"To inaugurate the new service, Alaska is offering introductory one-way fares of $99 for Portland-Boston and Portland-Orlando flights. Customers must purchase their tickets by Feb. 8, 2007, and travel by Dec. 14, 2007. The airline also is offering Double Miles for Mileage Plan members who travel by Oct. 31, 2007."
I have two trips to Orlando this year and I paid $450+ each because I'm flying out of through Seattle - both trips are before September. Anyhow, this is the official notice from Alaska, the cheap prices must be booked by 2/8/2007. Also if you are a mileage plan member, you'll earn double miles!!!
Wish I could have gotten my flights for this price....