+1-844-238-2070 Allegiant Air ATL Terminal

Allegiant Air operates from the South Terminal (Domestic Terminal – Concourse T) at Hartsfield-Jackson Atlanta International Airport (ATL). The South Terminal is dedicated to domestic airlines and is one of the two main entry points for check-in and baggage claim at ATL, the other being the North Terminal.

Passengers flying with Allegiant Air should proceed to the South Terminal for ticketing, check-in, and baggage drop-off. After clearing security, they can access Concourse T, where most Allegiant flights are typically boarded. Hartsfield-Jackson is one of the busiest airports in the world, so arriving at least 2 hours before departure is recommended, especially for check-in and TSA screening.

Concourse T offers a variety of amenities, including restaurants, shops, charging stations, and lounges. Allegiant is a low-cost carrier, so passengers should expect à la carte pricing for baggage, seat selection, and onboard services.

To ensure accurate and up-to-date information about your gate, terminal changes, or any schedule adjustments, it’s best to check the Allegiant Air mobile app, official website, or the ATL airport flight information displays on the day of travel.