For years, the academic circles have made a very hot debate about what constitutes the tragic defect of Oedipus. It is impossible to provide a clear answer to this question, but you can check some possibilities.
The first is what Greeks call pride or arrogance. When Oedipus visited Delphi 's Oracle, she told him that one day he would kill his father and marry his mother. Naturally, like everyone, Oedipus was shocked at this hearing. But I can not understand that he challenged fate and chose to show extraordinary arrogance in the process. Ironically, his proud action ultimately led to his disappointment. It was because Edips had refused to return to Corinth and he finally met his biological father, Lieus, who later killed him.
Edips' tragic defects may get irritated. Eventually, anger made Oedipus kill his father. However, there are two problems with this method. First of all, anger led directly to the death of Leus, but it has nothing to do with another part of Oracle's prophecy. Eedipus marries his mother. Indeed, this is more related to the arrogance of Edpsus when solving the mystery of Sphinx, and he received the Jackasta's marriage award for it.
The second problem of anger incidents is that it is reasonably based on self-defense that Edps had murdered Lieus. Of course, most viewers watching Oedipus Rex will reach the same conclusion. Ultimately, Oedipus is king like Leus himself, so if necessary it will protect his honor with power.
Overall, arrogance seems to be the most likely answer to your question. However, this problem has not been solved yet. It is important to read the script carefully and decide yourself.
First of all, as you said, Edpe's tragic flaw is his pride. In fact, I would even say that the whole game was driven by Oedipus's pride. Considering this, it seems that Edips did not solve his pride. However, there are several signs that Edips had finally noticed his pride. First of all, at the end of the script, Edpsus knew clearly that he was the person who committed a crime. With this in mind, he was obliged to deal with his pride. He can not do anything. More importantly, he accepted fate. With the other two Theban dramas, you can see this more clearly. In the last game, he became a blessing to Athens. He is a wise man now.
According to Aristotle, the protagonist of the tragedy must have a tragic flaw that ultimately caused him to destroy. It is his pride that Oedipus of Sophocles' King Oedipus brought about his tragic bondage. When the pride of Oedipus improved him, there were three examples: when he left his adopted parents in Cornice, the second was Oedipus when the second opposed Kryon Ask a messenger to tell him everything that knows who his real parents are. When he left adoptive parents in Corinth, Edeps was very proud. Edeps passed away after being told the fate of the old prophet. The prophet told Oedipus that she would marry her father some day and marry her mother. Odds decided to leave Cornice because of concern. By doing so he opposed the gods, he said that he would not let this happen to him, he dominates his own destiny