Sunny Swift Edition 19 will cover the subject of airspace complexity. While developing this cartoon we through it would also be useful to provide information on the websites at National Level for flight information and planning resources - this can be found in the attached document, it is not fully complete but will add to that as we get more information from the National Authorities.
You can also access the Eurocontrol AIS Database at this here - requires creation of a login.
We also list here the main Apps/ tools available to help with flight planning - if we missed any of them add them in the comments and we will update this article accordingly. More information about these different Apps are available in the Eurocontrol link here.