Came across this very good deal....

http://travel.latimes.com/daily-deal...1027#more-1027


It pays to be part of Virgin America's EleVAte rewards program. Founding members received an offer yesterday for 25% off all Virgin America flights booked by December 7, 2007.

Deal: Don't cry if you're not a founding member. You can be my next best friend and use the promo code "ELEVATE25". The smart folks at Virgin America told us founding members to pass this deal on to our friends and family. If you want to join, you can still be a founding member by signing up before the end of the year (go ahead, it's free). There's no limit to the amount of tickets you can buy with this deal.

I was able to find a flight from Los Angeles (LAX) to New York (JFK) in March for $127 each-way. The total round-trip price came to $274 including all taxes. Flights from San Francisco (SFO) to San Diego (SAN) were only $29 each-way (before taxes). Note: the promotion is not visible from the website, enter the promo code when they ask for it at the time of booking.
More info and blockout dates at the link above.