Can I use MileagePlus miles for upgrades on flights?

Yes, MileagePlus miles can indeed be used for upgrades on flights operated by United Airlines. Members of the MileagePlus Program have the opportunity to use their miles to upgrade to a higher class of service, such as Economy Plus, Business Class, or First Class, depending on availability. Upgrades may vary based on the fare class purchased and the specific flight. Typically, members can request upgrades using their miles during the booking process, through the United Airlines mobile app, or by managing their reservations on the official MileagePlus website. It is important to note that upgrades are subject to availability and may not be applicable on all flights or fare types. Additionally, MileagePlus members may also take advantage of complimentary upgrades if they hold elite status within the program. For the most accurate and detailed information regarding specific flights, fare classes, and upgrade eligibility, it is advisable to visit the current MileagePlus webpage.