No permanent one, but of course, if a mage is around of the appropriate level and experience, a temporary one can be created.

Always remember to tip your mages what you think the portal was worth... and that should at LEAST be the reagents that were used up in making the portal!

If there are no mages around, you can get on a boat to Northrend at Stormwind Harbor or a Zeppelin in Orgrimmar and see Where is Dalaran?