I wanna bump this up to see if anyone else has had any experiences with this.

Another friend booked a flight from ICN back to the USA and the charge isn't showing on her CC statement.

Either 1. I start travelin' every weekend outta ICN, or 2. Delta owes me, if this is a legitimate problem.

I just realized this happened to my wife on a domestic U.S. trip.

She was getting her expense reports in order and asked me to pull up her Delta recipts from her email. I happened to be online looking at our Delta Amex account at the time so I looked at the online statements to see when the flights were booked to make sifting through all of the Delta emails easier.

I could not find the charge for one of the flights. I went to the email and found the recipt. I went back to the Delta Amex statements and the charge wasn't there. The flight was taken over a month ago.