Browse the official Allegiant Airlines website.

Once you have opened the airline’s homepage, click on the “Flight” option located at the top of the webpage.

An extensive search will be discovered on your screen. You need to input your details in this section.

Firstly, you are needed to choose the type of your trip.

Secondly, make sure to enter your departure airport in the “from” field. Keep following these steps to complete the Allegiant book flight process at much ease.

In the “To” field, mention your destination airport.

Thirdly, insert the date on which you wish to depart the flight.

Now, enter the number of children, adults, infants in the lap, and infants in the seat.

Click on the “10+ travelers” if you are willing to fly in the group.

Apply a click on the “search” button and pull up the list of available flights.

This list will show all the flight options and you can pick the flight as per your preferences.