How long did King of the Hill air?
King of the Hill (season 13)
The thirteenth and final season of "King of the Hill" originally aired Sunday nights on the Fox Broadcasting Company from September 28, 2008 to September 13, 2009. Four episodes from this season originally premiered in syndication from May 3 to May 6, 2010. Actress Brittany Murphy, who voiced Luanne Platter, died of pneumonia on December 20, 2009, five months before the final four episodes aired.
The King Family Show
Season One consisted of 22 hour-long episodes from January to June 1965
Season Two consisted of 17 half-hour episodes from September 1965 to January 1966