It is possible to extend a tourist, considerably, applying for an extension should be done no later than 15 days after entering the country. This process can be time-consuming and frustrating. The extension can be done from the nearest local/Main Police station and you have to give an application in writing a letter with attested, stamped from the province, copies of your passport, along with pictures and reason for your extension. You will be allowed extension within a week, and before your departure, you need to report to the same police station so that they can inform the airport authorities and when you leave Turkey it will be absolutely normal and fine.