Weston led 2-1 after one quarter and 3-1 at halftime.
Sean Fumai led Weston with two goals. Austin Drimal, Richie Miller, Troy Flynn (pictured) and Eli Page each scored a goal. Grey Bradshaw-Mack and Spencer Turkel each had two assists.
Grant Limone made 15 saves in goal for Weston, which will play second-seeded New Fairfield in the semifinals on Tuesday at 5 p.m. at Newtown.