I’ve flown frontier several times. I’m located close to several hubs. Sometimes you can find truly stellar rates especially if you don’t need a ton of luggage. The down side is if find a rate that seems decent you need to total it all up if you’re taking extra luggage or want a particular seat as they charge for everything. If you can find an awesome rate I’d recommend them. Comfort seems no worse than any other airline unless you have the ability to upgrade with another. I’ve only had one delay with frontier and it was only by a couple hours. Their attendants have always been kind.

BUYER BEWARE!!! This has got to be the worst airline in the world. They were originally cheaper than the others but after you calculate $149 one way per checked bag, $32 for three drinks and one snack, 5 delayed flights including one where we had to go from one side of ATL airport to the other and the absolute rude and callused disregard towards the passengers I will absolutely NEVER fly with these clowns again!! The icing on the cake was, on our return flight, since they "overbooked the flight", if your bad weighed more than 40 pounds, regardless of whether you'd already paid their "overweight" fee online, you would still have to pay an additional $180 or you could choose to ship it via UPS or FEDEX. Nearly every single person in line waiting to drop their bags were faced with the same issue and everyone was furious!!!

You're paying comparable prices either one way or other as they have very strict baggage policy and charge way too much on desk. But otherwise you get what you pay so do not expect high end services