We often talk about the Magick performed at Rituals, such as charging objects and manipulating energy to Cast. These are very real powers that a Practitioner can attain by studying the Universal Laws and other Laws of Physics, experimentation and much practice, and sometimes coupled with inherent ability. But when it comes to the Craft, the power that many people associate with Witches is that of Transvection, or flying.
As you just read this last sentence, you are likely imagining the stereotypical Witch, in a black cloak with a tall hat (perhaps even with green skin and warts on her long nose) flying on a broom stick across the sky. Unless kept as a very deep secret, this type of Transvection is undoubtedly a creation of the mind.