Tickets have been issued: if you are booking discount tickets, you can change the time only in the same airline through the agent website customer service (purchasing tickets on the agent website) or the airline official website (purchasing tickets on the airline official website) if the conditions for change or refund permit; If you book a full-price ticket, you can change the time, but the change must be an agreement between the two airlines; Tickets with lower discounts cannot be changed or refunded due to airline restrictions;
In addition, there is no charge for canceling or modifying orders that have not been issued (except for team tickets that have paid the deposit); When the issued order requires refund or change, it should be implemented in accordance with the regulations of each airline, and the corresponding refund or change fee may be charged.