Just to clarify the OWE rules (and these do change periodically), most OWE origins require return to the country of origin. One of the exceptions is Middle East, which allows any other "Middle East" country as the end point -- but not Europe. Without this rule origin CAI would require an end point in Egypt (and CAI is the only city served by OW). But the rule is for any Middle East destination, thus the ability to change the ticket to go to Qatar or wherever instead. The issue isn't the change fee for a re-issue, but rather where the endpoint can be. In this case the rules are rather advantageous.