If you have more than one speed, such as your walking speed and a flying speed, you can switch back and forth between your speeds during your move. Whenever you switch, subtract the distance you've already moved from the new speed.
You can move through a nonhostile creature's space.
You can move through a hostile creature's space only if the creature is at least two sizes larger or smaller than you.
Another creature's space is difficult terrain for you.
Whether a creature is a friend or an enemy, you can't willingly end your move in its space.