1- PAY AT FINAL STEP OF BOOKING: When you finish the ticket booking, at final step, the website will automatic take you to payment page which you can pay for booking by Credit Card, Debit Card via Onepay, we accept for almost kind of Credit Card: VISA, MASTER, AMERICAN EXPRESS, JCB, ALI PAY, UNION PAY,...
2- PAY AFTER THAT: We have a separate payment page as below which you can make the payment when you finish the booking and define how much to pay by Credit Card, Debit Card via Onepay:
PAYMENT PAGE: http://cheapflightvietnam.org/en/payment-online
Or you can see when move mouse to ULTILITIES tab/Payment Online: See the photo
You just need fill some information to requirement field and pay: See the photo