Happy Airlines has cancelled all flights in the past three days and temporarily stopped selling tickets.

Flight status data from Flight Butler shows that Happy Airlines has canceled all passenger flights from April 28th to April 30th. On OTA platforms, ticket information for Happy Airlines flights after May 1st is also temporarily unavailable. Happy Airlines has not yet officially responded to this issue. The company's official website only posted a notice stating that the function of issuing abnormal flight delay certificates on the Happy Airlines official website and WeChat official account has been temporarily suspended. The notice mentioned that the official website and WeChat official account are currently undergoing optimization and upgrade, and the system has temporarily suspended the function of issuing abnormal flight delay certificates. Passengers in need of such certificates are advised to contact customer service for assistance.