You can modify your telephone number or mailing address in your Flying Blue space. All you need to do is log in and go to the Personal Information section of your profile.
If you'd like to modify your name, title, date of birth, or e-mail address, be it to correct an error or change your status, simply send a message to Flying Blue customer service. Please log into the Flying Blue website and use the contact form (located in the FAQs & Contact us section). You may be asked for proof of your identity (copy of ID, French family booklet...).