https://supportcommunity.milestonesys.com/s/question/0D5bH00000ZFwKDSA1/-united-check-in-247refundpolicyknow-more-travel-guide?language=en_UShttps://supportcommunity.milestonesys.com/s/question/0D5bH00000ZFwKDSA1/-united-check-in-247refundpolicyknow-more-travel-guide?language=en_UShttps://supportcommunity.milestonesys.com/s/question/0D5bH00000ZFwKDSA1/-united-check-in-247refundpolicyknow-more-travel-guide?language=en_US