ACI World today confirmed that close to 9.5 billion passengers passed through the world’s airports in 2024, with Hartsfield Jackson Atlanta (ATL) once again leading the way be welcoming 108 million travellers (+3.3%).

According to ACI’s figures, the Top 10 busiest airports – representing 9% of global traffic (855 million passengers) – witnessed a gain of 8.8% from 2023 and a gain of 8.4% vis-à-vis their 2019 results (789 million pax in 2019).

Hartsfield-Jackson Atlanta International Airport easily held on to its top position, followed by Dubai International Airport (DXB) and Dallas Fort Worth International Airport (DFW).

The biggest jump in the Top 10 rankings was recorded for Shanghai Pudong International Airport (PVG), which soared from 21st position in 2023 to the 10th spot in 2024.

The jump, notes ACI World, was fuelled by expanded visa policies, the resumption and expansion of international flights, operational enhancements, and the recovery of the Asia-Pacific region, particularly China.

ACI World’s director general, Justin Erbacci, said: “Amid global challenges, the resilience of the world’s busiest airports shines. These hubs are vital arteries of trade, commerce, and connectivity.

“As air travel grows, ACI World stands ready to support its members, ensuring the smooth flow of people and goods that drive global economic, social, and cultural progress.”

The yearly passenger total represents an increase of 9% from 2023 or a gain of 3.8% from pre-pandemic levels (2019).

Navigating global uncertainty

ACI World notes that 2024 saw global passenger growth face significant uncertainties that stemmed from evolving economic and geopolitical landscapes.

Ongoing supply chain challenges and production delays from aircraft manufacturers, as well as geopolitical tensions, posed a risk to growth opportunities by potentially altering flight routes, increasing operational costs, and affecting passenger sentiment.

Additionally, the threat of tariffs raised concerns about potential disruptions to global trade, which indirectly affected international travel demand and increased constructions.

It predicts that in 2025, global passenger traffic will reach 9.9 billion with a 4.8% year-over-year growth rate.ACI World states: “While passenger demand remains strong, the pace of expansion is expected to slow as markets shift from recovery-driven surges to structural, long-term growth patterns.

“Key challenges such as economic uncertainty, geopolitical tensions, and capacity constraints are expected to increasingly shape the industry’s trajectory.

“In advanced markets, demand stabilisation, supply chain bottlenecks in aircraft production and airport capacity shortage may temper growth, while in emerging markets, higher infrastructure investment and rising middle-class travel demand will likely continue to drive expansion.

“As the industry moves into a new era of growth, the airport industry must focus on financial viability, investment in infrastructure, operational efficiency, and sustainability.”