The United Airlines DOB Change Process | Flight-Ease guide is designed to help travelers correct date of birth errors on their airline reservations smoothly and without unnecessary stress. A mismatched or incorrect date of birth can lead to serious problems at check-in, security screening, or even boarding denial, especially when the details on your ticket do not match your government-issued ID or passport. Understanding the correct process—and acting early—can save you time, money, and frustration.