First Buffalo, then New Orleans and Salt Lake City, and now Denver. Southwest is going crazy with these 50% off sales. We're posting all the routes on our Denver page, but you can only book here. Travel Jan 6 through Mar 7 except over February school vacation primo travel dates (Feb 12-22 next year).
Here's the fine print:
Purchase December 8 through December 12, 2008, midnight central standard time. Blackout Dates Apply: February 12-February 22, 2009. If any portion of travel falls on a blackout date, the discount will not apply. Roundtrip travel is required on a Wanna Get Away fare from Denver to any Southwest Airlines destination. Offer applies to Southwest Airlines-operated, published, scheduled service. 50% discount available only on southwest.com/denver off the total amount of any roundtrip Wanna Get Away purchase before taxes and fees . Seats are limited and won't be available on some flights that operate during very busy travel times and holiday periods. Fares do not include federal excise tax of $3.50 for each flight segment. A flight segment is defined as a takeoff and a landing. Fares do not include airport-assessed passenger facility charges (PFC) of up to $18 and government-imposed September 11th Security Fee of up to $10. If combining with other fares, the most restrictive fare's rules apply. Fares are nonrefundable but (except for tickets purchased through our Group Tickets program) may be applied toward future travel on Southwest Airlines. Fares are subject to change until ticketed. Any change in itinerary may result in an increase in fare. Changes made to the itinerary after purchase may eliminate qualifications for this promotion. Standby travel requires an upgrade to the full unrestricted fare.