Taking SZX domestic flights from Shenzhen to Changzhou as an example, the start time is 60 minutes before the departure time listed on the ticket, and the cut-off time is 40 minutes before the flight's scheduled departure time.
On the day of your flight, you will need to present your valid ID (the one you used when booking your ticket) and go to the airport on the day of your flight to check in for your flight (seat assignment, baggage check-in, and boarding pass).
The check-in time for domestic flights is 60 minutes prior to the departure time listed on the ticket, and the cut-off time is based on the cut-off time at the local airport. Passengers holding e-tickets for flights departing from Shenzhen with a confirmed date, time and seat can choose either self-check-in or online check-in to check in for their flight.
Self-service check-in at the airport allows passengers to enter the document number used for booking on the SZ Airways self-service check-in machine, and then follow the computer prompts to select the seat they want within the range of available seats and print out their boarding passes.
Online check-in, if the passenger's flight and check-in time meet the conditions for using the check-in procedures on the Shenzhen Airlines website, then the passenger can select the seat they want and print their boarding pass within the available seats. Upon arrival at the airport, passengers will pass through the airport security check with their printed boarding pass. If a passenger does not have a pre-printed boarding pass, he or she can follow the computer prompts to print a replacement boarding pass at SZ Air's self-service check-in facilities.
Expanded Information:
According to the Civil Aviation Administration of China (CAAC):
In order to ensure the safety of your checked baggage, suitcases need to be locked and cartons and woven bags need to be packed. Please do not carry cash, jewelry, securities, valuables, lithium batteries and other flammable and explosive items in your checked baggage.
It is recommended that you hang or stick a personal name tag on the outside of your checked luggage so that you can easily find it if there is a problem with the transportation of your luggage. Valuables, digital electronic products, fragile and perishable items, etc., are not allowed to be checked as checked baggage or clipped into the baggage.
Important Documents and Valuables:
Important documents and information, travel certificates, currencies, securities, jewelry, precious metals and their products, antiques and paintings, medical emergencies, and other items that require personal attention cannot be checked as baggage or inserted into the baggage.
Alcohol: ?
When traveling on civil aviation flights within China, alcoholic beverages are not allowed to be carried on board, but can be delivered as checked baggage. The packaging of alcoholic beverages shall conform to the relevant regulations on civil aviation transportation.
Liquid articles:
Passengers traveling on domestic flights are prohibited from carrying liquid articles with them, but they can be delivered as check-in baggage, and their packaging should comply with the relevant regulations on civil aviation transportation. You may bring along a small amount of cosmetics for your own travel use, with a limit of one item for each type of cosmetic, whose container volume shall not exceed 100 ml and shall be placed in a separate bag to be opened and inspected.
Civil Aviation of China - Baggage
Shenzhen Airlines - Flight