"When the puck goes in, the confidence goes up," Giroux said.
The Flyers are 3-3-1 on the road, 3-7 at home. They resume their trip Wednesday in Pittsburgh before playing in Winnipeg on Friday.
"When you're on the road, you forget about all the pressure and relax a little bit and guys spend a lot of time together," defenseman Luke Schenn said before the game. "You can be a little more gritty. When things aren't going so well, sometimes you overcomplicate things, so maybe this will help us simplify things."
The Senators, led by Cherry Hill's Bobby Ryan (9 goals, 19 points) have been one of the league's most explosive offensive teams. They entered the night with 53 goals - more than double the Flyers' total of 26.
On the flip side, Ottawa allows lots of opportunities. The Senators, who played Tuesday without injured defenseman Chris Phillips, have been surrendering more shots per game (37) than any team in the league.
Voracek scored a pair of second-period goals, including one on a terrific no-look feed from Wayne Simmonds.
Twenty-eight seconds into the second, Voracek scored on a wraparound to put the Flyers ahead, 2-0. About nine minutes later, he had an open net out front after Simmonds' deft feed, and his power-play goal made it 3-0.
"We worked on that in practice," said Voracek, who had been off to a slow start after scoring a career-high 22 goals last season.
The Flyers had two power-play goals for the first time this season. Brayden Schenn also scored with the man advantage.
Matt Read scored on a wraparound late in the first period to give the Flyers a 1-0 lead. Read pounced on a puck behind the net after Steve Downie's shot bounced off the glass.
Read's shot went off the skate of goalie Craig Anderson, who had missed the last three games because of a neck injury.
"I think the goalie might have been a little out of position, looking the other way and thinking the puck went all the way around the boards, but it just stayed behind the net," Read said after his fourth goal in the last eight games. "I was lucky enough to get the puck right on my forehand."
Downie, still sporting a black eye, had missed the previous four games with a concussion. Tuesday was his second game in his second stint with the Flyers, and he played with a full cage to protect his face.
Mason made 18 saves over the first two periods, including a stop early in the second period in which he did a split to deny Jason Spezza out front.
The Flyers equaled a dubious NHL record by scoring just 22 goals in their first 15 games. Since then, they have scored nine goals over their last two games, starting with Saturday's 4-2 win over Edmonton.