How to change the ticket of Tongcheng? com？

Generally, the change rules will be informed when the ticket is issued. Support more than 30% off ticket refund and change. You can apply for a change of visa within the validity period. The validity period is generally one year. First, you can apply for a refund by calling the airline hotline to provide passenger information. Second, if you apply for changing your ticket from the agency or the agency, you can provide passenger information. You need to make up the difference and charge a handling fee of 5% to 20% of the total ticket price. According to the actual situation.