American Airlines, MIA Launch $1B Concourse D Modernization ProjectAmerican Airlines and MIA will invest $1 billion to expand Concourse D, adding 17 new gates and modernizing the key international hub by 2030.Mar 2, 2026•4 min•Miami International AirportAmerican AirlinesAirport ExpansionConcourse DInfrastructureAIRPORTS