Once you legally change your name with the Social Security Administration, your passport is no longer valid; the only way to restore its validity is by updating your name with the State Department, too. If you have certifiable proof your name change, t his can be done quickly and easily through the mail.
Can I fly with my maiden name on my passport?
If that is your maiden name or 2nd or 3rd married name, then be sure to use that name for an international airline ticket. You may continue to travel internationally under the name listed on your passport as long as the passport is unexpired and valid for 6+ months following your return date on your airline ticket.
Can you transfer flight credit to someone else?
Visit your airline’s website. Look for the “Reservations” or “Tickets” section to find information about their cancellation and transfer policy. In some cases, you may be able to transfer the ticket to another person or pay a fee to cancel the ticket and have it reissued in someone else’s name.