When does Family Guy return?

Family Guy is an American animated sitcom created by Seth MacFarlane. The series premiered on January 31, 1999, following Super Bowl XXXIII, with the rest of the first season airing from April 11, 1999. Set in the fictional city of Quahog, Rhode Island, the show exhibits much of its humor in the form of metafictional cutaway gags that often lampoon American culture. A spin-off series, The Cleveland Show, featuring Cleveland Brown, aired from September 27, 2009, to May 19, 2013.
The primary setting of Family Guy is Quahog, a fictional city in Rhode Island that was founded by Peter's ancestor, Griffin Peterson. MacFarlane often borrows the names of Rhode Island locations and icons such as Pawtucket and Buddy Cianci for use in the show.