Turkish Airlines offers online check-in starting 24 hours and closing 90 minutes before departure. Passengers can check in via the website or mobile app by entering their reservation code and surname. Online check-in allows seat selection, adding baggage, and obtaining a boarding pass digitally or for printing. Passengers with checked luggage must drop bags at the airport counters after online check-in. For those who prefer, self-service kiosks are available from 12 hours before departure until 45 minutes before domestic flights and 60 minutes before international flights. Airport counters open early and close 45 minutes before domestic flights and 60 minutes before international flights. Business Class passengers have access to dedicated check-in counters for faster service. It is recommended to arrive at least 2 hours before domestic flights and 3 hours before international flights to allow time for security and boarding. Choosing online or kiosk check-in saves time and avoids queues. Passengers requiring special assistance or traveling with unaccompanied minors should check in at the airport counters. Completing check-in within the given timelines ensures smooth boarding and compliance with airline policies.