Friday, December 21st, 2012, 1:30 pm
Update, 1:45pm: DEAD!
-Bookable now on Orbitz, which offers regular mileage earning, price assurance refunds and more importantly free cancellations until 11pm ET the day after you book. (I.E. Book at 1:00am and have 46 hours to cancel for free), or you can book direct from the airline.
HT: KINGSFAN3344, via Twitter