Should be scared of the certificate? *Travel Certificate(s), including but not limited to (1) the validity period of one year from the issue date with no extension, (2) there will be no refunds, (3) the Travel Certificate(s) will not be reissued if lost or stolen, (4) the certificate may be redeemed for credit up to its face amount only towards the purchase of an electronic airline ticket(s), where eligible, from United, and (5) if the face amount of the certificate exceeds the cost of the ticket for which it is surrendered, any residual amount will be applied to the same Pin for use toward another ticket until either the original issued amount is depleted or the expiration date has been reached, whichever comes first.