One-day sale ends tonight (Nov. 21). Fly to/from Washington DC from Dec. to Feb. (details below).
Sample Frontier fares, one-way prices – good in EITHER direction:
Book by 11:59 p.m. ET on Friday, Nov. 21. Travel Dec. 3 to Feb. 12 but there are blackout dates at Christmas and New Year’s and sale fares may not be available every date you want to fly. More details at Frontier. More flight deals on days you do want to fly at FareCompare.