Southwest is having a Thanksgiving fare sale; purchase through Nov 30. Fares valid every day except Friday and Sunday through February 9, 2010. Sample one way fares not including taxes and fees: Burbank to Vegas or Phoenix $59, NY to Houston $152, LA to Seattle $101. Some blackout dates. And remember Southwest has one of the best baggage deals around--first and second bags are FREE!
http://travel.southwest.com/specialoffers/offerDetails.html?id=28231316&...

Virgin America's Thanksgiving sale must be booked by Dec 2 with travel dates through Dec 17. Fares, before taxes and fees, through Dec 3 are cheaper, e.g. LA to Boston is $99 one way through Dec 3 and goes up to $149 one way through Dec 17.
http://www.virginamerica.com/va/search.do?method=promoLanding

Happy Adventuring!
AdventureGirl
www.affordableadventuresla.blogspot.com