No doubt that the bunny and his friends have often traveled through time in the pages of four colors with many titles published by Dell/Gold Key/Whitman. The first such possible escapade that I’ve seen was a story called “Fiddling with the Future” in Bugs Bunny @50 in which some gypsy friends of Bugs can read the future.
We saw you reading the future with it over at the carnival!

Variants

(1)
  1. Looney Tunes/Merrie Melodies Comics, |pending byline|, in Bugs Bunny 50, August 1952.