<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by cab747:
I bought my ticket on Orbitz 11/26 redeye PHX DTW LGA, 12/2 return 4:15PM JFK DTW PHX. It was only $241.50, so my guess that's NWs K class (cheap class)?</font>
Then you're better off taking a short run out of NYC while you're there because the fares have gone up as you've guessed.
There are at least a 1/2 dozen destinations out of NYC for ~$100.