Is the information of flight delay notice on mobile phone safe?

It may be fake. In general, don't click on this message until you receive it. Call the airport first to find out, because there are a lot of similar virus messages now, and once they are clicked, there will be some losses. You can check it with the software that comes with your mobile phone, or download some antivirus software, such as Tencent Mobile Manager. These softwares have good protection functions and can intercept these virus softwares well. You can try.