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Frontier Airlines is offering 15% off all flights booked by end of day today, July 29, 2015, for travel August 17 through December 17, 2015. Use code SAVE15 to get the 15% off discount.
Fridays and Sundays are excluded from this offer and there are a few select blackout dates: September 7, November 21-25, November 28, November 30, and December 1, 2015. The good thing though is that a roundtrip reservation is not required, so you can use the discount on one-ways if the return happens to fall on one of those two days of the week or a blackout date.
For all those that can benefit, enjoy!