Unless you snuck into that buy-one-get-one-free deal from Alaska Airlines, it's tough to find an airline ticket for any cheaper than this. Low-cost carrier Frontier Airlines has brought back its Buck Fares deal. For flights in the sale, all you pay is $1 plus taxes and fees for the fare in each direction.
The actual price comes to a little less than that. In the example below, the fare is just $.93 and the final round-trip ticket price is $38.60 with all the fees and taxes. Hardly a buck in the end, but still a damn good deal. To get in on the sale, you need to purchase before midnight on February 20 and fly before April 4, 2019. You'll also need to purchase at least seven days out, and you won't find these prices on any Sunday flights.
Departure cities include Atlanta, Birmingham, Charleston, Denver, Greenville, Huntsville, Jacksonville, Las Vegas, Little Rock, Memphis, Miami, Nashville, Norfolk, Orlando, Palm Springs, Philadelphia, Raleigh, Reno, St. Louis, San Francisco, Tampa, Trenton, Tulsa, West Palm Beach, and Wichita. While the deals aren't quite as jaw-dropping, there are deals from many other cities available as well.