- are no capital city portals in Dalaran or Shattrah.
- is more than one flight point in a zone.
- is a flight point in the starter towns just ouside your capital city (Kharanos, Goldshire etc)
- is a flight point at every quest hub I have seen so far
- you can fly in the (remade) old world
Wondering around Wetlands I found (alliance) flight points in the middle, and on the border with Arathi Highlands. This would have been so useful when I originally quested there, and will be usefull on my next alt.
But lets assume you are stuck in Dalaran. There is still one portal left - to the Caverns of time. For Hordies, take the portal, ride to Gadgetzahn and the flight point to Thunderbluff/Origmar. Similarly for Alliance, you can fly to Darnasus (admitidtly a long ride), or to Wetlands/Ratchet and catch the boat.
The flight points between some cities are short enough : Thunderbluff <-> Origmar and Ironforge <-> Stormwind, but the travel between other cities is hard? There is plan B
All the cities still have the portal to just out of the Dark Portal. From there, run to Outlands; to (but don't take) your flight point. Looking behind you, there is a portal to Stormwind (alliance) or (I assume) Origmar (horde). This makes the Exodar or Darnassus -> Stormwind run relativly short.
(This post was originally planned for last night, but the hotfix/listing of volatile water took precedence).
Very few of my toons (if any) will be hearthed in Stormwind