There was only one goal needed in the third period, as the Capitals grabbed the lead with 10:41 to play and held on from there in a 4-1 decision over the Flyers aided by two empty-net goals.
The Flyers have won two of four games on the current five-game homestand. The Capitals come to town for the final game of the homestand on Wednesday night.
Sonny Milano scored with 2:58 remaining in the third, setting up overtime where Alex Ovechkin won it with his 790th career goal in a 3-2 loss to the Capitals that sent the Flyers streak to eight games.