How to use Font-your-face fonts with CKEditor?
This looks like a long awaited and unanswered issue - https://www.drupal.org/node/1234030 - however I have found a page that describes how you can manually updated your CKEditor fonts list. 

http://www.zyxware.com/articles/3692/drupal-how-to-add-fonts-in-ck-editor

I think this seems a bit too much, you would think that there would be a better system in place to support more fonts dynamically. There are apparently some hooks with the WYSIWYG module and Font Your Face - however as far as my knowledge goes CKEditor works better on it's own than as a part of WYSIWYG.