In yet another effort to drive traffic away from online travel agencies (or at least that's one way to look at it), Virgin America is offering two seats for the price of one for travel Nov 26 to Mar 19, with the obvious sold out dates over Christmas and the school vaca hols.
Use Promo Code DIGGNATION when booking on Virgin's site.
The fine print:
Promo Code discount is only valid for two guests traveling on the same itinerary. Offer ends at 11:59pm Pacific Time on December 7, 2007. Promo Code is valid for travel in the Main Cabin between November 26, 2007 and March 19, 2008. Blackouts are December 19, 2007 through January 6, 2008, February 14, 15 and 18, 2008. If travel is changed to a date outside of this window, or if itinerary is modified so that there are not two guests traveling on the same flights, Promo Code discount will become inapplicable, and guest will be responsible for any increase in air fare. The Promo Code may be used only towards newly-booked travel and may not be applied to prior bookings. Promo Code discount will be deducted off of base fare. Promo Code may not be redeemed for cash. Offer may not be combined with any other sale or promotion.