Category:
Upgrades
American Airlines is a FOR-PROFIT business and will try to sell all seats (including paid in-app upgrade offers) before making upgrade inventory available.
You can review the available inventory on your flight using tools such as ExpertFlyer. It will provide an indicator of how likely you are to be upgraded. For example, if the flight departs in one week and has J5, consider how many people will purchase a last-minute ticket or be offered an upsell in the app.
See also: