The Hornets blanked Saranac Lake Placid to capture the New York Section VII championship inside Ronald B. Stafford Ice Arena on Sunday.
PHS put one goal on the board in each period to top SLP 3-0 and hoist championship gold.
Sophomore goalie Ava Julian stopped all 24 SLP shots in the shutout victory, and freshman forward Avery Holland led the offense with two goals, including the game-winner.
Senior forward Taylor Hackett added a deflection goal in the third to seal the victory and send her team to Buffalo for the Regional Playoffs.
Plattsburgh will take on Section III winner Skaneateles on Friday, February 8 at 8 p.m. in the semifinal matchup in the Harborcenter.