Air freight is calculated based on several factors, including the weight and volume of the cargo, the origin and destination of the shipment, the type of cargo, and any additional services required, such as customs clearance and insurance.

The time it takes for air freight to reach its destination depends on several factors, including the distance between the origin and destination, the availability of flights, and any delays that may occur during transit. Typically, air freight can take anywhere from a few days to a week to reach its destination.

The advantages of air freight include speed, reliability, and security. Air freight is often the fastest way to transport goods over long distances, and it offers greater security and reliability than other modes of transportation.

The disadvantages of air freight include higher costs compared to other modes of transportation, limited capacity for certain types of cargo, and the environmental impact of air travel.