United Airlines has started unlocking the sliding privacy doors on its new Polaris business-class suites, roughly five months after the redesigned seats first entered service aboard the carrier’s Boeing 787-9 “United Elevated” Dreamliners.
According to Paddle Your Own Kanoo, the doors had been kept locked from the moment the aircraft began flying, pending certification from the Federal Aviation Administration. Regulators needed to confirm that a closed door can still be opened from inside during an emergency, even if the normal mechanism fails — a basic evacuation safeguard that applies to every enclosed premium suite.
Now that the sign-off is in hand, United can begin switching the doors on. The catch is that engineers have to activate them manually on each individual aircraft, so the rollout will be gradual. The airline has cautioned that it could take several days, or longer, before the entire United Elevated fleet has fully functional doors.
United first unveiled its United Elevated interior in May 2025. The cabin is built around 56 Polaris suites plus eight more generous Polaris Studio seats, the latter offering additional space and an upgraded onboard experience aimed at the very top of the market. Sliding doors were one of the headline features, giving each passenger a fully enclosed personal space — something United had never previously offered and a detail that has become increasingly common among premium long-haul competitors.
Enclosed suites with doors have quickly shifted from novelty to expectation in international business class. They give travelers privacy for working, sleeping or simply shutting out the cabin, and they have become a key differentiator that airlines lean on to justify premium fares on their most competitive long-haul routes. Launching a flagship cabin with the doors physically locked blunted some of that appeal, which is why finally activating them matters to United.
United is not the only carrier that has had to wait. American Airlines ran into the same certification hurdle on its Boeing 787-9 and Airbus A321XLR business-class suites. Per the report, the doors on American’s A321XLR were only certified last month and will not be active across the fleet until the fall, underscoring how the regulatory review has become a shared bottleneck for U.S. airlines racing to roll out door-equipped suites.
For United flyers, the practical upshot is straightforward: on 787-9 Dreamliners fitted with the United Elevated cabin, the Polaris Suite and Polaris Studio doors will gradually start working as engineers make their way through the fleet, delivering the private, enclosed experience the seats were designed to offer from day one.
Sources: Paddle Your Own Kanoo. Featured image: AI-generated by AviationShop. By Elena Vargas.
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