The Flintstones: Fred's Final Fling Due to a mix-up at the doctor's office, Fred believes he has only 24 hours left to live. Details Casts Videos Galleries Posters Title The Flintstones: Fred's Final Fling Release Date 1980-11-07 Runtime 00 Hours 24 Minutes Genres Animation Comedy Family Production Companies Hanna-Barbera Productions Production Countries United States of America Henry Corden... Fred Flintstone / Monkey ... Mel Blanc... Barney Rubble (voice)... Jean Vander Pyl... Wilma Flintstone / Pebble... Gay Autterson... Betty Rubble / Nurse / Tu... John Stephenson... Frank Frankenstone / Dino... Don Messick... Doctor / Fish #1 / Fish #... The Flintstones: Fred's Final Fling (Preview Clip) (Clip) Original Size (2863x1611) Original Size (500x750)