10家航司经济舱均存在锁座行为，春秋深航超半数座位被锁

Core Insights - The article discusses the prevalent practice of airlines locking certain economy class seats, which limits consumer choice and is seen as a method for airlines to increase revenue through service tier differentiation [1][2] Group 1: Airline Practices - A survey conducted by the Jiangsu Consumer Protection Committee revealed that none of the 10 major airlines fully open all economy class seats for selection, indicating that seat locking has become a common practice in civil aviation services [1] - The airlines surveyed include Eastern Airlines, Southern Airlines, Air China, Hainan Airlines, Xiamen Airlines, Shenzhen Airlines, Shandong Airlines, Sichuan Airlines, Spring Airlines, and Juneyao Airlines [1] Group 2: Seat Locking Statistics - The proportion of locked seats during the purchasing phase varies significantly among the surveyed airlines, ranging from 19.9% to 62.1%, with an average of 38.7% [1] - Specific routes with high seat locking include Spring Airlines' "Nanjing-Lanzhou" route, which has over 60% of economy seats locked, and Shenzhen Airlines' "Shenzhen-Zhanjiang" route, with over 50% locked [1] Group 3: Consumer Concerns - Consumers have raised questions regarding the reasons for seat locking, the extent of locked seats, unlocking methods, and related rules, but airline customer service responses have been vague regarding these issues [2]