Is there any spells for astral traveling?
None that I know of, but try to create one yourself. If you believe in it, it will work. :-)
Of course there are.
Usually you must join a coven or some Rosicrucian type group and take ominous oaths and play their game and still it is a couple years before they get to the Astral Travel stuff, which they treat like some sort of rare religious experience.
One author who revealed much of the hidden occult methods is Ophiel.
Try;
The Art & Practice of Astral Projection.