Langevin started his National Hockey League career with the New York Islanders, winning four consecutive Stanley Cups.

Langevin played in the 1983 NHL All-Star Game and he was a member of the United States team at the 1981 Canada Cup.

Langevin served as head coach of the expansion Idaho Steelheads of the West Coast Hockey League (WCHL) during the 1997–98 season.

After a single season in Idaho, he returned to Minnesota and became a real estate appraiser and high school hockey coach.

Langevin, who wore #26 for the Islanders, was inducted into the United States Hockey Hall of Fame in 1993.