I've looked at the threads in this lore subforum and couldn't find it being addressed; Where does the in-game time go when an in-game character travels with a ferry or an airship?
or phrased another way
How can a post-calamity ferry or airship travel from point A to point B instantly?

Before in 1.0, a character actually rode a ferry, which had to take time to travel from Limsa to Vesper Bay. But now that travel is instantaneous, along with all other ferries and airships. This means the time a boat would take to sail from any docks, regardless of the distance traveled, is always less than an Eorzea minute...

How is this possible? At first I thought perhaps they rode on the aether as well. However, they can't possibly be teleporting ships across the aetheryte network, since most of the docks don't even have an aetheryte node next to them.

And if any airship or ferry transportation is instant, why would the denizens of Eorzea even bother using aetherytes any longer? Why wouldn't they expand their airship network rather than relying on pre-placed aetheryte nodes around the world?