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Frontier Airlines is offering a coupon code for 90% off all flights booked TODAY! This is for flights flown between August 28 and October 4, 2017. This is valid for all flights except those that depart on Friday and Saturday. Use coupon code SAVE90. Blackout dates include: September 4-5. And check out the excluded routes here.
Unfortunately though the 90% off is not taken off taxes and fees, which can sometimes be the bulk of the fare. So the actual amount that is discounted is not as high as it appears to be. This also works on DenDeals fares, so if you are a DenDeal member you can take advantage of both discounts. Overall, a great offer for those that are able to take advantage.