In 2026, getting upgraded to United Polaris (international business class) is highly sought after but strictly regulated by capacity. There are four primary ways to move from Economy or Premium Plus to a lie-flat Polaris pod. First, PlusPoints are the gold standard for United Premier Platinum and 1K members, allowing them to request upgrades on international flights. Second, MileagePlus Upgrade Awards allow any member to use a combination of miles and a cash co-pay (typically around $300–$600). Third, United often offers "Day of Departure" paid upgrades in the app during check-in, which can sometimes be significantly cheaper than the original fare difference. Lastly, passengers who have purchased United Premium Plus are prioritized at the top of the upgrade list for Polaris. It is important to note that "complimentary" upgrades (CPU) do not exist for Polaris; you must always use miles, points, or cash to secure a seat in the premium international cabin.