The disclosure relates to a flexible display device including: a display panel including a touch sensor, where the display panel is foldable with respect to a folding axis; a cover window disposed on a front surface of the display panel; and a front surface film disposed on a front surface of the cover window, where the front surface film includes a protection film, and a base film having a transverse direction, and the transverse direction is perpendicular to a direction of the folding axis.