Carter Hart made 40 saves for the Flyers (36-30-8), who are five points behind the Montreal Canadiens for the second Eastern wild card into the Stanley Cup Playoffs.
"I mean, we're just trying to win games," Hart said. "The end result is the playoffs, and that's what we want to achieve. We're just taking things in stride.
"It's crunch time right now, and we're just coming to the rink every day, just worrying about our group and everything going on here. All that excess noise, we can't control that, we can't control how other teams are playing, or any of that. We have to worry about ourselves and what's in this locker room."
WATCH: [All Flyers vs. Blackhawks highlights]
Sean Couturier had a goal and an assist, and Corban Knight and James van Riemsdyk scored for Philadelphia, which won for the second time in five games.
"They were buzzing, they controlled the play a lot in our zone," Couturier said. "But I thought we did a good job protecting the middle of the ice. They got a lot of cycling going on the perimeter. We did a good job keeping a lot of those shots from the outside, and [Hart] did the job there."
Chicago (32-31-10) is four points behind the Colorado Avalanche for the second wild card into the playoffs from the Western Conference.
"I think we played pretty good at times and maybe just couldn't find the back of the net," Blackhawks captain Jonathan Toews said. "Still pretty frustrating that it's another huge opportunity at home, and it's two in a row that we fall short. Still wouldn't say we played as good in our own building as we have on the road as of late.
"So we have to find a way to be better here. Yeah, can't allow ourselves to fall short and not get any points anymore."