Today only, Frontier Airlines offers 1-way fares on 17 routes nationwide with prices starting at $49. (Click on "Frontier Airlines" in the top line to see this sale.) That's the lowest price we could find for select flights by $76. This price is valid on flights departing from Atlanta, GA, (ATL) with arrival in Austin, TX, (AUS) on May 16. Book this travel deal today for travel from May 9 through June 20. Other notable fares:

Houston (IAH) to Phoenix (PHX) from $58

Washington D.C. (IAD) to Las Vegas (LAS) from $69

Orlando (MCO) to Las Vegas (LAS) from $99

click here to see all Frontier Airlines fares

All prices, dates, and booking details were valid at the time of publication.