[3] Le Fontenay began her career at Covent Garden in London[4] and with the Opéra-Comique in Paris, before moving to the United States.

She toured across the United States, giving concerts and recitals, after her season with the Metropolitan Opera.

[3][11] A 1921 reviewer said that Le Fontenay gave a "rather unusual and altogether interesting" program and that she "displayed a voice of presentable quality and serviceable vocal equipment".

[17] After a divorce, she taught voice at the Ethel Walker School in Simsbury, Connecticut, from 1935 to 1943.

In 1914, Odette Le Fontenay married fellow opera singer Philippe Gustave Coudert (1879–1944), a baritone, in New York.