Frontier aircraft

Frontier Airlines is offering one-way flights for as low as $15 during its latest nationwide sale.

Travelers must book by Friday, September 6 for travel between September 8 and October 9, 2019, to take advantage. The ultra-low fares are valid for flights Monday through Saturday and require a minimum three-day advance purchase.

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However, travelers can expect to pay more on busier travel days and will have to purchase baggage and seat assignments at an additional cost.

Routes currently available starting from $15 include Atlanta to Orlando; Austin to Detroit; Cincinnati to Philadelphia and Colorado Springs to Las Vegas, among others.

Other popular vacation destinations on sale include Branson, Missouri; Denver; New Orleans; Chicago and Minneapolis.

Contact your travel agent or visit FlyFrontier.com/deals/flight-sales to filter deals by your departure city.

Denver-based Frontier Airlines has announced considerable expansion this summer and recently introduced a brand new Green Class service to meet the growing demand for sustainable travel.