Frontier Airlines is an ultra low-cost, no-frills, air carrier. You get what you pay for so any extra expectation will cost. You're only allowed to bring onboard 1 small personal item for free. Their current promotion is 'Summer SALEstice" with fares to Florida starting from $49 and other cities for $59, one way.
Frontier Fare Sale [flyfrontier.com]
Valid Mondays through Fridays.
Buy by 6/22/18
Travel by 10/4/18
*Fare shown is one way for domestic, nonstop travel to/from Florida on specific dates in select markets. 7 day advance purchase required.
Seats are limited. Restrictions apply.