Stahl won many prizes, including the Saltus Gold Medal of the National Academy of Design. His work appeared in Women's Home Companion, Cosmopolitan (magazine), American Artist, North Light, Esquire, the Chicago Tribune Magazine, Picture Post, Southwest Art and in some 750 stories in The Saturday Evening Post. He was featured in the 1976 television series Journey into Art with Ben Stahl, 26 half-hour programs consisting of lectures and painting demonstrations by the artist. Stahl was one of the founding faculty for the Famous Artists School.
One of his colleagues, the artist Norman Rockwell, once said, ''We are but illustrators, but Ben Stahl is among the masters.''Stahl also produced advertising artwork for various companies, and posters for several movies, including Ben-Hur. He illustrated a number of books, including The Innkeeper's Wife by A.J. Cronin, a limited edition of Madame Bovary, and the 25th anniversary edition of Gone with the Wind. Stahl wrote two novels: Blackbeard's Ghost was published in 1965 by Houghton Mifflin, and made into a movie by The Walt Disney Company in 1969; The Secret of Red Skull, a sequel to Blackbeard's Ghost, was also published by Houghton Mifflin.
Ben Stahl also served as an official U.S. Air Force artist and as an officer in the U.S. Air Force Reserve. In 1986, he guest starred on The Joy of Painting.