Vikings: Season Four Trailer Released by History by Jessica Pena, January 5, 2016 The Vikings are coming! History has just released a new trailer for season four of their historical drama, Vikings. Season four premieres on February 18th, at 10 p.m. The Medieval era-set drama was renewed for a fourth season back in March. And just last month, we reported that History had increased the episode count for season four to a total of 20 episodes. Watch the new trailer below: What do you think? Are you a fan of Vikings? Will you watch season four?