Can I change my ticket from Eastern Airlines to Tibet Airlines?

Tickets have been issued: if you book a discounted ticket, you can only change the time on the same airline if the change conditions permit; If you book a full-price ticket, you can change the time, but the change must be an agreement between the two airlines; For tickets with lower discounts, it may be that airline restrictions cannot be changed;

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 needs to be refunded or changed, it needs to be implemented according to the regulations of each airline, and the corresponding refund or change fee may be charged.