for how many seasons did gilligan's island air?
Gilligan's Island (season 3) The third and final season of the American comedy television series Gilligan's Island commenced airing in the United States on September 12, 1966 and concluded on April 17, 1967 on CBS. The third season continues the comic adventures of seven castaways as they attempted to survive and escape from an island on which they had been shipwrecked.