Abstract: The cross-regional movement of people is increasing under the integration of Beijing, Tianjin and Hebei. By analyzing the functional orientation of the Beijing new airport in the regional development, the inter-regional air passenger travel model is constructed. And with the help of mobile phone data, the travel characteristics of the major large airports in China were combed, in order to effectively alleviate the air passenger pressure, enhance the aviation service level, and provide reference for the Beijing new airport traffic demand analysis.