Friday's practice, per Sam Carchidi of Philly Hockey Now.
Laczynski (lower body) skated before practice Thursday, Jordan Hall of NBC Sports Philadelphiareports.
Laczynski was placed on injured reserve with a lower-body injury Tuesday. He's considered week-to-week, per Olivia Reiner of The Philadelphia Inquirer.
Laczynski contributed a goal in the Flyers' 5-3 win against Colorado on Monday.