A substrate transferring method and a method for fabricating a flexible display by using the same are disclosed. The method for transferring a substrate includes providing a glass substrate with a recess formed thereon, aligning a flexible substrate on the glass substrate, inserting the flexible substrate in the recess of the glass substrate, and transferring the flexible substrate-inserted glass substrate for a process. The flexible substrate is insertedly fixed in the recess of the glass substrate and transferred, or a process is performed thereon, so that the transfer method is simplified and the process stability can be obtained.