Passenger,For KLM check-in, you have multiple options to choose from. Firstly, you can conveniently check in online via the KLM website, starting 30 hours before your flight's scheduled departure. Alternatively, if you're at the airport, you can utilize either the self-service kiosk or the check-in desks, depending on your preference and the type of flight you're on. With KLM Check-in policy, you have the freedom to select the method that suits you best and ensures a hassle-free start to your journey.For more on How do I check in on KLM? checkout the blog by Airlines Pet Policy website or contact customer service for immediate help.