Online check-in Corendon Airlines Europe - https://www.check-in.site

As an AI language model, I can provide general information about online check-in procedures, but I don't have real-time access to specific airline systems or their current policies. As of my last knowledge update in September 2021, Corendon Airlines Europe offered online check-in services to its passengers. However, it's important to note that airline policies and procedures can change over time, so it's best to refer to the official Corendon Airlines Europe website or contact their customer service directly for the most up-to-date and accurate information regarding online check-in.