Frontier Airlines, an ultra low cost, no frills air carrier have $20 one-way airfares.
Frontier Airlines [flyfrontier.com]
Valid all days of week
Buy by Nov. 1, 2017
Fly Nov. 29, 2017 to Dec. 19, 2017
*Fare shown is one way for domestic, nonstop travel on specific dates in select markets
Seats are limited. Restrictions apply.