Transfer domain to another GoDaddy account
Guide To Moving GoDaddy Domain To Another Account

To get started with moving a GoDaddy domain to another account, you need the following details from the buyer:

  1. GoDaddy Account number
  2. Registered email address on GoDaddy

Once you have it:

  • Log in to your GoDaddy account.
  • Go to Domain Management.
  • Select the domain which you wish to transfer.

GoDaddy Domain panel
This will bring up domain settings and here you need to scroll down, find and click Transfer domain to another GoDaddy account

It will display a pop-up where you need to enter the other GoDaddy account holders login ID and registered email address.

Make sure to click on Keep the current nameservers for these domains or else GoDaddy will change the DNS to point to GoDaddy servers. If you have a site on that domain and its hosted on any 3rd party server, the site will start showing an error.
Enter the details and click Next:
Since you are not using the domain anymore, I recommend you select the second option which says: Use details from specified customer account. This will update the domain registration information using the new domain holders details.

On the next page, you will have to approve the TOS. Do so, and click Next.
This will save and update the changes. Now, if you go to your domain manager page, it will show the domain status as Changing accounts.
Now, check your email from GoDaddy and approve the domain transfer:

Similarly, the person who is receiving the domain name, will also receive an email and they have to approve receiving the domain name by clicking the link on email.

In some time, your domain will be transferred over to the new user.