Board Thread:Show-Related Questions and Answers/@comment-10745887-20161024002352/@comment-7345267-20161024042928

The Land Without Magic is not easily accesible, as it's a land without magic; a land where magic is weak (in contrast to the Enchanted Forest, where magic can {apparent} be made from nowhere)

They allude to this in "The Return", when Rumple, shortly after losing Baeflire to the bean, is questioning the Blue Fairy about how he might follow his son. He specifically mentions a "realm jumper", and the BF basically says no.

It is easy to travel between lands where magic is prevalent. It takes extraordinary to get to lands where magic is all but dead.