You can check in for your Turkish Airlines flight starting 24 hours before the scheduled departure time. Online check-in is available through the airline’s website or mobile app and closes 90 minutes before the flight. During online check-in, you can select your seat, add baggage if needed, and receive your boarding pass electronically. If you have checked baggage, you must drop it off at the airport baggage counter before the deadline. For domestic flights, it is recommended to arrive at least 2 hours before departure, and for international flights, at least 3 hours before, to allow time for baggage drop, security checks, and boarding. Some airports may have different check-in times or requirements, so it is important to verify the specific details for your departure location. Passengers who need special assistance, travel with infants, or fly on codeshare flights may need to check in at the airport counter. If you encounter any problems during online check-in, customer service can assist you. Turkish Airlines also offers self-service kiosks at many airports where you can check in and print boarding passes and bag tags. Checking in online early helps avoid lines and makes your airport experience smoother.