Ian McCoshen scored with 8:44 left and top-seeded Boston College beat UMass-Lowell 4-3 on Sunday in the NCAA Northeast Regional final to reach the Frozen Four for the 11th time in 17 years.
Boston College (28-7-4), seeking its fourth NCAA championship in seven seasons, faces East Regional champion Union in the national semifinals April 10 in Philadelphia.
Thatcher Demko stopped 29 shots for Boston College.
Evan Campbell, Michael Kapla and John Holmstrom scored for UMass-Lowell (26-11-4), the region's second seed and Hockey East tournament champion.
McCoshen, skating in from the left point, beat Connor Hellebuyck with a wrist shot after taking a pass from defenseman Teddy Doherty. McCoshen banged his stick on the ice to get Doherty's attention.
Campbell's goal, which caromed in off BC defenseman Scott Savage, gave the River Hawks their first lead of the game, 3-2 43 seconds into the third period. Campbell was skating toward the side of the net and sent the puck out front.
Twenty-one seconds later, Fitzgerald took the puck at center ice and split two defenseman before tucking a backhander behind Hellebuyck.
Boston College moved ahead 2-1 when Arnold scored off the rebound of Gaudreau's shot with 2:26 left in the second period, beating Hellebuyck with a wrist shot. Gaudreau broke into the offensive zone, his shot was blocked by defeseman Zack Kamrass, but bounced directly to Arnold, who kicked it from his left skate to his stick.
The River Hawks tied it when Holmstrom banged in his own rebound with 1:16 left in the second.
The Eagles grabbed a 1-0 lead when Gaudreau set up Hayes 12:57 into the game. Gaudreau, who had three goals and three assists in BC's 6-2 semifinal win against Denver on Saturday, took a loose puck at center ice, broke in deep down the left wing and slipped a pass across the crease to Hayes, who one-timed it past Hellebuyck.
UMass-Lowell tied it on Kapla's power-play goal late in the period when he fired a wrist shot from the point that found its way through a group of players and slipped past Demko's glove.
West Regional Final
Minnesota 4, St. Cloud State 0
Minnesota (27-6-6) will face North Dakota in the Frozen Four semifinals on April 10. The Gophers are making their third trip to the Frozen Four since winning national titles in 2002 and 2003.
Kloos opened the scoring on a wraparound with 8:51 to go in the first period. Columbus Blue Jackets prospect Seth Ambroz and Kloos scored in the second period, and Florida Panthers prospect Kyle Rau capped the scoring with a power-play goal in the third.
Wilcox, the Big Ten player of the year and a Hobey Baker Award candidate, had his fourth shutout of the season.
Ryan Faragher stopped 12 of 15 shots for the third-seeded Huskies (22-11-5) before he was pulled in favor of freshman Charlie Lindgren, who finished with 19 saves.
Material from wire services was used in this report.