Before Qatar Airways Manage Flights, you should be known that the 24-hour flight manage booking policy won’t allow the ticket which is scheduled with the travel voucher. So you must have to pay the charge for the change. Here only you are required to visit the official website of the airline and then click on the tab of the “manage trips” from the homepage. Then you should have to fill in the reservation number and the last name. Once the page will open, you need to complete the change as per your requirement. Just after the change, you need to complete the payment in your preferable mode. And you will receive new booking details at your registered email address.