Tyler Madden scored the winner early in overtime to give Northeastern a 2-1 win over Boston University to advance to the Beanpot Championship.
Northeastern will face Boston College, who defeated Harvard 2-1 in the other semifinal, in the championship game Feb. 11.
Patrick Schule scored the other goal for Northeastern.
Patrick Giles opened the scoring and Jake McBain netted the winner for Boston College in their upset over No. 17 Harvard.