Frontier is a budget airline, after all, so expect extra fees beyond your ticket price for any comfort items or upgrades. You get to bring only a personal item for free - a carry-on will cost between $39 and $60 (depending on whether you pay for the bag during booking or at the gate). Frontier [[Airlines fares are typically cheaper thanks to lower travel demand on these days](https://listen.tidal.com/playlist/cacb87b7-c584-479e-bc4d-c7b21eff0a7c)](https://listen.tidal.com/playlist/cacb87b7-c584-479e-bc4d-c7b21eff0a7c). On the other hand, Fridays and Sundays are considered peak travel times . with higher ticket prices. No, bags do not fly free on Frontier Airlines, except for a small personal item. The cost of carry-on and checked bags depends on the flight, the weight of the bag, and when the baggage allowance is purchased. In North America, the cheapest airlines include [Frontier Airlines, Spirit Airlines, Hawaiian Airlines, Allegiant Airlines, Delta Airlines, Alaska Airlines, American Airlines, JetBlue Airways, Southwest Airlines, and United Airlines](https://listen.tidal.com/playlist/cacb87b7-c584-479e-bc4d-c7b21eff0a7c).