To share your Airbnb Calendar with us, just follow this simple steps:
On airbnb.com go to Host and select Calendar
Click Availability settings in your calendar view
Under Sync calendars, select Export Calendar
Copy and share your Calendar link with us.
This information is taken directly from Airbnb support. We changed point 4 to explain how to share your calendar with us.
For more information about calendar sharing, check https://www.airbnb.com/help/article/99/how-do-i-sync-my-airbnb-calendar-with-another-calendar