United Airlines follows rigorous hygiene protocols for their on-board amenities through their United CleanPlus program. In 2026, standard pillows provided in premium cabins (United Polaris) or upon request in Economy are professionally laundered and sanitized after every single use. Once cleaned, they are typically sealed in plastic to ensure they remain "factory fresh" until a passenger opens them. If you receive a pillow that is not sealed, it is perfectly acceptable to ask the flight attendant for a fresh, wrapped one. For added safety and comfort, many frequent flyers choose to bring their own travel pillows. United allows personal pillows as part of your carry-on allowance, and they do not count as an extra item if they are small or worn around the neck. While the airline's pillows are deep-cleaned, the high-turnover nature of international flight means that the "plastic seal" is your best guarantee that you are the first person to touch that specific cushion since its last wash.