Can't give you a code because its a one time use code but check your email (and your spam folder) for a 25% off coupon good for the slow season (September-November).

*-The 25% discount on domestic fares applies to base fare only, not to fees or taxes, and requires purchase at FlyFrontier.com using the promo code certificate number shown. Promo code is valid for one time use only and is only valid for use on FlyFrontier.com. Discount applies to domestic fares. Tickets must be purchased by 11:59 p.m. Eastern time on May 23, 2014, for travel September 9, 2014 through November 19, 2014. All fare rules will apply. Certain flights and/or days of travel may be unavailable