Oedipus' tragic flaw generally is considered to be pride. A great deal of debate over the nature of Oedipus' tragic flaw exists among scholars throughout history.
Beyond pride, some scholars also maintain that Oedipus' tragic flaw is a tendency to turn a blind eye to the truth of what is occurring around him. In his classic work "Poetics," Aristotle determines that Sophocles's "Oedipus the King" represents the best example of a tragedy. He reaches this conclusion because he finds the trials and tribulations faced by Oedipus to be believable and reflective of what occurs in the course of real life.