Flight

Flight (Flying), ability — the creature can ignore obstacles when moving across the Battlefield, including other creatures and terrains. Creatures with this ability still can’t end their movement in Impassable areas.
Flight – the unit can move ignoring obstacles. And run into Difficult Terrain without getting a Fatigue token. If a unit with Flight stops its movement at a certain terrain, it can use its properties. This unit cannot stop its movement on hexes of other units and impassable terrain.
Passive ability – The creature can ignore obstacles, including other creatures and terrains, while moving across the Battlefield. Nevertheless, the creatures with this ability cannot end their movement on Impassable areas or on the hexes with other creatures.