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.
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.