What kind of analysis helps forecast changes in seat miles during air service development?

The correct choice focuses on financial sensitivity analysis as it directly relates to forecasting changes in seat miles during air service development. This type of analysis evaluates how varying financial scenarios can impact operational elements, including seat capacity and demand management in the airline industry. By assessing the potential changes in revenue, costs, and ultimately profitability associated with different levels of operational output, such as the number of flights and available seats, stakeholders can make informed decisions about service development.

This approach allows airport planners and airline decision-makers to simulate potential market conditions and their effects on business performance, thus forecasting changes in seat miles effectively. The results can indicate how shifts in financial variables influence service offerings, assisting in strategic planning and resource allocation for air service development initiatives.