Besides the normal check-in service at the desks, many airlines offer you the possibility of checking in over the web or the night before. All the information on check-in and baggage regulations plus further information about the individual airlines is available here:
Report for departure the easy way, with your seat “in the bag” as it were – thanks to the online check-in.
Web & Mobile Check -in
Many airlines offer you the opportunity to check in for your flight the night before, so you arrive for your flight in comfort without baggage and with a seat reservation.