spongebob seasons By samantha carlos May 1, 1999 season one premiere Period: May 1, 1999 to Mar 26, 2011 spongebob season start to finish Apr 8, 2000 season 1 finale Oct 5, 2001 season 3 premiere Oct 12, 2001 season 2 finale Jul 26, 2003 season 2 Finale Oct 11, 2004 season 3 finale May 6, 2005 season 4 premiere Feb 19, 2007 season 4 finale Apr 13, 2007 season 5 premiere Nov 23, 2007 season 5 finale Jun 6, 2008 season 6 premiere Jul 18, 2009 season 6 finale Jul 19, 2009 season 7 premiere Feb 26, 2011 season 7 finale Mar 26, 2011 season 8 premiere