If your name has up to three characters wrong—first, middle, or last name—you can get it fixed. Full name changes (except for legal ones like marriage or divorce) aren’t allowed. You’ll need a valid ID (copyright or government issued), and you must request the correction at least 24 hours before departure. Corrections can be done via “Manage Booking” or by contacting support. https://sites.google.com/view/singapore-airlines-name/home