Frontier Airlines offers 1-way fares on 13 routes nationwide with prices starting at $29. (Click on "Frontier Airlines" in the top line to see this sale.) Coupon code "SAVE15" cuts up to extra 15% off, dropping prices to $27. That's the lowest price we could find for select flights by $12. This price is valid on flights departing from Atlanta, GA, (ATL) with arrival in Orlando, FL, (MCO) on June 10. Book this travel deal by May 28 for travel from May 30 through July 1. Other notable fares: All prices, dates, and booking details were valid at the time of publication.