How can I check in for my KLM flight online?

To check in for a KLM flight online, passengers can visit the official KLM website or use the KLM mobile app. Online check-in typically opens 30 hours before the scheduled departure time and closes one hour prior for intercontinental flights and 30 minutes before for European flights. When you access the check-in section on the website or app, you will need to enter your booking reference and last name to retrieve your flight information. Once your flight is located, you can select your seats, add any baggage if needed, and review your travel details. After completing the check-in process, you will receive a boarding pass, which you can either print or store on your mobile device. It is advisable to confirm any specific requirements or procedures that may apply to your flight. For updated information on check-in policies and procedures, be sure to visit the current KLM website.