Which of the following factors does NOT influence package delivery times?

The factor that does not influence package delivery times is the type of packaging. While the materials and design of packaging may impact the safety and integrity of the contents during transit, they do not typically affect the actual speed at which a package is delivered. Delivery times are primarily determined by logistical considerations such as the distance the package needs to travel, external factors like weather conditions, and the volume of mail being processed, especially during peak seasons.

In contrast, distance determines how far the package has to go, weather can cause delays due to hazardous conditions, and increased volume during busy periods can slow down processing and delivery times. Packaging itself, while important for protection and compliance with shipping standards, does not inherently have an effect on how quickly a package can be delivered to its destination.