The Flyers (12-15-4) lost the final four games of a five-game road trip (0-3-1) that ended with a 5-1 loss to the Vancouver Canucks on Saturday. They're last in the Metropolitan Division with 28 points, eight behind the third-place Pittsburgh Penguins.
Hakstol was not on the ice when practice began at Virtua Center Flyers Skate Zone on Monday, and his firing was announced a short time later. Scott Gordon, who had been coaching Lehigh Valley of the American Hockey League, was named Hakstol's replacement.
The Flyers play the Detroit Red Wings at Wells Fargo Center on Tuesday (7 p.m. ET; TVAS, NBCSP, FS-D, NHL.TV).
"When I took this job my intention was certainly to take some time to get to know the team, to get to know Dave," said general manager Chuck Fletcher, who was hired Dec. 3, one week after Ron Hextall was fired. "Going on the road last week and having all that time to spend with him, watch the team, I came away tremendously impressed by Dave as a human being.
"But to my eyes there was a disconnect between what he was preaching and how the players were playing. And as the leader of the team that responsibility falls on him and I felt at this point we needed a new voice."
Fletcher said the Flyers' 6-5 overtime loss to the Calgary Flames on Wednesday showed him something had to change. Philadelphia led 5-3 in the third period but allowed two goals in the final 1:08 of the third period before Calgary forward Johnny Gaudreau scored 35 seconds into overtime.
"We're playing hard, competing, two-goal lead, but the chances we continue to take, our puck management, our game management, the turnovers we committed ... we just found way to shoot ourselves in the foot and we made it really hard on ourselves," Fletcher said. "We've got to close that game out and that's mindset, that's attitude and the coaches aren't telling them to go out there and turn pucks over. To me we need a new voice, we need to ... have the coaching staff have the message to the players and hopefully have the players receive that message and that's why the decision was made today."