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.
The Flyers are locked in a seven-game losing streak entering Wednesday's game. But it's been nearly as much of a struggle for the Capitals, who enter the game on a four-game losing streak of their own.
Shades of last season were on display in a two-goal second period for the Washington Capitals, who never looked back, handing the Flyers a 3-1 loss at Wells Fargo Center.
The Flyers have lost eight of the last nine games, including six coming on home ice. The homestand nears its end, as the Flyers take on the Chicago Blackhawks on Saturday afternoon.