Spirit Airlines has a $24 off promo code coupon valid through 11:59 p.m. ET Oct. 10, 2011. Just book on Spirit.com by entering 24OFF(all caps, no spaces) in the promo code box to receive $24 off a round trip purchase for travel between Nov. 4, 2011 - Feb. 14, 2012. Technically, a few fares even drop down to a $0 *Free* airfare, but with taxes and fees (including Spirit's infamous "Passenger Usage Fee") nothing is ever really free. Nonetheless, there are some really good deals for no frills travel. These fares are valid for everyone. No membership is required.
Sample fares include (valid in reverse direction as well):
*All prices include Spirit's $18 Passenger Usage Fee ($38 International/Puerto Rico). Taxes/other fees are extra unless otherwise noted.*