A flexible display window includes a flexible base layer including a flexible resin, a first silica nano particle coating layer including full-type silica nano particles, where the first silica nano particle coating layer is disposed on the flexible base layer, a flexible hard coating layer including a flexible hard coating resin, where the flexible hard coating layer is disposed on the first silica nano particle coating layer, and a second silica nano particle coating layer including hollow-type silica nano particles, where the second silica nano particle coating layer is disposed on the flexible hard coating layer. Thus, the flexible display window can enhance impact-resistance of a flexible display while reducing reflectivity of the flexible display.