"Save 50% Now
Porter's best-ever offer.
The party is wrapping up with our last and biggest regular promo code sale.
Book online or contact your travel agent. Use promo code WOW50 by September 7, 2011. Travel by December 15, 2011. New bookings only. Cannot be combined with any other promotions or programs."
Never flown with them, but I have only heard great reviews.