SunExpress allows its passengers to perform web check-in for flights, both domestic and international. Generally, passengers may complete the online check from 24 hours up to 1 hour before the flight leaves. Web check-in can be performed for most airports and all flights within Turkey on FlySunExpress.com. SunExpress passengers need to insert the letter code and reservation number of the flight to accomplish web check-in. Later, the passenger can print the boarding pass and go to the departure gate. Furthermore, SunExpress has a mobile application through which passengers can check-in and receive their electronic boarding pass, as well as benefit from discounts and promotions, and special and exclusive offers. Further information on check-in and other services can be found on the SunExpress website and through their hotline.