First off, there are absolutely no fish in Ontario. None, not a one, really...it's not worth it.
Seeing as you really want fly in. I've never used them so can't vouch for quality, however, colleagues went to Hastie lake and said they've never seen Smallie fishing like it. Blind River is about 7.5 hrs from Buffalo.
http://www.lauzonaviation.com/rates.php