Its theatrical run expanded on August 15, 1980 to New York City and Los Angeles, and included select midnight screenings. During its opening week runs in New York City and Los Angeles, the film earned a combined $1.3 million, and marked Avco Embassy's highest-grossing Los Angeles opening to date, as well as breaking weekend records in Philadelphia and New England. The film continued to prove financially successful through Labor Day, earning $2.1 million over the holiday weekend. By October 1980, the film had grossed a sum of $12 million. The film premiered in Canada through Astral Films on September 12, 1980.