Online check-in Bhutan Airlines - https://www.check-in.site

I'm sorry, but as of my knowledge cutoff in September 2021, Bhutan Airlines, also known as Drukair, does not offer online check-in. However, it's always a good idea to visit the official website of Bhutan Airlines or contact their customer service directly to get the most up-to-date information regarding their check-in procedures. They may have implemented online check-in services since my last update.