It happens almost every year, and this year is no exception: A low fare carrier offers an all you can fly pass. 

This year, Frontier has returned with its "go wild" pass. On the surface it seems like a great deal – for about $250, it offers nearly unlimited flights for just one penny per flight throughout its entire system until February 2027. 

So what's the catch? it's the total cost, and of course, the restrictions. You still have to pay taxes on the flight, you still have to pay for checked bags, and advance seat assignments aren’t easy – plus they will cost you as well.