Jets blank Senators to end losing skid
Mason got his 23rd career shutout. Chris Neil and Bobby Butler both put shots off the crossbar late in the third.
Craig Anderson, who was selected as the NHL's first star of the week earlier in the day, stopped 33 shots for Ottawa, which ended a four-game winning streak.
The Senators, who were shut out for the first time this season, lost in regulation for the first time in 10 games (8-1-1).
Bogosian missed his third straight game because of a lower-body injury. Byfuglien has been sidelined for nine games with a knee injury.
Slater scored his first goal in seven games since returning from an upper-body injury that sidelined him for a pair of games. He tipped Chris Thorburn's shot past Anderson for his eighth goal.
Enstrom scored his second goal - his first since Oct. 19 - to put Winnipeg up by two 6:48 into the second. The Swedish defenseman took Kyle Wellwood's pass and drove a slap shot along the ice through Anderson's pads while Winnipeg captain Andrew Ladd jumped in front of the Ottawa goalie as he provided a screen.
Mason's closest call before the two shots off the crossbar came 5:14 into the third. A video review confirmed that he kept the puck from crossing the goal line after Ottawa captain Daniel Alfredsson's shot off the end boards bounced back toward the net off Winnipeg defenseman Mark Stuart's left skate.
Ottawa defenseman Matt Carkner and Stuart got fighting majors.
NOTES: The original Winnipeg Jets' last win over Ottawa was on Feb. 8, 1996, a 6-2 victory at the old Winnipeg Arena. ... The Senators begin their second six-game road trip of the season Tuesday night in Toronto. ... The league's third star one week earlier, Anderson took the top honor Monday after going 3-0 with a .970 save percentage, including his first shutout of the season.