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Frontier Airlines is offering 90% off flights during this two day sale! Book through, September 13th for travel through December 16th, but excludes Friday and Sunday travel. Blackout dates = November 18-28. Use promo code SAVE90.
While Frontier Airlines is definitely a low cost airline and every little thing costs extra, such as carry on bags, seat selection, etc., you can definitely snag an incredibly cheap fare. I personally was able to find flights from Providence to Florida for about $71 roundtrip! If you can pack light this can definitely be an incredibly inexpensive way to travel for a desired flight!