Froese of Winkler, Man., scored his very first NHL objective as a Flame and his first in practically three years.
From his backhand, Froese deflected a Juuso Valimaki shot from the point over Hellebuyck's glove at 13:34.
Mangiapane earned his second goal in three games backhanding a Mikael Backlund feed past Hellebuyck's pad at 5:31 of the second period.
Ehlers scored the video game's first objective 3:23 of the second on a Winnipeg power play. He beat Markstrom top corner with a wrist shot from the top of the face-off circle.
Neither club scored on their lone power-play chance in the very first duration, in which the hosts outshot the Jets 11-10.
The Flames head to Vancouver for 3 games in 5 days versus the Canucks starting Thursday. The Jets remain in Ottawa to face the Senators Thursday and Saturday.
Blake Wheeler requires one objective to pass Bryan Little (217) for the second most goals in franchise history. Ilya Kovalchuk is the leader (328 ).
Elias Lindholm scored a late game-winning goal for the Calgary Flames in a 3-2 win Tuesday over the visiting Winnipeg Jets.
Andrew Mangiapane and Byron Froese also scored for Calgary (6-5-1), which beat the Jets in regulation for the very first time in its 5 meetings this season.
Calgary goaltender Jacob Markstrom stopped 25-of-27 shots for the win.
ENJOY Both Dubois and Laine had asked their respective clubs to trade them. The Blue Jackets drafted Dubois third total in the 2016 entry draft.
The Jet dealt with the Flames in a fourth straight game after going 2-0-1 at home versus Calgary last week.
It's the only time this season Winnipeg sees the very same opponent 4 video games in a row. Calgary was coming off a 6-4 win over the Oilers.
Jets defenceman Nathan Beaulieu was serving a charge for high-sticking Johnny Gaudreau in the face when Lindholm beat Hellebuyck in between the pads for the winner.
Ehlers knotted the game 2-2 at 15:45 of the second duration on a 2-on-1 with Mark Scheifele. Ehlers put a wrist shot over Markstrom's right pad as the goalie stretched for the conserve effort.