How to transfer domain registration but not hosting?

Hello! Is it possible to change a domain registrar if I am not changing hosting?

My domain is registered, and the site is hosted, at Ionos. I am satisfied with the hosting cost but their registration, at $17/yr, can be improved. I am hoping I can transfer the registration to CloudFlare while keeping my hosting package at Ionos.

If this is possible, where can I find instructions? I know enough to get by but more than enough to get myself in trouble. =/

Thank you!

Maggie

P.S. I have other WP issues on the site which I intend to correct once I learn how. I also have this same issue with several sites as well as several unused domains I am looking to sell. So the $8/yr savings I gain by transferring registration to CloudFlare is multiplied by 10. I realize this is not relevant to my question, just filling in some backstory. =)

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