You need to use a Ferrystone to warp to one, and these are a very rare and precious resource. There are only a handful of Portcrystals in major locations across the entire game.
Dragon's Dogma 2 intentionally makes your life difficult - restricting game saves to prevent save-scumming, for example - the approach to fast travel puts realism and immersion over convenience.
Collection
[
|
...
]