Car rental partners Cruise partners Additional partners Mileage Plus programs United Earn 3,000 bonus miles when you switch to MCI WorldCom. Existing MCI WorldCom customers are not eligible for bonus offer. See MCI WorldCom Web site for complete details. Find out about Mileage Plus mileage opportunities with MCI WorldCom .
All offers are subject to applicable standard rates and other restrictions.
Call the phone number listed within the special offer or your local United Airlines office.