FAQs

  • We don’t want to complicate the sign-in process, but your account security is important to us. You need to have a strong password and security questions.

    You'll be asked to answer your security questions the first time you sign in on a web browser and device that we don't recognize. Examples of web browsers include Google Chrome, Internet Explorer, Safari and Mozilla Firefox. If you sign in from a new browser, you'll be asked your security questions even if you've signed in from the same device before.

  • If you've forgotten your MileagePlus number, go to the Forgot Your MileagePlus Number? page. If you've forgotten your password, go the MileagePlus Password Reset page. If you're still having issues, you can contact the MileagePlus Service Center for assistance.

  • Account verification protects against unauthorized access and allows us to recognize when the MileagePlus account is being safely accessed by its rightful owner.

  • When you login to or the United app you may be prompted to verify your email or phone number.

    • To do so, select the email or mobile phone number associated with your account which you would like to designate as "primary" (the account you have most frequent access to).
    • After selecting "verify", you will be directed to check your email or mobile phone for the verification link.
    • Simply click the link to confirm the verification message has reached the correct email or mobile phone number, and you will be redirected to a window confirming your verification is complete. Remember: never click on an authentication link if you did not request it.

    If you choose to not verify your account during login, you may return to the verification process at any time by going to your profile and clicking "Verify" next to your email or phone number.

  • When you call us, you'll be asked for the first five characters of your password when using the voice recognition system — you'll just need to say them out loud. If you speak with a United representative, you'll be asked for your security answers.

  • The "Remember this browser on this device" option uses cookies, which are small bits of information stored on your computer in your browser. If your browser is set up to remove cookies regularly — many workplaces have their employee's browsers configured this way — the "Remember this browser on this device" option will not work.

  • In order to access your account on, the United app and some of our partner apps and websites, we require that you have a strong password, and for instances when we do not recognize your computer, we require additional security questions.

  • Many websites use cookies to personalize and improve your website experience, but if you’re having issues with a site's functionality it sometimes helps to remove them. Please note that removing cookies will mean you need to enter your security questions the next time you sign in to, even if you’ve selected the "Remember this browser on this device" option.

    The way to delete cookies varies by browser type, so you may want to find instructions for your specific browser. In general, you’ll need to go to your browser settings, find your advanced or privacy settings and then look for an option to clear cookies or browsing history.

  • If questions are answered incorrectly, we'll protect your account from further sign-in attempts by locking it. You'll need to unlock it by selecting the unlock link in the message we send to the email address in your account or by calling the MileagePlus Service Center.

  • We conducted a lot of research into the security issues our customers face and found that the majority of issues can be traced to computer viruses that record typing. This is called "keystroke logging." We purposely chose to use predefined answers to protect your account against this type of intrusion.

  • If security questions are answered incorrectly, we want to protect your account from further sign-in attempts so that someone can't force their way into your account. If your account is locked, you'll need to unlock it by selecting the unlock link in the email we send to the email address in your account or by calling the MileagePlus Service Center.

  • Yes. As long as you have an active MileagePlus account you’ll be able to earn miles. If you're unable to sign in when you're booking a reservation on or the United app, you can add your MileagePlus number when you're entering the passenger information for your ticket.

  • No, your answers and your password are encrypted and will not be used for any purpose other than authenticating your identity. Nobody will be able to see or review your questions, answers or password.

  • We know that our questions are unique, and that's part of the point — it's more secure to have questions that don't cross over with your profile on other websites. And a lot of questions on other websites, such as your mother's maiden name, can be easy to figure out using a little Internet research.

  • We tried to create questions that have memorable, unique answers, but if you really don't think you can remember your answers, it's perfectly fine to save them to a password manager. We hope you can find questions that you'll remember, though – we're working on adding more of them. You can go back and change your questions and answers to add the new ones, if you want. Please keep in mind that you'll have to update all of your questions, not just one or two.

  • We spent a significant amount of time and research trying to represent a wide variety of answers, but we know that we weren't able to include every possible preference.

  • In order to protect the security of your account, we do not display your saved questions and answers in your account. But you can always update your questions and answers by selecting "Change Security Questions" on the Profile page of

  • It’s rather easy for others to figure out your email address, but figuring out your MileagePlus number is more difficult. We understand that it can be a little more effort for you to remember, but it does a much better job of protecting your account.

  • You should be able to set a new password online. If you receive a message that your account is locked, you can contact the MileagePlus Service Center for assistance.

  • Yes, just sign in to your MileagePlus account and then go to the "Preferences & settings" under the “Profile & preferences” section of your account. Please change your password frequently and do not use the same password that you use for other online accounts.

  • If you notice unusual activity on your account, change your MileagePlus password immediately and contact the MileagePlus Service Center.

  • We use your email address to contact you about administrative, security or operational issues – for example, if you forget your password or lock your account.

    We may also use your email address for marketing purposes as shown in your MileagePlus email subscription preferences. You can change this by signing in to your MileagePlus account and then going to "Preferences & settings" under the “Profile & preferences” section of your account.