Update: Some offers mentioned below are no longer available. View the current offers here.Frontier Airlines is currently having a sale, offering one-way flights starting at $29 from Atlanta, Georgia; Charlotte, North Carolina; Cincinnati, Ohio; Indianapolis, Indiana and Washington, D.C. for domestic, nonstop travel on select dates between August 22 and October 20, 2015. But it’s about to come to an end; tickets must be purchased by 11:59pm ET on June 24, 2015 — so act quickly!Last day to save with Frontier.If you’re looking for an easy summer getaway, give this sale a look — less than $60 round-trip is hard to beat.Head from Charlotte to Philadelphia for $56 round-trip.Maximize Your SpendingWhile Frontier may not be a part of a major alliance and these cheap flights won’t help toward any major elite status, you can still earn extra credit card points by using a card that maximizes airfare purchases, like 3x on airfare with the American Express® Gold Card or 2x on the Chase Sapphire Preferred. Check out this post for more on maximizing airfare purchases.Please report your success if you snag any of these!Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.[card card-name=‘Chase Sapphire Preferred® Card’ card-id=‘22125056’ type=‘javascript’ bullet-id=‘1’]