There are different sky maps that link to different locations. Some of them can't be found by another way. Some parts of the Sky Maps can only be accessed from a certain take-off location. Other areas will deny you entry until you have progressed further in the game. Attempting to go to a disallowed location gives the message: The wind is strong up ahead. Maybe it will die down if I come back later.
Creos found (≈ lvl35-39) : Ravian, Illuvian, Confal, Equaves, Aeraja.
Odla Cliff, Odla Secret.
Odla Town (same from Fifty Acre Woods), Plantae Village, Fifty Acre Woods Secret, Carbon City, Electron City.