What Terminal is Air Canada at ATL? At Hartsfield-Jackson Atlanta International Airport (ATL), Air Canada is based out of Terminal I (International Terminal). All international arrivals and departures are handled by this terminal, which offers a variety of services to travelers, including facilities for customs and immigration. In addition, passengers using Air Canada have access to lounges, duty-free stores, and dining establishments. Passengers may easily navigate the airport's broad network of international destinations or connect to domestic flights thanks to the terminal's convenient location and architecture.