The data forecasts a steady decline in mail ton-kilometers for trunk airlines in Japan from 22.74 million in 2024 to 12.1 million by 2028. This represents an overall drop of 46.79% over the period. The year-on-year changes indicate a consistent decrease in mail transport capacity, averaging an annual reduction of approximately 14.14% across these years.

Future trends to watch include:

Potential impacts of alternative digital communication spending and infrastructure improvements.
Economic factors influencing the demand for mail and parcel services by airlines.
If green initiatives alter the industry landscape by incentivizing more eco-friendly transport methods.