Upgrading to First Class on American Airlines in 2026 can be achieved through several different channels depending on your budget and loyalty status. For AAdvantage status members, upgrades within North America are often complimentary and requested automatically, clearing as early as 120 hours before departure for Executive Platinum members. For others, you can use AAdvantage miles plus a cash co-pay (starting at 15,000 miles + $75 for domestic routes) to secure a higher cabin. If you didn't book with miles, American often presents "Load Factor" (paid) upgrades in their mobile app or at check-in kiosks, which can range from $50 to several hundred dollars. Additionally, high-tier elites may use "Systemwide Upgrades" earned as Loyalty Point Rewards. It is worth noting that Basic Economy tickets are generally ineligible for mileage upgrades, so if you are aiming for the front of the plane, you should book at least a standard Main Cabin fare to keep your options open.