In Denmark, a 3 hour drive from Copenhagen airport (CPC) you’ll find kitespot Skæring Strand with nice flat and shallow water. In the summer there are many beach visitors so watch out. Most kitesurfers use the sides of the water in that case.
You can park your car at the spot and set up your gear in the grass. Launch at the beach or in the water.
Make sure to also check kitespot Ahl.