I've killed everything in sight including back in the valley, I got the sigel from Ba'al, I haven't found the trigger to turn off the anti dragon zone around the harbor area, any help would be appreciated, is Aleroth in that area?
You have to use the teleporters to get into the harbor, once you are in there you will see a ramp leading up to the airship, on this ramp is a champion seated in a chair, go talk with him and he will offer you a ride to Aleroth.
As a note I am not sure if you have to repair all the zepplins first or not as I did that anyways before I asked to leave for Aleroth.
Or, more so the small details count. The game favors the highly observant.
This game is full of stuff that OPENLY obvious(ex some of the 'hidden' rooms), and things that are nearly impossible to get so..have a good time with it.