Frontier is running a sale with some FR/NK like fares on some days some limited, is F9 struggling to fill planes??
Example TTN-FLL Feb 2nd only $29 one way ($79 fares available other days)
Example TYS-MCO Dec 16,19, 23 (Both ways), Dec 26 (MCO-TYS Only) $29 one way
Example DEN-AZA Whole bunch of days in Jan 2013 $36 each way
Example DEN-PHX Dec 8, 13 (to PHX) Dec 6 (to DEN) $38 each way ($58 fares Tues/Thursday January)