I use Allegiant for flights to St. Petersburg on a regular basis. Only had one delay in 4 years due to a flooding toliet. Remember that you are charged a fee for everything: Seat selection, baggage, food and drink, etc. This past weekend when I flew on them to Vegas, they made everyone get their carry ons tagged with a sticker at the ticket counter. Even if you had only a carry on, you still had to stand in line. Apparently, they have had problems with the size and amounts of carry ons.