In 2026, United MileagePlus miles never expire. United Airlines made the passenger-friendly decision to remove expiration dates from their miles in 2019, ensuring that members can save their rewards indefinitely regardless of how often they fly. This policy applies to all MileagePlus members, and there are no "activity requirements" (like earning or spending miles every 18 months) to keep the account active. This makes United's program one of the most reliable for casual travelers who may only fly once every few years. While the miles themselves stay valid, it is important to note that Premier elite status is earned on a yearly basis and does expire at the end of the program year (January 31st) if the required Premier Qualifying Points (PQP) and Flights (PQF) are not met. For "Million Milers," the lifetime status granted remains permanent. This "no-expiration" rule for miles allows for long-term planning, such as "pooling" miles with family members to book a major international award flight without the stress of a looming deadline.