To upgrade from Citi AAdvantage Platinum to the AA Executive card, visit the Citi AAdvantage upgrade page and type in the invitation code from your targeted mail offer, along with your last name, the last 4 digits of your Social Security number, and your billing ZIP code. Then, click “Get Started,” followed by the “Upgrade now” button to complete the upgrade.
Bear in mind, that if you receive a targeted upgrade offer, it does not...