As of 2026, Dubai International Airport (DXB) has solidified its position as the busiest airport in the world for international passenger traffic, handling a record-breaking 95.2 million passengers in 2025. This hub serves as the primary gateway for Emirates Airline and connects over 250 destinations globally. While DXB leads in international traffic, Hartsfield-Jackson Atlanta International Airport (ATL) often holds the title for the busiest airport overall in terms of total movements (take-offs and landings) and total passengers (international plus domestic), frequently exceeding 100 million travelers annually due to its role as a massive domestic hub for Delta Air Lines. Other contenders in the "busiest" category include London Heathrow, which is the most congested for two-runway operations, and Tokyo Haneda, which sees immense domestic volume. The choice of the "busiest" depends on the metric: Dubai is the king of international travel, while Atlanta remains the powerhouse for total passenger volume and logistics in the United States.