Yes, Allegiant Air offers seat selection for a fee. Passengers can choose their seats during the booking process or after booking by logging into their reservation on the airline's website. The cost of Allegiant Air Seat Selection varies depending on the seat's location on the plane, such as window or aisle seats, and can range from a few dollars to more for seats with extra legroom or other amenities. Additionally, Allegiant Air offers a Priority Boarding option that allows passengers to board the plane early and select their seats before other passengers. To know complete information about it read the full Blog.