Spirit was the fucking shit. I booked a round trip cross country flight day of for $160. I knew the get down, backpack, pack light. Anyone else would have been $500+ I also got bumped into their BIG seats on one flight and it was phenomenal. I have nothing but good things to say about them which people are always surprised to hear. All the major airlines have become Spirit anyways with the whole basic economy being a thing and charging for carry-ons. Everyone nickels and dimes you, at least Spirit had a low base price. I will miss them.