Extant is a TV show on American national television from CBS with an average rating of 3.1 stars by WatchTVOnDemand.com's visitors. We have 24 episodes of Extant in our archive. The first episode of Extant was broadcast in September, 2015. Did you miss an episode of Extant but don't you wan't that to happen in the future? Please set an alarm and add Extant to your favorites, so we can remind you by email when there's a new episode available to watch. Completely free: handy!