VFR between 2 schengen countries
If I want to fly VFR between 2 schengen countries, apart from filing a flight plan, can I fly from one VFR non controlled airfield to another, or must I present myself at a customs airfield and go through formal procedures?
Example is to fly form Casarubios del monte (near Madrid) to a VFR airport non controlled airport near lisbon e.g. cascais