I booked a flight at Air China official website, and the flight was delayed. Should I refund the ticket or leave it alone?

General airlines will inform you of flight delays by SMS. The reason why the information you saw in official website has not changed is that the air mail system has not been updated in time. If you make a successful reservation in official website, you can definitely get a ticket by getting your ID card at the airport or the counter directly under Air China. The printed travel itinerary will be based on the record and printing time of the airmail system. (Look at the picture, just print TK 1. Originally scheduled for 28th 14: 15, the flight was later changed, and it didn't take off until 4 o'clock on 29th. If you want to refund your ticket, you can apply for a full refund. If you don't want to refund your ticket, you can contact the airline to change it, and the change operation is free. Yunnan Nanfeng Aviation Tourism Information Center will answer your questions.