Can I withdraw cash from Air China's credit payment? How to change credit line into cash line A: Air China credit payment is actually one of the online products of China Airlines. Credit payment means that Alipay grants an agent a certain amount of money to advance. When an agent buys an e-ticket from an airline that cooperates with Alipay, Alipay advances the payment for the agent within this limit, and the agent pays it off within the repayment period agreed in the agreement. Then you can go to your third-party payment account first to see if the recharge is successful. If the recharge is successful, you can only withdraw money from the third-party payment account. If the recharge is unsuccessful, you can contact the bank card ownership.