 " Hello Goodbye " is the series finale of the television comedy @-@ drama series , Ugly Betty . The episode serves as the 20th and final episode of the fourth season . It was written by series creator and executive producer Silvio Horta , and was directed by Victor Nelli , Jr . It first aired on ABC in the United States on April 14 , 2010 . Guest stars in this episode include Bryan Batt , Neal Bledsoe , Grant Bowler , Alec Mapa , Ryan McGinnis , Matt Newton and Adam Rodríguez . 
