This paper attempts to explore the analytic structure on which the airport noise charges of different aircraft can be calculated. We collected and analyzed the current formulae applied by various airports worldwide, and then categorized them from three aspects: the charging factors, the charging methods and other modification factors. Accordingly, the existing airport noise charge methods can be classified into two models:the Linear Model and the Exponential Model. For both models, we present detailed mathematical formulations and application procedures. We also applied both models to estimate the noise charge per landing at the C.K.S. International Airport. Numerical results of our case study showed that the two models have similar outcomes' for heavy and noisy aircraft or light and quiet ones, and dissimilar outcomes for heavy but quiet aircraft or light but noisy ones. For example, a typical B747-400 would be charged NT$8,524 per landing for the Linear Model and NT$8,161 for the Exponential Model, but a B737-222 would be charged NT$2,621 for the Linear Model and NT$5,094 for the Exponential Model. In comparison to the Linear Model currently used by our country, the Exponential Model seems to have better quality in reflection of the noise impact caused by one aircraft. When the Exponential Model is applied, we suggest that the value of transformation coefficients should be set to reflect human perceptions and a time period penalty should be included in the noise index of the aircraft for each operation. To eliminate the impact of time-lag effect, we recommend the charging system with a fixed calculation formula and adjustable unit price.