That depends on what version of Premiere Pro you're running. CC7.0.1 and earlier: yes. CC7.1 and later: no. For a little more on Flash support being removed: http://helpx.adobe.com/premiere-pro/kb/premiere-pro-cannot-import-flv.html
The current version of Adobe Media Encoder continues to support importing Flash content, so if you're on PPro 7.1 or later, then one option is to use AME to transcode to another format.