With the acceleration of the process of globalization and the continuous development of international trade, air transportation, due to its high efficiency and speed, has become an indispensable part of the modern logistics system. In the actual transportation process, the calculation of freight rates is a focus for both shippers and carriers. So, how are the air transportation costs calculated? This article will provide a detailed introduction from the aspects of basic elements, calculation methods, and influencing factors.

Chapter I: Basic Composition of Air Transportation Tariffs

The air transportation costs are usually composed of the following several parts:

1. Basic Freight Charges: Determined by the transportation distance, route, and the standard freight rates set by the airline.

2. Fuel Surcharge: Due to the significant fluctuations in aviation fuel prices, airlines usually charge additional fees based on the price changes of oil.

3. Security Surcharge: Fees incurred for safety measures during the transportation process.

4. Airport Construction Fee or Cargo Handling Fee: Different airports may charge different ground service fees.

5. Other Additional Fees: Such as Peak Season Surcharge, dangerous goods surcharge, etc.

Chapter II: Determination of Charging Weight

Air freight is not charged solely based on the actual weight of the goods, but rather uses the higher of 'actual weight' and 'volume weight' as the basis for charging.

1. Actual Weight (Gross Weight): Refers to the net weight of the goods itself plus the total weight after packaging.

2. Volume Weight (Volumetric Weight): Since the space occupied by air transportation is also very important, for goods that are large in volume but light in weight, the volume weight needs to be calculated. The calculation formula is as follows:

Volume weight (kg) = \frac{length (cm) × width (cm) × height (cm)}{6000}

For example, if the dimensions of a piece of cargo are 60cm × 40cm × 30cm, then the volume weight is $ \frac{60×40×30}{6000} = 12kg $. If the actual weight is 10kg, the charge will be based on 12kg.

III. Classification of Freight Rate Grades

The air freight rates are usually classified according to the weight of the goods, with common classifications including:

- Under 45kg (N, Normal Rate)

- Over 45kg (Q, Quantity Rate)

　　 There are also multiple grades such as 100kg, 300kg, 500kg, 1000kg, etc.

　　he higher the grade, the lower the unit weight freight rate. Shippers can choose the appropriate rate based on the total volume of goods to reduce costs.

IV. Specific Freight Rate Examples

Assuming the published freight rates of an airline are:

- N (under 45kg) 8 yuan per kilogram;

　　 Q45 (over 45kg) 6 yuan per kilogram.

If the actual weight of the goods transported by the shipper is 50kg and there is no impact from volume weight, the calculation will be based on the price of Q45:

50kg × 6 yuan/kg = 300 yuan

　　If the volume weight of the goods is 60kg while the actual weight is only 40kg, the charge will be 60kg × 6 yuan = 360 yuan.

V. Factors Affecting Air Freight Rates

In addition to the above factors, the following factors will also affect the final freight cost:

- Transportation distance and routes: International routes are usually more expensive than domestic routes;

- Origin and destination: Some areas have higher costs due to infrastructure or policy restrictions;

- Transportation time: Express goods may require additional fees;

- Transportation mode: Door-to-door, airport-to-airport, chartered flights, etc., will affect the price;

- Market supply and demand: Freight rates fluctuate significantly during peak seasons or special periods (such as holidays, epidemics).

Conclusion

In summary, while the calculation of air freight rates may seem complex, its core logic revolves around 'chargeable weight' and 'rate class', and is combined with various additional fees to determine the comprehensive cost. Understanding these basic principles is not only helpful for controlling logistics costs but also for making more informed decisions when choosing service providers. With the continuous development of the logistics industry, transparent and intelligent freight rate systems will also provide customers with a better service experience.

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