If you are looking to upgrade your flight to business class. You have to check if your flight is eligible for an upgrade by logging into your AAdvantage account. You can use an American Upgrade with Miles by selecting available flights in your booking dashboard. Make sure to have enough miles and confirm availability since upgrades are subject to cabin space. Once confirmed, your ticket will be reissued with first-class perks, including priority boarding, lounge access, and gourmet dining options.
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