 Spiegel went on to say that the episode was "fantastic".Mania.com's Stephen Lackey wrote that "Flashes Before Your Eyes" was an "episode has everything die hard LOST fans expect, riveting plot twists, foreshadowing, and as many questions as answers"

Critics did note that the episode did not provide many answers.Mac Slocum of FilmFodder.com wrote that he was "beginning to think the "Lost" producers have a different definition for the word 'answer'."