Virgin America is getting in on the Cyber Monday action with a flight sale that has a lot of $39 one way fares. Book by Dec. 8  and travel between Dec. 3 and May 23, 2010. A few of these fares have gone on sale for about $10 less, but these are still great prices. If you make your reservation over the phone it costs an extra $15. Your first checked bag is $20 on Virgin America.

$39: SF-Vegas, SF-LA, SF-Orange County, SF-SD, SF-Seattle

$69: LA-Seattle

$109: LA-Boston, SF-Boston, SF-D.C., LA-D.C., SF-Ft. Lauderdale, LA-Ft. Lauderdale, LA-NY, SF-NY, Vegas-NY

Caveats: Some blackout dates apply, including Dec. 18-19, Dec. 26-27, Jan. 1, Jan 3, Feb. 12, and Feb. 15. Must be purchased three days in advance of travel.