It was in the height of his glory at Covent Garden that Plançon was brought to the Metropolitan Opera in New York City by the impresario Maurice Grau. He debuted there on 29 November 1893, as Jupiter in Gounod's "Philémon et Baucis". He appeared in the seasons between 1893–97, 1898–1901 and 1903–08, and gave a total of 612 performances with the Metropolitan, including both operatic stagings and concert appearances, in New York and other American cities as part of the Met's touring ensemble. He sang Méphistophélès in "Faust" 85 times, and participated in the American stage premiere of Hector Berlioz's "La Damnation de Faust" in 1906, singing the role of that other famous French Mephisto. In 1899, he appeared in the inaugural performance of Mancinelli's opera "Ero e Leandro" 1899 (in the role of Ariofarne).