The Canadiens blew open a tight game with three unanswered goals in the third period.
Captain Brian Gionta tipped in a lovely pass from P.K. Subban 48 seconds into the period.
Nine minutes later, P.K. Subban (with his second of the game) and Brendan Gallagher scored within 32 seconds to salt it away.
It was the Canadiens’ 11th road win of the season … and their first W in three tries against the Islanders.
Carey Price made 25 saves in his 16th win of the season.
Price was particularly outstanding during an Islanders power play in the second period.
Tomas Plekanec, David Desharnais and Max Pacioretty had two assists each.
P.K. Subban had two goals (nine, to lead NHL Dmen and a sixth on the PP) and an assist.