I just used FlyI's website and got $176 r/t for 11/12 to 11/14 from JFK
to Dulles.. Not sure if you have to have ISP
or not. If you do, Southwest can do it for about $180 from ISP
Since you know when you need to go. You know what airports work best for you. Pick an airline, go to their website and see what you can find. Its easy enough to book online on any of their websites. Your best bet is going to be FlyI, United, US Airways and Southwest I think.
I hope this helps...good luck.
You can't fix stupid.... - Ron White