Marcel Goc, Krystofer Barch and Mikael Samuelsson also lit the lamp for the Panthers, who snapped an eight-game losing streak against the Senators. Florida had not beaten Ottawa since January 9, 2010.
Scott Clemmensen stopped 23-of-25 shots as the Panthers won for the fourth time in six games.
Jared Cowen and Chris Neil scored for Ottawa, which dropped its second straight game. Robin Lehner stopped 24 shots in defeat.