In its opening weekend the film grossed $7,803,347, ranking #4 at the box office alongside "Lakeview Terrace", "Burn After Reading" and "My Best Friend's Girl". As of December 2019, "Igor" has the 184th biggest opening weekend in a September month. The film then grossed $19,528,602 domestically and $11,218,902 overseas for a worldwide total of $30,747,504. In the UK, the film opened on 32 screens with a gross of £56,177 for a screen average of £1,756 and placing it at No. 20 in the box office chart. The mainstream release opened on October 17 at 418 screens and made £981,750 with a screen average of £2,348. This placed it at No. 3 for that weekend. The UK total gross is £1,110,859.