MileagePlus Customer Service

MileagePlus customer service

Visit the MileagePlus® Service Center for answers to common account questions. If you need additional help, there are two ways to contact us.


For quick answers to general questions or questions about your upcoming trip, chat with one of our agents. They're available 24 hours a day.

Call an agent

Our agents are available daily between the hours of 7:00 am - midnight (CT), within the U.S. and Canada. For international phone numbers, visit the United Customer Care Center.

Main phone numbers

1-800-421-4655 (toll-free)1-713-952-1630 (charges may apply)

Accessibility phone number

For customers who are deaf or use a teletypewriter: 1-800-323-0170