- Click “Sign in/Join now” at the top right of any page. You will be taken to the member sign-in page.
- Click on the “Forgot MileagePlus account number?” link and follow the directions to have your MileagePlus® account number emailed to you.
- Tap the navigation symbol at the top left of any page. A navigation panel will slide open.
- Tap “Sign in/Join now.”
- Tap the “Forgot MileagePlus account number?” link and follow the directions to have your MileagePlus® account number emailed to you.