The International Air Transport Association (IATA) released data for September 2025 global passenger demand with the following highlights:

Total demand, measured in revenue passenger kilometers (RPK), was up 3.6% compared to September 2024. Total capacity, measured in available seat kilometers (ASK), was up 3.7% year-on-year. The September load factor was 83.4% (-0.1 ppt compared to September 2024).

International demand rose 5.1% compared to September 2024. Capacity was up 5.2% year-on-year, and the load factor was 83.6% (-0.1 ppt compared to September 2024).

Domestic demand increased 0.9% compared to September 2024. Capacity was up 1.1% year-on-year. The load factor was 83.0% (-0.1 ppt compared to September 2024).

Regional breakdown - International markets 

International RPK growth reached 5.1% in September year-on-year, and growth was seen in all regions. The only region to show a significant load factor improvement was Asia-Pacific.

Domestic markets

Domestic RPK rose 0.9% over September 2024 and load factor fell by 0.1 ppt to 83.0% on the back of a 1.1% capacity expansion. Brazil continues to lead the way with a double-digit expansion. By contrast, the decline in US domestic travel accelerated to -1.7% and its load factor is the weakest of the major domestic markets.