I’ve flown Frontier on many occasions using their promotional low low prices which they offer quite frequently. For example, this past year, I’ve flown to San Diego for $39 round-trip (with “DEN” membership), direct flights. You just CAN’T beat that!! I just carry my own food and drink into the plane. The economy seats are about the same as any others that I’ve flown in, and they have never treated me negatively in any way, so no complaints from me.