Frontier Airlines: Select One-Way Flights . As low as $20

Through January 23rd, Frontier Airlines is offering select one-way flights for $20!
Flights must be purchased at least seven days in advance and flights must take place before March 6th, 2019 or June 12th, 2019 (depending on your destination) with the exception of the following blackout dates: February 16th and February 23rd as well as April 23rd and May 28th.
Note that blackout dates are contingent upon when you travel.