What Terminal is Air Canada at MIA? Air Canada operates from Concourse J at Miami International Airport (MIA). This concourse is part of the South Terminal, offering modern facilities and streamlined services. Passengers flying with Air Canada can easily access check-in counters, security, and boarding gates. Concourse J also features a variety of dining options and retail stores to enhance the travel experience. For a smooth journey, travelers should arrive at least two hours before their flight to complete check-in and security procedures.