Ovechkin tied Dionne when he scored a power-play goal at 2:37 of the third period to give Washington a 4-0 lead. He scored shorthanded at 12:01 to pass Dionne with the final goal of the 5-1 win.
"I just enjoy my time. Of course, it's a huge privilege being on that list, but how I always say, game by game, day by day," Ovechkin said.
The 36-year-old has scored 732 goals in 1,197 regular-season games during 17 seasons with Washington, which selected him with the No. 1 pick in the 2004 NHL Draft. Dionne scored 731 goals in 1,348 games in 18 NHL seasons with the Detroit Red Wings, Los Angeles Kings and New York Rangers before retiring in 1989.
"I knew you were going to pass me," Dionne said in a video played in the arena. "I knew at 700. But what's important of this whole thing, it's respect. You have a special quality. You're a pure goal-scorer. It's incredible."