If your name or surname has changed, but the ticket is issued on the old data, you should contact the place of purchase to make changes to the Booking.
Correction is possible only if there is an official document confirming the change.
If you purchased your ticket online or via Air Astana mobile application, or if the agency where you purchased the ticket has closed down or is temporarily not operating, you must fill out this web form no later than 3 working days before departure, attaching a scanned colour copy of your new passport and a scanned colour copy of the document confirming the change of family name or name (marriage certificate, divorce certificate, etc.).
This procedure can also be done in Air Astana's sales offices. The addresses are available at the link.
If the ticket was purchased under the old name or surname after the registration date of new documents, the application to change the data is not accepted you must issue a return ticket with the old data and buy a new ticket.
Changing the surname or name of a passenger is possible only on flights operated by Air Astana. There is no extra charge for correcting a name or surname error.
Changing your name is not allowed after you have partially used your ticket (i.e., when you have already flown it part of the way).