In order to board your booked flight, check in at the desk of  your airline. We recommend that you gather information in advance from your airline or travel agent concerning the time of the official check-in close. Incidentally, should your flight be very early in the morning, some airlines will already allow check-in on the preceding evening. 

In order to check-in, you will require an official identity card or a valid passport, and if required by your country of destination, a visa. Naturally, you also need your flight ticket. Following the hand-over of your entire luggage, except for your hand luggage, you will receive a boarding card. This shows the number of your seat reservation, and in general the gate number, to which you will subsequently proceed.