The International Air Transport Association (IATA) released global passenger traffic data for September 2025, showing sustained demand growth driven by the dynamism of the international market.
Overall Growth and Strong International Performance
Total demand, measured in revenue passenger kilometers (RPK), grew 3.6% compared to September 2024. Capacity, measured in available seat kilometers (ASK), increased by 3.7%, while the global load factor remained solid at 83.4%, just 0.1 percentage points lower than the previous year.
Growth was led by the international segment, which increased by 5.1% year-on-year, with a similar capacity expansion (+5.2%) and a load factor of 83.6%. In contrast, domestic demand grew by only 0.9%, with a capacity increase of 1.1% and a load factor of 83.0%.
“The strong performance of international traffic drove 90% of September’s total growth. Airlines are preparing for a strong year-end close, despite the ongoing constraints caused by supply chain issues,” highlighted Willie Walsh, IATA’s Director General.
Regional Performance: Asia-Pacific and Middle East Lead
The report details positive growth across all regions, with Asia-Pacific and the Middle East at the forefront.
Asia-Pacific
Airlines in the region recorded a 7.4% increase in demand and a 6.1% growth in capacity, with a load factor of 83.3%, 1.0 percentage point higher than the previous year. Intra-Asian traffic, particularly between China and Japan, was the main driver of the increase, with a 9.4% rise.
Europe
European airlines reported a 4.0% increase in demand and a 4.4% increase in capacity, with a load factor of 85.6%, just 0.3 points lower than in 2024. The region maintains the highest load factor globally (86.2%).
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North America
International traffic for North American airlines grew by 2.5%, but capacity increased by 4.3%, reducing the load factor to 82.9% (-1.5 points). The North America-Asia corridor showed weak growth of 0.9%, while the North America-South America corridor recovered with a 1.1% improvement.
Middle East
Airlines in this region experienced a 6.3% increase in demand and a 6.2% increase in capacity, maintaining a stable load factor of 81.9%.
Latin America and the Caribbean
International traffic grew by 5.3%, with capacity 6.8% higher than the previous year and a load factor of 83.3%, representing a decrease of 1.2 points.
Africa
The year-on-year growth was also 5.3% in demand, with a capacity expansion of 5.1% and a load factor of 74.7%, 0.1 points above the same month in 2024.
Domestic Markets: Brazil Stands Out, US Declines
In domestic markets, traffic increased by 0.9%, with a slight decrease in the load factor (-0.1 points) due to a capacity expansion of 1.1%.
Brazil again led the way with double-digit growth, consolidating its position as the most dynamic domestic market. In contrast, the US market deepened its decline with a 1.7% contraction and recorded the weakest load factor among the major domestic markets.
Outlook for the End of 2025
Airlines are approaching the last quarter of the year with moderate optimism. Flight schedules for November point to a 3% expansion compared to the same period last year. Although supply chain problems continue to affect operational capacity, load factors remain robust, reflecting sustained demand in global air transport.
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