Frontier Airlines EarlyReturns - Checking award availability

I just realized that seatcounter and some other bucket tool I was using a couple months ago didn't show S-class for any Frontier flight I checked. I'm wondering if it's a different letter across systems. I'm toying with the idea of transfering Amex MR>Frontier again, but there has to be a better way to check beforehand. I tried the ER phone number an hour or so ago and waited way too long for no answer. I'm flexible on the dates somewhat. DCA-LAS 8/1-3 and LAS-DCA 8/16-18. It'd have to be US-bad to not have anything, and I haven't seen many complaints at all here. Any idea on availability in this these ranges? I might try the phone again this week. The 15k level is just too tempting for me to not check specific dates.

I just did a quick check. There's availability on September 1 and Sept 5 (not on Sept 2, 3 or 4) from DCA to LAS. Return seat available on September 18 (not Sept 16 or Sept 17).

September? 8 means August. Hehe, thanks though. I wish I hasdn't left my cell phone at work so I could finally call and check myself. Those September dates are Saturday, Tuesday and Wednesday, which sounds about right for awards and better than Delta. I think I'll take the plunge and transfer half my 30k MR points (sign-up bonus thank you AMEX). Again, thanks.

Looks like I just wasted some miles. Gamble did not pay off! Can't find anything around my dates in August. *wince*

Apparently they've withdrawn all award seats prior August 21. Maybe if I had tried earlier... :(
Doubt there's a chance anything is going to open up again either. Ugh.