Check-in InformationEach airline has different rules for check-in and different options. Some will allow check-in online on their web site for up to 24 hours prior to departure. However, in many of those cases, you can only check-in online if you booked your airfare through the airline's own web site. Many major airlines now allow self-service check-in at kiosks at the airport, where you do not need to interact with the airline's counter staff. However, if you have baggage that needs to be checked in, then there are desk staff still available. You may see the airlines own individual web sites for more information. Click here for a list of airline web sites and phone numbers.