The Zadar airport connects cheap carriers flights (in the summer season especially) from London and quite a few other European cities (Bruxelles, Billund, Marseille, Dusseldorf, Franfurt, Karlsruhe, Oslo, Stockholm, Dublin, East Middleands with Ryanair, Paris with Croatia Airlines, Stuttgart, Cologne, Berlin with TUIFly and Germanwings, Munich, Frankfurt, Dusseldorf, Berlin with Easyjet - yes, all these!) For more direct info, check Skyscanner
This transport link is a great thing which happened to Zadar as it is now so easy to reach from the big cities all around Europe. You can also catch a connecting flight from Zagreb or get a ferry from Ancona in Italy. It is a 1.5 hour drive from Split or a 3-4hour drive from Rijeka/Opatija. Town is also well connected by ultra modern highway, just few hours away from Austria, Hungary or Italiy.