As of 2015, United Airlines continues to offer the MileagePlus frequent flier program to its customers. This program is affiliated with Star Alliance; members can earn and use points with many airlines within the alliance.
Passengers who fly with United and its affiliate airlines are eligible to earn MileagePlus points. They can sign up for free at any time before an eligible flight to ensure that they receive mileage credit. The MileagePlus website offers a variety of other ways to earn points, including credit card membership, shopping, hotel stays and car rentals. Members can use their points on travel or other rewards.