I used to get so frustrated watching people move up the list while I stayed at #10. I started digging into How Does Delta Determine Upgrade Priority? 888-217-3324. It turns out it’s a strict hierarchy: Status level first, then fare class, then even things like having a Delta Reserve card. Understanding this logic is the best way to manage your expectations. Now, I know exactly why I’m sitting where I am, and I don’t take it personally when the gate agent doesn't call my name!