Atlanta still the busiest

Hartsfield-Jackson Atlanta International Airport stayed No. 1 in the world for passenger traffic in 2025, with 106.3 million travelers. (aci.aero) Airports Council International World released the preliminary 2025 rankings on April 14, 2026, and put Dubai International second at 95.2 million passengers and Tokyo Haneda third at 91.7 million. The group said global passenger traffic reached an estimated 9.8 billion in 2025, up 3.6 percent from 2024. (aci.aero) CNN, citing the same preliminary release, reported that Atlanta’s 2025 total was down 1.6 percent from 2024 and nearly 4 percent below the airport’s 2019 level. CNN also reported that Atlanta has held the top spot for 27 of the last 28 years, losing it only in 2020 during the first year of the Covid-19 collapse in air travel. (cnn.com) The ranking measures total passengers passing through an airport, not just people starting or ending trips there. Airports Council International counts passengers boarding, deplaning, and direct-transit travelers in its annual traffic dataset. (aci.aero, data.ubdc.ac.uk) That helps explain why Atlanta keeps showing up at the top. Airports Council International said four of the top 10 busiest airports in 2025 were in the United States, and those airports had domestic shares of roughly 80 percent to 95 percent. (aci.aero) Atlanta’s scale is built around hub traffic: Delta Air Lines said its summer 2025 schedule from Atlanta would reach 968 daily flights, 215 destinations, and 1.1 million weekly seats from what it called the world’s largest airline hub. (news.delta.com) The airport is also built to move large volumes quickly. Hartsfield-Jackson’s own website warns travelers to allow three hours for security during peak periods, and airport materials and runway listings show Atlanta operating five runways. (atl.com, atl.com, airnav.com) The pressure is not limited to Atlanta. Airports Council International said North American and European hubs were nearing saturation in 2025 even as Asia-Pacific airports climbed, with Shanghai Pudong rising from 10th to 5th and Guangzhou Baiyun rebounding to 9th. (aci.aero) The 2025 list shows how concentrated global air travel remains: the top 10 airports accounted for 9 percent of all passengers worldwide, even with nearly 9.8 billion passengers estimated across the entire system. Atlanta is still at the center of that map. (aci.aero)