Core Points - The article discusses the process of obtaining an electronic itinerary for air travel, which can be requested within 180 days after the completion of all flight segments [2][21] - It highlights the differences in obtaining electronic invoices and itineraries through various platforms, such as the Xiamen Airlines WeChat mini-program and other booking platforms like Alipay [6][19] Group 1: Electronic Itinerary Application Process - Travelers can apply for an electronic itinerary through the airline's official website, mobile app, or service hotline within 180 days after their journey [2][21] - For applications beyond 180 days, the process will follow the agreement between the traveler and the airline [2] - The article provides a step-by-step guide on how to access the "Reimbursement Certificate" section on the airline's platform [7][10] Group 2: Types of Invoices and Itineraries - Travelers can choose between an electronic itinerary and an electronic invoice, with the former being specifically for air travel [13][19] - The electronic itinerary is sent via email in OFD format, while the electronic invoice is sent in PDF format and can be printed [19][21] - It is noted that travelers can only select one type of reimbursement certificate (either electronic invoice or itinerary) for their ticket [23] Group 3: Special Considerations - The article mentions that electronic itineraries are not available for international flights and services to Hong Kong, Macau, and Taiwan [22] - For tickets purchased before September 30, 2025, paper itineraries can still be used for reimbursement [23] - The article references a policy announcement from the National Taxation Bureau and other relevant authorities regarding the promotion of digital invoices in civil aviation [24]