The check-in desks open approximately 2,5 to 3,5 hours before departure and you have to have checked in at the latest one hour before departure. You can even check in 23 hours before departure if you are checking in at Self-service Check-in, provided the airport Baggage-drop desk is open. When you have checked in, you leave your baggage at the Baggage-drop desk. You also show your ID papers at the Baggage-drop. It is a good idea to allow yourself plenty of time. What am I allowed to take along in my hand baggage?