Core Insights - The domestic through-flight business in China's civil aviation industry has shown remarkable growth in 2025, with 970,000 groups of flights and over 3.13 million passengers, representing year-on-year increases of 167% and 148% respectively [1] Group 1: Business Growth and Network Expansion - The domestic through-flight business continued to grow rapidly in 2025, with over 140,000 new flight registrations, including 26,300 cross-airline through-flights, marking a year-on-year increase of over 143% compared to 2024 [2] - The industry has seen a comprehensive enhancement in participation, with all 41 domestic airlines, 259 airports, and over 300 ground service units signing the "Through-Flight Service Agreement" [2] - A total of 11,107 groups of routes connecting cities without direct flights have been established, contributing to the creation of a "national civil aviation network" [2] Group 2: Airline Collaboration and Market Dynamics - A differentiated and positive development pattern has emerged, with major airlines leading and smaller airlines collaborating, enhancing the overall industry dynamics [3] - Major airlines such as China Eastern, China Southern, and Air China have collectively served 653,100 through-flight passengers, accounting for 65.31% of the total industry [3] - Hainan Airlines has integrated resources from 11 domestic passenger airlines to promote cross-airline joint transport products, with 86% of its through-flight passengers coming from cross-airline cooperation [3] Group 3: Hub Airport and Regional Connectivity - Hub airports like Beijing Daxing, Xi'an, and Urumqi have effectively utilized their route networks to gather and distribute passenger flows, ranking among the top five in terms of domestic through-flight passenger support [4] - Regional airports have leveraged the "multiplier effect" of hub airports, with Hetian Airport increasing its operational reach by 77% and serving over 80,000 through-flight passengers, a 4.1-fold increase year-on-year [4] Group 4: Standardization and Brand Development - The introduction of the "Domestic Through-Flight Service Part 1: Identification" standard has enhanced service recognition and brand building within the industry [5] - This standard has been recognized as a high-quality group standard in Beijing and is now applied across 21 airlines, 186 airports, and 6 OTA platforms, improving brand visibility throughout the passenger journey [5] Group 5: Innovative Service Models - A new service model for handling overweight luggage has been implemented to address industry pain points, allowing passengers to pay for overweight luggage fees at the departure station and ensuring seamless transfer [6][7] - The new model has been successfully trialed in Wuhan and Shijiazhuang airports, with plans for broader industry implementation expected by 2026 [7]