"While generally determined by the distance between two planets, hyperspace travel times between two locations seemingly close to one another could be drastically extended by the need to navigate around stellar hazards, such as asteroid fields and nebulae.
An example of this is the journey from Coruscant to Alderaan. In terms of distance, Alderaan was situated close to Coruscant—the former at approximately 5,000 light years from the Core, the latter at approximately 10,000. However, during the Imperial era, such a journey required roughly sixteen hours of travel due to a section of the route passing through a part of the largely-uncharted Deep Core, where navigation was difficult as a result of the gravity wells produced by the congregation of stars. Ironically, then, it was actually faster to get from Tatooine to Alderaan on the other side of the galaxy. In some cases, intragalactic travels could take days (note: The galaxy is about 120,000 light years across), depending on the distance between two planets and the obstacles between."
So it would seem that travelling around 10,000 light years (my estimation of the distance between Coruscant and Alderaan based on a cursory glance at the Star Wars Map Official Map of Star Wars Galaxy) in 16 hours (or 625 light years/per hour) would be considered slow. A light year in Star Wars equals about 9.5 quadrillion meters, so a ship in hyperspace could travel at least about 6 quintillion meters per hour.