Quote Originally Posted by WhiteArchmage View Post
The sea voyage between Eorzea and Hingashi is stated to last about 3 months (but I don't have the quote on that at the moment, sorry) yet we do the same trip both ways several times during 4.0 alone, even if the WoL can canonically teleport, but the other characters can not.
Teleport and Return do exist in-story, as they are occasionally referenced. Iceheart uses Teleport in the cut scene after Snowcloak, Thancred is stated to no longer be able to use either spell after his possession by Lahabrea, and Yugiri mentions that only a small fraction of the Doman troops can teleport to reinforce the Alliance at the Ghimlyt Dark and the rest will have to travel by sea. The implication is that not everyone has enough personal aether reserves to use them safely, but they do exist.