The Zadar airport - Zemunik (ZAD) is very well connected to bigger towns of Croatia and Europe and it is situated only 20 minutes by car far from Zadar!
You can come to Zadar from several directions and the highway A1, route Zagreb - Split, is the quickest and best of all. The best exit from the highway is at the knot Zadar east or Zadar west.
If you are coming from Rijeka, you can take the Adria road - route D8.
If you are coming from the direction of Italy, the shortest possible route is through Ancona by ferry to Zadar.
The journey lasts about 8 hours (departure is normally at 22:00 o'clock and arrival at 06:00 o'clock) and the advantage of such a trip is that it is much more pleasant and you are under less stress.
Zadar is the centre of north Dalmatia and very well connected with other Croatian and bigger European towns.