Big Front Seats:  Spirit Airlines Seat Selection  Airlines offers premium seats known as "Big Front Seats," which provide more space and comfort. These seats are similar to first-class seats on traditional airlines and come with additional perks. You can select Big Front Seats during the booking process or later. Fees: The cost of seat selection can vary based on factors like the route, flight duration, and specific seat category. Spirit Airlines operates on an à la carte model, where passengers can choose to pay for the services and amenities they desire.